NXP KW0x Reference guide

Document Number: MKW01xxRM

Rev. 3

04/2016

MKW01Z128

Sub 1 GHz Low Power Transceiver plus Microcontroller

Reference Manual

MKW01xxRM Reference Manual, Rev. 3, 04/2016

Freescale Semiconductor, Inc. iii

Audience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

Chapter 1

MKW01Z128 Introduction and Chip Configuration

1.1 KW01 family introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.2 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.3 General platform features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.4 MCU features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.5 RF transceiver features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1.6 Software solutions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1.7 System overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1.7.1 Transceiver overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1.7.2 MCU overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1.7.2.1 Module functional categories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1.7.2.2 ARM Cortex-M0 core modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

1.7.2.3 System modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

1.7.2.4 Memories and memory interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

1.7.2.5 Clock modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

1.7.2.6 Security and integrity module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

1.7.2.7 Analog modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

1.7.2.8 Timer modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

1.7.2.9 Radio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

1.7.2.10 Communication interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

1.7.2.11 Human-machine interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

1.7.2.12 System Device Identification Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

Chapter 2

MKW01Z128 Pins and Connections

2.1 Device pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2 Pin definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.3 Internal Functional Interconnects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Chapter 3 Signal Multiplexing and Signal Descriptions

3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2 Signal Multiplexing Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2.1 Port control and interrupt module features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2.2 Clock gating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3.2.3 Signal multiplexing contraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3.3 Pin Assignments and Signal Multiplexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

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Chapter 4

System Considerations

4.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2 Power connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.3 System functional interconnects. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4.3.1 In-package Connections (SPI Channel and Status) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4.3.2 System Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.3.2.1 MCU Reset pin (pin 33) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.3.2.2 Transceiver Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.3.2.3 MCU Control of Transceiver Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

4.3.3 External Clock Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

4.4 System Clock Sources and Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

4.4.1 Additional Transceiver Status Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

4.4.2 Transceiver Oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

4.4.2.1 Crystal Resonator Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

4.4.2.2 Transceiver ClkOut Output (DIO5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

4.4.3 MCU Clock Sources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

4.4.3.1 MCU External Clock Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

4.4.3.2 MCU External Crystal Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

4.4.3.3 MCU Internal Clock Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

4.4.3.4 LPO 1 kHz Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

4.4.4 System Clock Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

4.4.4.1 Single crystal with ClkOut driving MCU EXTAL input . . . . . . . . . . . . . . . . . . . . . . . 4-12

4.4.4.2 Single Crystal with MCU Using Internal Clock Only . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

4.4.4.3 Dual Crystal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

4.4.5 Debug Port Pin Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

4.5 MKW01Z128 GPIO (Mixed I/O from Transceiver and MCU) . . . . . . . . . . . . . . . . . . . . . . . . 4-13

4.5.1 MCU GPIO Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

4.5.2 Transceiver DIOX Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

4.6 Transceiver RF Configurations and External Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

4.6.1 RF Interface Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

4.6.2 Standard Output Power RF Configuration (Single, Bidirectional Port). . . . . . . . . . . . . . . 4-15

4.6.3 Higher Output Power RF Configuration (Dual Port with Optional External Power Amplifier)

4-16

4.6.4 Filter and Matching Network Component Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17

Chapter 5

Sub 1 GHz Transceiver Architecture Description

5.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2 Simplified Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.3 Transceiver Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.4 Low Battery Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.5 Frequency Synthesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5.5.1 Reference Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

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5.5.2 CLKOUT Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5.5.3 PLL Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

5.5.3.1 VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

5.5.3.2 PLL Bandwidth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

5.5.3.3 Carrier Frequency and Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

5.5.4 Lock Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

5.5.5 Lock Detect Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

5.6 Transmitter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

5.6.1 Bit Rate Setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

5.6.2 FSK Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

5.6.3 OOK Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

5.6.4 Modulation Shaping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

5.6.5 Power Amplifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

5.6.6 Over Current Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

5.7 Receiver Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

5.7.1 LNA - Single to Differential Buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

5.7.2 Automatic Gain Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

5.7.2.1 RssiThreshold Setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

5.7.2.2 AGC Reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

5.7.3 Continuous-Time DAGC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

5.7.4 Quadrature Mixer - ADCs - Decimators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

5.7.5 Channel Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

5.7.6 DC Cancellation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

5.7.7 Complex Filter - OOK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

5.7.8 RSSI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

5.7.9 Cordic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

5.7.10 FSK Demodulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

5.7.11 OOK Demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

5.7.11.1 Optimizing the Floor Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

5.7.11.2 Optimizing OOK Demodulator for Fast Fading Signals . . . . . . . . . . . . . . . . . . . . . . . 5-19

5.7.11.3 Alternative OOK Demodulator Threshold Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19

5.7.12 Bit Synchronizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19

5.7.13 Frequency Error Indicator (FEI). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

5.7.14 Automatic Frequency Correction (AFC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22

5.7.15 Optimized Setup for Low Modulation Index Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22

5.7.16 Temperature Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23

5.7.17 Timeout Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

5.8 High Bit Rate Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

5.8.1 500 kbps Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

5.8.2 600 kbps Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

Chapter 6

Transceiver Operating Modes

6.1 Basic Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

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6.2 Automatic Sequencer and Wake-Up Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.2.1 Transmitter Startup Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6.2.2 TX Start Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6.2.3 Receiver Startup Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6.2.4 RX Start Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

6.2.5 Optimized Frequency Hopping Sequences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

6.3 Listen Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

6.3.1 Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

6.3.2 Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

6.3.3 End of Cycle Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

6.3.4 RC Timer Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

6.4 AutoModes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

Chapter 7

Transceiver Digital Control and Communications

7.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.1.1 Data Operation Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.2 Control Block Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7.2.1 SPI Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7.2.2 FIFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

7.2.2.1 Overview and Shift Register (SR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

7.2.2.2 Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

7.2.2.3 Interrupt Sources and Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

7.2.2.4 FIFO Clearing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

7.2.3 Sync Word Recognition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

7.2.3.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

7.2.3.2 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

7.2.4 Packet Handler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

7.2.5 Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

7.3 Digital IO Pins Mapping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

7.3.1 DIO Pins Mapping in Continuous Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

7.3.2 DIO Pins Mapping in Packet Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

7.4 Continuous Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

7.4.1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

7.4.2 TX Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

7.4.3 RX Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

7.5 Packet Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

7.5.1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

7.5.2 Packet Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

7.5.2.1 Fixed Length Packet Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

7.5.2.2 Variable Length Packet Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11

7.5.2.3 Unlimited Length Packet Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12

7.5.3 TX Processing (without AES) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12

7.5.4 RX Processing (without AES) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13

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7.5.5 AES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14

7.5.5.1 TX Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14

7.5.5.2 RX Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14

7.5.6 Handling Large Packets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15

7.5.7 Packet Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15

7.5.7.1 Sync Word Based . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15

7.5.7.2 Address Based. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16

7.5.7.3 Length Based . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16

7.5.7.4 CRC Based . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16

7.5.8 DC-Free Data Mechanisms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17

7.5.8.1 Manchester Encoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17

7.5.8.2 Data Whitening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18

7.6 Register Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18

7.7 Common Configuration Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21

7.8 Transmitter Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-25

7.9 Receiver Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26

7.10 IRQ and Pin Mapping Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29

7.11 Packet Engine Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-32

7.12 Temperature Sensor Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36

7.13 Test Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36

Chapter 8

MKW01Z128 Transceiver - MCU SPI Interface

8.1 SiP Level SPI Pin Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.2 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

8.3 SPI System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

8.3.1 SPI Signal Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

8.3.1.1 Slave Select (SS or NSS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

8.3.1.2 SPI Clock (SCK or SPSCK). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

8.3.1.3 Master Out / Slave In (MOSI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

8.3.1.4 Master In / Slave Out (MISO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

8.3.2 MKW0xxx SPI Transaction Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

8.3.3 MKW0xxx SPI Transaction Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

Appendix A

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Contents

About This Book

This manual details the MKW01, which is a highly-integrated, cost-effective, system-in-package (SIP),

sub-1 GHz wireless node solution with an FSK, GFSK, MSK, or OOK modulation-capable transceiver and

low-power Kinetis microcontroller. The highly integrated RF transceiver operates over a wide frequency

range including 315 MHz, 433 MHz, 470 MHz, 868 MHz, 915 MHz, 928 MHz, and 955 MHz in the

license-free Industrial, Scientific and Medical (ISM) frequency bands.

Audience

This manual is intended for system designers.

Revision History

The following table summarizes revisions to this document since the previous release (Rev 2.0).

Revision History

Location Revision

Chapter 1 • Corrected the package name from 56 LGA to 60-pin LGA

• Added the following paragraph in Section 1.7.1, “Transceiver overview

“The versatile RF Transceiver in the MKW01 can be configured to be compliant with

the relevant sections of numerous world-wide standards, including but not limited to:

ARIB-T108 and T67, FCC 15.231, 15.247 and 15.249, 802.15.4g, EN54-25 and ETSI

300 220.”

Chapter 2 • Updated Figure 2-1. MKW01Z128 pinout

• Updated Table 2-1. Pin Function Description

• Updated description of pin # 58 in Table 2-2 MKW01Z128 Internal Functional

Interconnects.

Chapter 3 • Updated Table 3-2 Reset State of PORTx_PCRn Register Bit Fields.

• Updated Table 3-3 MKW01 Pin Assignments and Signal Multiplexing.

Chapter 4 • Added a note related to CLKOUT in Idle mode to Section 4.3.3, “External Clock

Connections.

Chapter 5 • Added a note to Section 5.5.5, “Lock Detect Indicator.

• Added a figure to show Pout vs. Programmed Power to Section 5.6.5, “Power

Amplifiers.

• Updated the following sentence in Section 5.7.3, “Continuous-Time DAGC from

“The DAGC is enabled by setting RegTestDagc to 0x10“ to “The DAGC is enabled by

setting RegTestDagc to 0x20“.

• Added Table 5-6. Available DCC Cutoff Frequencies Expressed as Percentage of

RXBW (continued) to Section 5.7.6, “DC Cancellation.

• Added RSSI chart and the notes following the figure to Section 5.7.8, “RSSI.

Chapter 6 • Added a note related to CLKOUT in Idle mode to Section 6.3, “Listen Mode.

Chapter 7 • Updated Reset value of RegVersion (at address 0x10) from 0x22 to 0x 23 in Table 7-4.

Registers Summary. Also added a line for register RegTestTcxo at address 0x59.

• Added a line for register RegTestTcxo at address 0x59 in Table 7-11 Test Registers.

Also updated description of RegTestDagc (0x6F) register.

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Definitions, Acronyms, and Abbreviations

The following list defines the acronyms and abbreviations used in this document.

ACK Acknowledgement Frame

API Application Programming Interface

BB Baseband

CCA Clear Channel Assessment

CRC Cyclical Redundancy Check

DCD Differential Chip Decoding

DME Device Management Entity

FCS Frame Check Sequence

FFD Full Function Device

FFD-C Full Function Device Coordinator

FLI Frame Length Indicator

GTS Guaranteed Time Slot

HW Hardware

IRQ Interrupt Request

ISR Interrupt Service Routine

LO Local Oscillator

MAC Medium Access Control

MCPS MAC Common Part Sublayer

MCU Microcontroller Unit

MLME MAC Sublayer Management Entity

MSDU MAC Service Data Unit

NWK Network

PA Power Amplifier

PAN Personal Area Network

PANID PAN Identification

PHY PHYsical Layer

PIB PAN Information Base

PPDU PHY Protocol Data Unit

PSDU PHY Service Data Unit

RF Radio Frequency

RFD Reduced Function Device

SAP Service Access Point

SFD Start of Frame Delimiter

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SPI Serial Peripheral Interface

SSCS Service Specific Convergence Layer

SW Software

VCO Voltage Controlled Oscillator

References

The following sources were referenced to produce this book:

[1] IEEE 802.15.4 Standard

[2] Freescale

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Chapter 1

MKW01Z128 Introduction and Chip Configuration

Kinetis is the most scalable portfolio of low power, mixed-signal ARM®Cortex™ MCUs in the industry.

Kinetis MCU families are peripheral- and software-compatible devices. Each family offers excellent

performance, memory and feature scalability with common peripherals, memory maps, and packages

providing easy migration both within and between families.

Kinetis MCUs are built from Freescale’s innovative 90 nm thin film storage (TFS) flash technology with

unique FlexMemory. Kinetis MCU families combine the latest low-power innovations and high

performance, high precision mixed-signal capability with a broad range of connectivity, human-machine

interface, and safety & security peripherals.Kinetis MCUs are supported by a market-leading enablement

bundle from Freescale and numerous ARM 3rd party ecosystem partners.

Kinetis W-series devices all contain wireless connectivity options spanning across frequency bands and

standards.

KW01 devices also have these features:

•Core:

— ARM Cortex-M0+ Cores delivering single-cycle access memories, 48 MHz CPU frequency

— Up to 16-channel DMA for peripheral and memory servicing with minimal CPU intervention

— Broad range of performance levels rated at maximum CPU frequencies starting at 48 MHz

• Ultra-low power:

— Multiple low power operating modes for optimizing peripheral activity and wakeup times for

extended battery life.

— Low–leakage wakeup unit, low power timer, and low power RTC for additional low power

flexibility

— Industry-leading fast wakeup times

• Memory: 16 KB RAM, 128 KB flash

• Mixed-signal analog:

Table 1-1. Kinetis W-Series devices

Family Frequency Band

KW0x Sub-Gigahertz

KW2x 2.4 GHz

KW3x Reserved

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— Fast, high precision 16-bit ADCs, 12-bit DACs, high speed comparators and an internal voltage

reference. Powerful signal conditioning, conversion and analysis capability with reduced

system cost

• Human Machine Interface (HMI):

— Capacitive Touch Sensing Interface with full low-power support and minimal current adder

when enabled

• Connectivity and Communications:

— UARTs with ISO7816, CEA709.1-B (LON), and IrDA support, I2C, and DSPI

• Reliability, Safety and Security:

— Hardware cyclic redundancy check engine for validating memory contents/ communication

data and increased system reliability

— Independent-clocked computer operating properly (COP) for protection against code runaway

in fail-safe applications

— External watchdog monitor

• Timing and Control:

— Programmable Interrupt Timer for RTOS task scheduler time base or trigger source for ADC

conversion and programmable delay block

•System:

— Wide operating voltage range from 1.8 V to 3.6 V with flash programmable down to 1.8 V with

fully functional flash and analog peripherals

— Ambient operating temperature ranges from –40°C to 85°C

1.1 KW01 family introduction

The KW01 family is the entry point into the Kinetis W-Series portfolio. The K01W is a single-chip

solution combining an ARM Cortex-M0+ microcontroller and a sub-GHz ISM band radio front-end

device.

Devices contain 128 KB of flash and 16 KB of SRAM in an 8 x 8 mm 60-pin LGA package. Standard

features include a rich suite of analog, communication, timing and control peripherals. Additionally,

flexible low-power capabilities and innovative FlexMemory help to solve many of the major pain points

for system implementation.

1.2 Ordering information

Table 1-2 lists the available devices in the MKW01 family.

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1.3 General platform features

• ARM Cortex-M0+ Core

• Sub-1 GHz in-package transceiver

• Multiple power saving modes

• 1.8 V to 3.6 V operating voltage with on-chip voltage regulators

• –40°C to +85°C temperature range

• Low external component count

• Supports single crystal (32 MHz typical) clock source operation or dual crystal operation

• Versatile software solutions

• 60-pin LGA (8x8 mm) Package

1.4 MCU features

•Core:

— ARM Cortex-M0+ 1.77 CoreMark/MHz from single-cycle access memories, 48 MHz CPU

frequency

— 4-channel DMA for peripheral and memory servicing with minimal CPU intervention

— CPU frequencies up to 48 MHz

• Ultra-low power:

— Multiple low power operating modes for optimizing peripheral activity and wakeup times for

extended battery life.

— Low–leakage wakeup unit and low power timer for time keeping function

— Industry-leading fast wakeup times

• Memory:

— 128 KB Flash, 16 KB RAM

• Mixed-signal analog:

— Fast, high precision 16-bit ADCs, and internal high speed comparators. Powerful signal

conditioning, conversion and analysis capability with reduced system cost

• Human Machine Interface (HMI):

— Capacitive Touch Sensing Interface with full low-power support and minimal current adder

when enabled

Table 1-2. Devices in the MKW01 Family

Device

Operating Temp

Range (TA.)

Package Memory Options Description

MKW01Z128CHN –40° to 85° C 60 LGA 16 KB RAM,

128 KB flash

The primary target market is communications for

last mile metering, sub metering and associated

devices such as concentrators. The feature set

will also allow it to serve for wireless sensor

networks in building control and automation.

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• Connectivity and Communications:

— Three UARTs, two SPIs, and two I

2

C

• Reliability, Safety and Security:

— Hardware cyclic redundancy check engine for validating memory contents/ communication

data and increased system reliability

— Independent-clocked computer operating properly (COP) for protection against code runaway

in fail-safe applications

• Timing and Control:

— Powerful timer modules that support general-purpose, PWM, and motor control functions

— Programmable Interrupt Timer for RTOS task scheduler time base or trigger source for ADC

conversion and programmable delay block

•System:

— Wide operating voltage range from 1.8 V to 3.6 V with flash programmable down to 1.8 V with

fully functional flash and analog peripherals

— Ambient operating temperature ranges from –40°C to 85°C

1.5 RF transceiver features

• High Sensitivity: down to –120 dBm at 1.2 kbps

• High Selectivity: 16-tap FIR Channel Filter

• Bullet-proof front end: IIP3 = –18 dBm, IIP2 = +35 dBm, 80 dB Blocking Immunity, no Image

Frequency response

• Low current: RX = 16 mA, 100 nA register retention

• Programmable Pout : –18 to +17 dBm in 1 dB steps

• Constant RF performance over voltage range of chip

• FSK bit rates up to 600 kbps

• Fully integrated synthesizer with a resolution of 61 Hz

• FSK, GFSK, MSK, GMSK and OOK modulations

• Built-in Bit Synchronizer performing Clock recovery

• Incoming Sync Word Recognition

• Automatic RF Sense with ultra-fast AFC

• Packet engine with CRC, AES-128 encryption and 66-byte FIFO

• Built-in temperature sensor and Low battery indicator

• 32 MHz (typical) crystal oscillator clock source

1.6 Software solutions

Freescale will support the MKW01Z128 platform with several software solutions:

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• A radio utility GUI will be available that allows testing of various features and setting registers. A

firmware-based connectivity test will allow a limited set of testing controlled with a terminal

emulator on any computer.

• SMAC (Simple Media Access Controller) — This codebase provides simple communication and

test apps based on drivers/PHY utilities available as source code. This environment is useful for

hardware and RF debug, hardware standards certification, and developing proprietary applications.

• MAC/PHY (Media Access Control/Physical) for IEEE 802.15.4g/e — This release was developed

primarily for the ZigBee Alliance specified Home Energy Management Systems for the Japanese

application space.

• Additional software will be available through 3rd party providers.

1.7 System overview

Figure 1-1 shows a simplified block diagram of the MKW01.

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Figure 1-1. MKW01 system level block diagram

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1.7.1 Transceiver overview

The transceiver (see Figure 1-1) is a single-chip integrated circuit ideally suited for today's high

performance ISM band RF applications. Its advanced features set, including state of the art packet engine,

greatly simplifies system design while the high level of integration reduces the external RF component bill

of material (BOM) to a handful of passive de-coupling and matching components. It is intended for use as

a high-performance, low-cost FSK and OOK RF transceiver for robust, frequency agile, half-duplex

bidirectional RF links.

The MKW01 is intended for applications over a wide frequency range, including the 433 MHz and

868 MHz European and the 902–928 MHz North American and Japan ISM bands. Coupled with a link

budget in excess of 135 dB, the transceiver advanced system features include a 66 byte TX/RX FIFO,

configurable automatic packet handler, listen mode, temperature sensor and configurable DIOs which

greatly enhance system flexibility while at the same time significantly reducing MCU requirements. The

transceiver complies with both ETSI and FCC regulatory requirements.

The major RF communication parameters of the MKW01 transceiver are programmable and most can be

dynamically set. This feature offers the unique advantage of programmable narrow-band and wide-band

communication modes without the need to modify external components. The transceiver is also optimized

for low power consumption while offering high RF output power and channelized operation.

The versatile RF Transceiver in the MKW01 can be configured to be compliant with the relevant sections

of numerous world-wide standards, including but not limited to: FCC Part 15.247 and Part 15.249, ETSI

EN 300 220, ARIB STD-T108, IC RSS 210.

1.7.2 MCU overview

The in-package Kinetis L series 48 MHz MCU features an ARM Cortex M0+, 16 KB Ram and 128 KB

flash. The RF transceiver is controlled through the MCU SPI port which is dedicated to the RF device

interface. Two of the transceiver status IO lines are also directly connected to the MCU GPIO to monitor

the transceiver operation. In addition, the transceiver reset and additional status can be connected to the

MCU through external connections.

1.7.2.1 Module functional categories

The modules on this device are grouped into functional categories. The following sections describe the

modules assigned to each category in more detail.

MKW01Z128 Introduction and Chip Configuration

MKW01xxRM Reference Manual, Rev. 3, 04/2016

1-8 Freescale Semiconductor, Inc.

1.7.2.2 ARM Cortex-M0 core modules

The following core modules are available on this device.

Table 1-3. Module functional categories

Module category Description

ARM Cortex-M0+ core

System • System integration module

• Power management and mode controllers — Multiple power modes available based on

run, wait, stop, and powerdown modes

• Low-leakage wakeup unit

• Miscellaneous control module

• Crossbar switch

• Peripheral bridge

• Direct memory access (DMA) controller with multiplexer to increase available DMA

requests

• External watchdog monitor

• Watchdog

Memories Internal memories include:

• Up to 128KB program flash memory

• Up to 16KB SRAM

Clocks • Multiple clock generation options available from internally- and externally-generated

clocks

• System oscillator from transceiver to provide clock source for the MCU

• 32 kHz RTC oscillator

Security • Cyclic Redundancy Check module for error detection

Analog • 16-bit analog-to-digital converter

• Internal Comparator with internal 6-bit DAC for reference

• 12-bit DAC with DMA support and two 16-bit buffers

Timers • Low Power Timer/PWM (TPM) modules

• One 6-channel TPM

• Two 2-channel TPMs

• 2-channel periodic interrupt timer

• Real-time clock

• Low-power timer

• System tick timer

Communications • 2x internal serial peripheral interface

• 2x inter-integrated circuit (I

2

C)

•3x UART

Human-Machine Interfaces (HMI) • General purpose input/output controller

• Capacitive touch sense input interface enabled in hardware

MKW01Z128 Introduction and Chip Configuration

MKW01xxRM Reference Manual, Rev. 3, 04/2016

Freescale Semiconductor, Inc. 1-9

1.7.2.3 System modules

The following system modules are available on this device.

Table 1-4. Core modules

Module Description

ARM Cortex-M0+ The ARM Cortex-M0+ is the newest member of the Cortex M Series of processors

targeting microcontroller applications focused on very cost sensitive, deterministic,

interrupt driven environments. The Cortex M0+ processor is based on the ARMv6

Architecture and Thumb®-2 ISA and is 100% instruction set compatible with its

predecessor, the Cortex-M0 core, and upward compatible to Cortex-M3 and M4 cores.

NVIC The ARMv6-M exception model and nested-vectored interrupt controller (NVIC) implement

a relocatable vector table supporting many external interrupts, a single non-maskable

interrupt (NMI), and priority levels.

The NVIC replaces shadow registers with equivalent system and simplified

programmability. The NVIC contains the address of the function to execute for a particular

handler. The address is fetched via the instruction port allowing parallel register stacking

and look-up. The first sixteen entries are allocated to ARM internal sources with the others

mapping to MCU-defined interrupts.

AWIC The primary function of the Asynchronous Wake-up Interrupt Controller (AWIC) is to detect

asynchronous wake-up events in stop modes and signal to clock control logic to resume

system clocking. After clock restart, the NVIC observes the pending interrupt and performs

the normal interrupt or event processing.

Single-cycle I/O Port For high-speed, single-cycle access to peripherals, the Cortex-M0+ processor implements

a dedicated single-cycle I/O port.

Debug interfaces Most of this device's debug is based on the ARM CoreSight™ architecture. One debug

interface is supported:

• Serial Wire Debug (SWD)

Table 1-5. System modules

Module Description

System integration module (SIM) The SIM includes integration logic and several module configuration settings.

System mode controller The SMC provides control and protection on entry and exit to each power mode, control

for the Power management controller (PMC), and reset entry and exit for the complete

MCU.

Power management controller

(PMC)

The PMC provides the user with multiple power options. Multiple modes are supported that

allow the user to optimize power consumption for the level of functionality needed. Includes

power-on-reset (POR) and integrated low voltage detect (LVD) with reset (brownout)

capability and selectable LVD trip points.

Low-leakage wakeup unit (LLWU) The LLWU module allows the device to wake from low leakage power modes (LLS and

VLLS) through various internal peripheral and external pin sources.

Peripheral bridge The peripheral bridge converts the crossbar switch interface to an interface to access a

majority of peripherals on the device.

DMA multiplexer (DMAMUX) The DMA multiplexer selects from many DMA requests down to 4 for the DMA controller.

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