Hardware User Guide
Issue 1.0 Date 2021-03-24
N300 Hardware User Guide
Copyright
Copyright © Neoway Technology Co., Ltd. All rights reserved.
ii
Copyright © Neoway Technology Co., Ltd. 2021. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior written
consent of Neoway Technology Co., Ltd.
is the trademark of Neoway Technology Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective
holders.
Notice
This document provides guide for users to use N300.
This document is intended for system engineers (SEs), development engineers, and test engineers.
THIS GUIDE PROVIDES INSTRUCTIONS FOR CUSTOMERS TO DESIGN THEIR APPLICATIONS.
PLEASE FOLLOW THE RULES AND PARAMETERS IN THIS GUIDE TO DESIGN AND COMMISSION.
NEOWAY WILL NOT TAKE ANY RESPONSIBILITY OF BODILY HURT OR ASSET LOSS CAUSED BY
IMPROPER OPERATIONS.
THE INFORMATION IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE DUE TO
PRODUCT VERSION UPDATE OR OTHER REASONS.
EVERY EFFORT HAS BEEN MADE IN PREPARATION OF THIS DOCUMENT TO ENSURE ACCURACY
OF THE CONTENTS, BUT ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS
DOCUMENT DO NOT CONSTITUTE A WARRANTY OF ANY KIND, EXPRESS OR IMPLIED.
Neoway provides customers complete technical support. If you have any question, please contact your
account manager or email to the following email addresses:
Website: http://www.neoway.com
N300 Hardware User Guide
Contents
Copyright © Neoway Technology Co., Ltd. All rights reserved.
iii
Contents
About This Document ................................................................................. viii
Scope ............................................................................................................................................... viii
Audience .......................................................................................................................................... viii
Change History ................................................................................................................................. viii
Conventions ..................................................................................................................................... viii
Related Documents ............................................................................................................................ ix
1 Safety Recommendations ....................................................................... 10
2 About N300 .............................................................................................. 11
2.1 Product Overview ........................................................................................................................ 11
2.2 Block Diagram ............................................................................................................................. 11
2.3 Basic Features ........................................................................................................................... 12
3 Module Pins ............................................................................................. 14
3.1 Pin Layout .................................................................................................................................. 14
3.2 Pin Description ........................................................................................................................... 15
4 Application Interfaces .............................................................................. 20
4.1 Power Interface .......................................................................................................................... 20
4.1.1 Power Supply Design ........................................................................................................ 21
4.1.2 VDDIO_1P8 ....................................................................................................................... 22
4.2 Control Interfaces ....................................................................................................................... 22
4.2.1 PWRKEY_N ...................................................................................................................... 23
4.3 Peripheral Interfaces .................................................................................................................. 24
4.3.1 USB ................................................................................................................................... 25
4.3.2 UART ................................................................................................................................. 26
4.3.3 USIM .................................................................................................................................. 28
4.3.4 PCM ................................................................................................................................... 29
4.3.5 SPI ..................................................................................................................................... 33
4.3.6 GPIO .................................................................................................................................. 34
4.4 RF Interface ................................................................................................................................ 35
4.4.1 Antenna Interface .............................................................................................................. 35
4.4.2 Antenna Assembling .......................................................................................................... 36
4.5 Other Interfaces ......................................................................................................................... 38
4.5.1 ADC ................................................................................................................................... 38
4.5.2 USB_BOOT ....................................................................................................................... 39
4.5.3 STATUS ............................................................................................................................. 39
5 Electrical Characteristics and Reliability .................................................. 40
5.1 Electrical Characteristics ............................................................................................................ 40
5.2 Temperature Features ................................................................................................................ 41
5.3 ESD Protection ........................................................................................................................... 41
6 RF Features ............................................................................................. 42
N300 Hardware User Guide
Contents
Copyright © Neoway Technology Co., Ltd. All rights reserved.
iv
6.1 Operating Bands ........................................................................................................................ 42
6.2 TX Power and RX Sensitivity ..................................................................................................... 42
7 Mechanical Characteristics ...................................................................... 43
7.1 Dimensions ................................................................................................................................. 43
7.2 Label ........................................................................................................................................... 44
7.3 Packing ....................................................................................................................................... 44
7.3.1 Reels ................................................................................................................................. 45
7.3.2 Moisture ............................................................................................................................. 45
8 Mounting .................................................................................................. 46
8.1 Bottom Dimensions .................................................................................................................... 46
8.2 Application Foot Print ................................................................................................................. 46
8.3 Stencil ......................................................................................................................................... 47
8.4 Solder Paste ............................................................................................................................... 47
8.5 SMT Oven Temperature Profile .................................................................................................. 48
Abbreviation ............................................................................................. 49
N300 Hardware User Guide
Table of Figures
Copyright © Neoway Technology Co., Ltd. All rights reserved.
v
Table of Figures
Figure 2-1 Block Diagram ................................................................................................................ 12
Figure 3-1 N300 pin definition .......................................................................................................... 14
Figure 4-1 Recommended design .................................................................................................... 21
Figure 4-2 Reference design of startup controlled by buttons ......................................................... 23
Figure 4-3 Reference design of startup controlled by MCU ............................................................. 23
Figure 4-4 Startup timing .................................................................................................................. 24
Figure 4-5 Hardware shutdown timing ............................................................................................. 24
Figure 4-6 Recommended design of the USB interface .................................................................. 25
Figure 4-7 Reference design of UART connection .......................................................................... 27
Figure 4-8 Recommended design of the level shifting circuit .......................................................... 27
Figure 4-9 Reference design of the SIM card interface ................................................................... 28
Figure 4-10 PCM reference design .................................................................................................. 30
Figure 4-11 PCM synchronization signal timing ............................................................................... 30
Figure 4-12 PCM data input timing .................................................................................................. 30
Figure 4-13 PCM data output timing ................................................................................................ 31
Figure 4-14 Reference design of the I2S connection ....................................................................... 32
Figure 4-15 I2S timing diagram ........................................................................................................ 32
Figure 4-16 SPI reference design .................................................................................................... 33
Figure 4-17 SPI reference design .................................................................................................... 34
Figure 4-18 π-type network .............................................................................................................. 35
Figure 4-19 Recommended RF PCB design ................................................................................... 36
Figure 4-20 Murata RF connector encapsulation specifications ...................................................... 37
Figure 4-21 RF cable connections ................................................................................................... 37
Figure 4-22 Antenna layout .............................................................................................................. 37
Figure 4-23 Layout around the antenna ........................................................................................... 38
Figure 4-24 Reference design of USB_BOOT ................................................................................. 39
Figure 7-1 N300 top and side view dimensions (unit: mm) .............................................................. 43
N300 Hardware User Guide
Table of Figures
Copyright © Neoway Technology Co., Ltd. All rights reserved.
vi
Figure 8-1 N300 Bottom view of PCB package (Unit: mm) ............................................................. 46
Figure 8-2 N300 Recommended PCB package (Unit: mm) ............................................................. 47
Figure 8-3 Oven temperature profile ................................................................................................ 48
N300 Hardware User Guide
Table of Tables
Copyright © Neoway Technology Co., Ltd. All rights reserved.
vii
Table of Tables
Table 2-1 Variants and frequency bands ........................................................................................... 11
Table 3-1 IO definition ...................................................................................................................... 15
Table 3-2 Pin Description ................................................................................................................. 15
Table 4-1 Parameters of the PCM timing ......................................................................................... 31
Table 4-2 I2S interface timing parameters ....................................................................................... 33
Table 4-3 Parameters of the SPI sequence diagram ....................................................................... 34
Table 5-1 N300 operating conditions................................................................................................ 40
Table 5-2 N300 current consumption (Typical) ................................................................................ 40
Table 5-3 N300 temperature features .............................................................................................. 41
Table 5-4 N300 ESD protection features ......................................................................................... 41
Table 6-1 N300 operating bands ...................................................................................................... 42
Table 6-2 N300 RF transmit power .................................................................................................. 42
Table 6-3 Cat M1 RX sensitivity of N300 ......................................................................................... 42
N300 Hardware User Guide
About This Document
Copyright © Neoway Technology Co., Ltd. All rights reserved.
viii
About This Document
Scope
This document is applicable to the N300 series.
It defines the features, indicators, and test standards of the N300 module and provides reference for
the hardware design of each interface.
Audience
This document is intended for system engineers (SEs), development engineers, and test engineers.
Change History
Issue
Date
Change
Changed By
1.0
2021-03
Initial draft
Wu Yongqiang
Conventions
Symbol
Indication
Indicates danger or warning. This information must be followed. Otherwise, a
catastrophic module or user device failure or bodily injury may occur.
Indicates caution. This symbol alerts the user to important points about using the
module. If these points are not followed, the module or user device may fail.
Indicates instructions or tips. This symbol provides advices or suggestions that
may be useful when using the module.
N300 Hardware User Guide
About This Document
Copyright © Neoway Technology Co., Ltd. All rights reserved.
ix
Related Documents
Neoway_N300_Datasheet
Neoway_N300_Product_Specifications
Neoway_N300_AT_Commands_Mannual
Neoway_N300_EVK_User_Guide
N300 Hardware User Guide
Chapter 1 Safety Recommendations
Copyright © Neoway Technology Co., Ltd. All rights reserved.
10
1 Safety Recommendations
Ensure that this product is used in compliance with the requirements of the country and environment.
Read the following safety recommendations to avoid bodily injuries or damages to the product or
workplace:
⚫ Do not use this product at any place with a risk of fire or explosion.
⚫ If this product is used in a place with flammable gas or dust, such as propane gas, gasoline, and
flammable spray, it will cause an explosion or a fire.
⚫ Disable the wireless communication function in places where wireless communication is
prohibited.
⚫ Do not use this product that can interfere with other electronic devices in environments, such as
hospitals and airplanes.
Follow the requirements below during the application design and use of this product:
⚫ Do not disassemble this product without permission from Neoway. Otherwise, we are entitled to
refuse to provide a further warranty.
⚫ Design your application correctly based on the hardware user guide. Connect this product to a
stable power supply and route traces following fire safety standards.
⚫ Avoid touching the pins of this product to prevent damages caused by ESD.
⚫ Do not insert or remove the SIM card or removable memory card when the module is not in the
power-off state.
N300 Hardware User Guide
Chapter 2 About N300
Copyright © Neoway Technology Co., Ltd. All rights reserved.
11
2 About N300
N300 is an industrial LTE-CAT M module that is developed based on Qualcomm MDM9205 platform.
It supports LTE-FDD mode.
2.1 Product Overview
Table 1-1 lists the variants and bands that N300 supports. * indicates in development.
Table 2-1 Variants and frequency bands
Variant
Category
Band
GNSS positioning
N300-KR
Cat M1
Cat M1: B3, B5, B26
Not supported
N300-WW*
Cat M1
Cat M1: B1, B2, B3, B4, B5, B8, B12, B13,
B18, B19, B20,
B25, B26, B27, B28, B66, B85
Not supported
N300 adopts 94-pin LGA package and its dimensions are 18 mm x 15 mm x 2.25 mm. With industrial-
grade performance, it is well applicable to the wireless meter reading terminal walkie-talkie, tracker,
handheld POS, and other IoT terminals.
2.2 Block Diagram
N300 consists of the following functionality units:
⚫ Baseband
⚫ Memory
⚫ 19.2 MHz crystal
⚫ Power management unit
⚫ RF section
⚫ Digital interfaces (SIM, UART, PCM*/I2S*, USB, SPI, and so on)
⚫ Analog interface (ADC)
N300 Hardware User Guide
Chapter 2 About N300
Copyright © Neoway Technology Co., Ltd. All rights reserved.
12
Figure 2-1 Block Diagram
Power
Manager
Baseband+Internal memory
MDM9205
RF Front-end-
module
Interface
SIM
VBAT RF transceiver
SDR105
19.2 MHz
GPIO
SDI
O
SPI
UAR
T
USB UART SPI PCM
/I2S
ADC
* indicates that the related function is under development.
2.3 Basic Features
Parameter
Description
Physical features
⚫ Dimensions: (18.0 ± 0.1) mm × (15.0 ± 0.1) mm × (2.25 ± 0.15) mm
⚫ Package: LGA
⚫ Weight: TBD
Temperature ranges
Operating: -30°C to +75°C
Storage: -40°C to +90°C
Operating voltage
VBAT_BB and VBAT_PA: 3.4 V- 4.2 V, typical value: 3.8 V
Current
PSM mode: <TBD
Idle mode: <TBD
Operating current: TBD
Application Processor
ARM Cortex-A7, 800 MHz main frequency, 256 KB L1 cache at most.
Memory
32 MB LPDDR2 + 64 MB NAND Flash
N300 Hardware User Guide
Chapter 2 About N300
Copyright © Neoway Technology Co., Ltd. All rights reserved.
13
Band
See Table 2-1.
Wireless rate
FDD-LTE:
Cat M1: Max 588 Kbps (DL)/Max 1.119 Mbps (UL)
Transmit power
LTE Cat-M: +23 dBm (Power Class 3)
Application Interfaces
4G antenna and 50 Ω characteristic impedance
Three UART interfaces, at most 4 Mbit/s.
One SIM interface, supporting only 1.8 V
One USB 2.0 interface, supporting only slave mode
One ADC interface; voltage detection range: 0.1 V to 1.7 V
One SPI interfaces, 50 MHz at most.
One PCM interface, it can be reused as I2S interface.
AT commands
3GPP Release13
Neoway extended commands
SMS
PDU, TXT
Protocol
TCP, UDP, HTTP, FTP, MQTT, LWM2M, COAP
Certification approval
CCC*, FCC*, RoHS*, PTCRB*, GCF*
* indicates that the related function is under development.
N300 Hardware User Guide
Chapter 3 Module Pins
Copyright © Neoway Technology Co., Ltd. All rights reserved.
14
3 Module Pins
There are 94 pins on N300 and their pads are introduced in LGA package.
3.1 Pin Layout
Figure 2-1 shows the pad layout of N300.
Figure 3-1 N300 pin definition
196.2773
GND
ANT
GND
GND
RESER
VED
GND
RESER
VED
GND
VBAT
_BB
SPI_M
OSI
SPI_C
LK
UART
2_RX
D
UART
1_TX
D
UART
1_CTS
UART
0_TX
D
UART
0_RTS
STAT
US
GND
GND
RESER
VED
GND
GND
GND
GND
ADC1
GND
GND
SPI_C
S
SPI_M
ISO
UART
2_TX
D
UART
1_RX
D
UART
1_RTS
UART
0_RXT
UART
0_CTS
GPIO_
3
GPIO_
4
GPIO_
5
GPIO_
6
RESER
VED
RESER
VED
GPIO_
1
GPIO_
2
PCM_
SYNC
PCM_
DOUT
RESER
VED
RESER
VED
USIM
_CLK
USIM
_DAT
A
PWR_
MON GND VBATT
_PA
GND RESER
VED GND GND RESER
VED GND RESER
VED
USB_
DP GND
PCM_
DIN PCM_
CLK
RESER
VED
RESER
VED
USIM
_RESE
T
USIM
_VCC USB_
BOOT GND
GND GND RESER
VED GND GND RESER
VED
USB_
VBUS
USB_
DM
RESER
VED
RESER
VED
RESER
VED
VDDI
O_1P
8
RESER
VED
RESER
VED
RESER
VED
RESER
VED
PWRK
EY_N PWM
0
GND
GND
GND
GND
GNDGND
GNDGND
A B C D E F G H J K L M N P R T U V W Y AA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
N300
Top View
POWER GND USIM PCM UART
SPI USB RESERVEDANT OTHER
N300 Hardware User Guide
Chapter 3 Module Pins
Copyright © Neoway Technology Co., Ltd. All rights reserved.
15
3.2 Pin Description
Table 2-1 lists the definition of IO types.
Table 3-1 IO definition
IO type
B
Digital input/output, COMS logic level
DO
Digital output, COMS logic level
DI
Digital input, COMS logic level
PO
Power output
PI
Power input
AO
Analog output
AI
Analog input
AIO
Analog input/output
Level Feature
P3
1.8 V digital IO
VIH min=1.2 V, VIL max= 0.3 V
VOH min=1.35 V, VOLmax=0.45 V
P4
Power supply for USB_PHY
Vtyp= 3.3 V
Table 3-2 Pin Description
Signal
Pin
I/O
Function Description
Level
Feature
Remarks
Power interface
VBAT_BB
AA3
PI
Main power supply of
the module baseband
Vmin = 3.4 V
Vmax = 4.3 V
Vtyp= 3.8 V
The external power
supplies at least 1 A
current to
VBAT_BB.
VBAT_PA
W1
PI
Main power supply of
the module RF
Vmin = 3.4 V
Vmax = 4.3 V
Vtyp= 3.8 V
The external power
supplies at least 1 A
current to
VBAT_PA.
VDDIO_1P8
N4
PO
1.8 V power output
Vnorm = 1.8 V
Imax = 50 mA
Used only for level
shifting and IO
power supply.
Leave this pin
floating if it is not
used.
N300 Hardware User Guide
Chapter 3 Module Pins
Copyright © Neoway Technology Co., Ltd. All rights reserved.
16
GND
B4, B6, A3, A7, A9, A13, B10, B12, B14, B16, A17, J19,
H6, H14, K18, F8, F12, M18, N19, W19, P6, P14, T8, T12,
U1, Y2, Y4, V2, G19, F18, D18, C19
Ensure that all
GND pins are
grounded.
Control Interfaces
PWRKEY_N
N16
DI
ON/OFF button
/
It is pulled up to 1.5
V internally.
It can be used to
power-on/off the
module and to
awaken the module
from PSM mode.
PWR_MON
R1
DO
Power-on/off indication
P3
STATUS
B2
DO
Control of startup
indication
P3
It is used to indicate
the module startup
status.
Leave this pin
floating if it is not
used.
UART0 interface
UART0_TXD
AA15
DO
Data transmitting
P3
It is used for data
transmission.
Leave this pin
floating if it is not
used.
UART0_RXD
Y16
DI
Data receiving
P3
UART0_CTS
Y18
DI
The user allows the
module to send data.
P3
Leave this pin
floating if it is not
used.
UART0_RTS
AA17
DO
The module requests
the user to send data.
P3
Leave this pin
floating if it is not
used.
RJ45 interface
UART1_RTS
Y14
DO
The module requests
the user to send data.
P3
Leave this pin
floating if it is not
used.
UART1_CTS
AA13
DI
The user allows the
module to send data.
P3
Leave this pin
floating if it is not
used.
UART1_RXD
Y12
DI
Data receiving
P3
It is used for data
transmission.
Leave this pin
floating if it is not
UART1_TXD
AA11
DO
Data transmitting
P3
N300 Hardware User Guide
Chapter 3 Module Pins
Copyright © Neoway Technology Co., Ltd. All rights reserved.
17
1
Before the module is completely powered on, these pins cannot be pulled up to a high level or grounded. They must
be maintained in a high impedance state. Otherwise the module cannot boot normally.
used.
UART2 interface
UART2_TXD1
Y10
DO
Data transmitting
P3
It is used for data
transmission.
Leave this pin
floating if it is not
used.
UART2_RXD
AA9
DI
Data receiving
P3
SIM interface
USIM_VCC
P2
PO
SIM power output
Only support 1.8 V,
IOmax =30 mA
USIM_DATA
N1
B
SIM data input and
output
P3
A 10 kΩ pull-up
resistor must be
connected to
USIM_VCC.
USIM_CLK
L1
DO
SIM clock
P3
USIM_RESET
M2
DO
SIM reset
P3
USB interface
USB_VBUS
T18
PI
Voltage detection pin
4.75 V to
5.25 V
Typical
value: 5.0 V
Compliant with the
USB2.0
specification
USB_DM
V18
AIO
USB data negative
signal
USB_DP
U19
AIO
USB data positive
signal
ADC interface
ADC1
B18
AI
Universal analog-to-
digital signal
Vmax = 1.7 V
Vmin=0.1 V
15-bit resolution
Detectable voltage
range from 0.1 V to
1.7 V.
Leave this pin
floating if it is not
used.
PCM interface
PCM_SYNC
C1
B
PCM synchronization
signal
P3
Can be multiplexed
as I2S_WS
N300 Hardware User Guide
Chapter 3 Module Pins
Copyright © Neoway Technology Co., Ltd. All rights reserved.
18
PCM_DIN
D2
DI
PCM data receiving
P3
Can be multiplexed
as I2S_RX
PCM_DOUT
E1
DO
PCM data sending
P3
Can be multiplexed
as I2S_TX
PCM_CLK
F2
DO
PCM data clock
P3
Can be multiplexed
as I2S_SCLK.
SPI interface
SPI_CLK
AA7
DO
Clock signal
P3
Leave this pin
floating if it is not
used.
SPI_MISO
Y8
DI
Output of the slave
device and input of the
master device
P3
Leave this pin
floating if it is not
used.
SPI_MOSI
AA5
DO
Input of the slave
device and output of the
master device
P3
Leave this pin
floating if it is not
used.
SPI_CS_N
Y6
DO
Chip select signal of the
slave device
P3
Leave this pin
floating if it is not
used.
GPIO interfaces
GPIO_1
V11
B
GPIO with interrupt
P3
GPIO_2
V13
B
GPIO without interrupt
P3
GPIO_3
D7
B
GPIO without interrupt
P3
GPIO_4
D9
B
GPIO without interrupt
P3
GPIO_5
D11
B
GPIO without interrupt
P3
GPIO_6
D13
B
GPIO without interrupt
P3
Do not pull up the
pin before module
startup.
Antenna port
ANT
A5
AIO
Main antenna pin
50 Ω impedance for
traces
Other Interfaces
PWM0
R16
DO
PWM function
P3
Leave this pin
floating if it is not
used.
USB_BOOT
T2
DI
Forcible download
P3
Upon power-on, the
N300 Hardware User Guide
Chapter 3 Module Pins
Copyright © Neoway Technology Co., Ltd. All rights reserved.
19
control pin
USB_BOOT pin is
temporarily pulled
up to VDDIO_1P8,
and then the
module can enter
the forcible
download mode
RESERVED
G1, A15, B8, G4, L16, L4, J4, J16, V9, V7, R4, P18, R19,
J1, H2, K2, A11, L19, G16, H18, E19
Reserved pins;
leave them floating.
Can be used for
function extension.
N300 Hardware User Guide
Chapter 4 Application Interfaces
Copyright © Neoway Technology Co., Ltd. All rights reserved.
20
4 Application Interfaces
N300 provides the power, control, communication, and RF interfaces to meet the functional
requirements of customers in different application scenarios.
This chapter describes how to design each interface and provides reference designs and guidelines.
4.1 Power Interface
The schematic design and PCB layout of the power supply part are the most critical process in
application design and they will determine the performance of customers’ applications. Please read the
design guidelines of power supply and comply with the correct design principles to obtain the optimal
circuit performance.
Signal
Pin
I/O
Function Description
Remarks
VBAT_BB
AA3
PI
Main power supply of the
module baseband
3.4 V to 4.3 V, typical value: 3.8 V.
VBAT_PA
W1
PI
Main power supply of the
module RF
VDDIO_1P8
N4
PO
1.8 V power output
The maximum output current is 50 mA.
This pin is only used for level shifting.
It is recommended that you add TVS
protection when using this pin.
GND
B4, B6, A3, A7, A9, A13, B10, B12, B14,
B16, A17, J19, H6, H14, K18, F8, F12,
M18, N19, W19, P6, P14, T8, T12, U1,
Y2, Y4, V2, G19, F18, D18, C19
Ensure that all GND pins are grounded.
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