ZiLOG EZ80L92 Product User Guide

Brand: ZiLOG

Model: EZ80L92

Type: Product User Guide

This manual is also suitable for

EZ80190

ZiLOG Worldwide Headquarters • 532 Race Street • San Jose, CA 95126 • www.zilog.com

Kit Contents

•

Thermostat Application Module

•

CD-ROM: Software Examples and Documentation

Overview

The Thermostat Application Module provides a flexible platform for training and

experimentation on a number of ZiLOG microcontroller and microprocessor

devices. The module contains no processor. It is designed to attach to the eZ80

Development Platform, which contains both the processors and the control pro-

grams that make the development platforms function. Figure 1 shows a top view

of the Thermostat Application Module.

The Thermostat Application Module provides the following functionality:

•

Simple bit-I/O (LEDs, switches, lamp, and fan)

•

Alphanumeric LCD display via the GPIO interface

Figure 1. The Thermostat Application Module

ZiLOG Development Platforms

Thermostat Application

Module Kit

PUG001402-0103

Product User Guide

Product User Guide PUG001402-0103 Module Block Diagram

ZiLOG Development Platforms

Thermostat Application Module Kit

•

Temperature sensor via the I

C interface

•

EEPROM data storage via the I

C interface

•

Flash program storage for eZ80 family devices

Using simple bit I/O functionality, the user can experiment with the basic I/O and

interrupt functionality of the target processor. By combining the temperature sen-

sor with the lamp and fan actuation, more sophisticated real-time process control

loop experiments can be conducted. The LCD display provides general utility

toward developing more sophisticated user interfaces. Software drivers for the

LCD display and the I

C interface exist for several of the ZiLOG processor fami-

lies. Check the ZiLOG website for the latest versions available.

Module Block Diagram

A block diagram of the Thermostat Application Module appears in Figure 2, which

illustrates four major functional areas, all of which interface to the host processor

through a plug-in header. These functional areas are:

1. GPIO for simple user interface functions.

2. GPIO for LCD interface.

3. I

C for temperature sensor and EEPROM interface.

4. Flash memory for program storage (eZ80 option).

Figure 2. Thermostat Application Module Block Diagram

LCD Display

DMC16249B

I C EEPROM

24LC128

Pushbuttons

and LEDs

I C Temperature

Sensor

MAX6625

Thermostat Application Module I C Bus

Address/Control

Data

GPIO

Host Processor

Interface Header

HW 1 I C

GPIO

HW 2 I C

SW I C

Optional

Flash Memory

MT28F008B

Fan

Lamp

Product User Guide PUG001402-0103 Module Block Diagram

ZiLOG Development Platforms

Thermostat Application Module Kit

GPIO for Simple User Interface

The Thermostat Application Module provides the following simple user interface

functions:

•

3 Pushbutton switches (input)

•

3 LEDs (output)

•

1 Lamp (output)

•

1 Fan (output)

Each of these simple functions is individually controlled (or sensed) by a single I/O

line of the target processor.

The lamp and fan are powered from a 9VDC power supply. This supply is

provided by a separate power connector on the Thermostat Application

Module, or via the interface connector to the development platform. If the

9VDC supply is not present, all functions of the Thermostat Application

Module still operate correctly; however, the lamp and fan do not activate.

GPIO for LCD Interface

The Thermostat Application Module provides a 2x16-character LCD display that

uses an industry-standard 4-bit parallel interface. This interface is implemented

using 7 GPIO lines and software. The LCD can be used for a more sophisticated

menu-driven user interface or status display.

C Interface

The Thermostat Application Module implements a 2-wire I

C bus to provide com-

munication to the temperature sensor and the EEPROM. Because different pro-

cessors offer multiple hardware I

C channels, as well as the possibility to produce

C using only GPIO and software, a hardware multiplexer is provided between

the processor interface connector and the I

C devices on the module. As a result,

three different source pin combinations are permitted on the development plat-

form. Selection of the multiplexer input is performed by GPIO control. Assignment

of the source channels is a function of the development platform attached to the

Thermostat Application Module, as well as the application software running on

that development platform. Software drivers for the I

C bus exist for several of the

ZiLOG processor families. Check the ZiLOG website

for the latest version avail-

able.

Flash Memory

A 1MB Flash memory device is included on the Thermostat Application Module

for use with eZ80 systems. This memory can be mapped into the memory space

of the eZ80 by use of the eZ80’s chip select pins. Optionally, by removing a

Note:

Product User Guide PUG001402-0103 Hardware Requirements

ZiLOG Development Platforms

Thermostat Application Module Kit

jumper, this memory can be disabled from use by the eZ80. This memory allows

demonstration applications specifically related to the Thermostat Application Mod-

ule to be loaded and available as soon as the module is connected to an eZ80

system. The memory is of a general-purpose nature, and can be utilized for any

appropriate purpose.

Hardware Requirements

The Thermostat Application Module requires a development platform to function.

Supported combinations of development platforms are indicated in Table 1.

The Thermostat Application Module requires 5VDC @ 50mA, which is provided

by the development platform interface connectors. To operate the lamp and fan,

an additional 9VDC @ 450mA supply is required. Presently, only the eZ80 and

Z8 Encore! development platforms provide this supply across the development

platform interface connectors. To use the Thermostat Application Module with

other development platforms, an external 9VDC power supply must be used.

Setup and Installation

Jumper Locations

This section discusses the three jumpers that are located on the Thermostat

Application Module, as indicated in Figure 3. These jumpers can be repositioned

to meet the requirements of the application developer.

Table 1. Development Platforms Supporting the Thermostat Application Module

Development Platform Processor

Development Platform

Part Numbers

eZ80 Evaluation Board eZ80190 eZ801900110ZCO

eZ801900111ZCO

eZ801900210ZCO

eZ801900211ZCO

eZ80 Development Platform eZ80L92 eZ80L920210ZCO

eZ80F91 eZ80F910200ZCO

eZ80F92/F93 eZ80F920200ZCO

Z8 Encore! Development Platform Z8 Encore! Z8ENCORE000ZCO

Product User Guide PUG001402-0103 Setup and Installation

ZiLOG Development Platforms

Thermostat Application Module Kit

Write Protect Jumper for Flash Memory (J5)

When installed, the boot sector area of Flash memory on the Thermostat Applica-

tion Module cannot be altered. This J5 jumper must be removed to reprogram this

boot sector. The default position for this jumper is

Installed

Chip Select Jumper for Flash Memory (J10)

If the J10 jumper is installed, Flash memory on the Thermostat Application Mod-

ule is not enabled. If installed in the CS2 (upper) position, chip select 2 of the

eZ80 is used to enable Flash memory. This CS2 position is the default for use with

the eZ80 Evaluation Board for the eZ80190 device. If installed in the CS3 (lower)

position, chip select 3 of the eZ80 is used to enable Flash memory. This CS3 posi-

tion is the default for use with the eZ80 Development Platform.

External 9VDC Power (J9)

When the J9 jumper is installed, 9VDC power is drawn from the development

platform via header J6. The external 9VDC power connector (J1) is still con-

nected. The default position is

Not Installed

Figure 3. Thermostat Application Module Block Diagram

SW1 SW2 SW3

LED1 LED2 LED3

LCD Display

Fan

Lamp

Socket

(Under Lamp)

J10

Product User Guide PUG001402-0103 Interface Connector Pin Description

ZiLOG Development Platforms

Thermostat Application Module Kit

Installation Procedure

The Thermostat Application Module is designed to be attached to the top of one of

the ZiLOG development platforms listed in T

able 1. The pins located on the top of

the Thermostat Application Module J6 and J8 headers are available for the attach-

ment of test probes.

Always use a grounding strap to prevent damage resulting from electrostatic dis-

charge (ESD).

1. The Thermostat Application Module should be aligned with the J6 and J8

connectors of the development platform. Firm downward pressure must be

applied to seat the connectors.

Because there is no keying of the connectors, care should be exercised to en-

sure correct alignment and orientation.

2. If operation of the lamp and fan is required, a 9VDC source must be provided.

For the eZ80 Evaluation Board for the eZ80190 device, that source must be

an external power supply connected to J1. For the eZ80 and Z8 Encore!

development platforms, that supply can either be the external power supply or

the development platform itself. If development platform power is to be used,

disconnect the external power supply from J1 and insert a jumper into J9.

Interface Connector Pin Description

The interface connectors J6 and J8 provide both the method to connect the Ther-

mostat Application Module to the development platform as well as a convenient

attachment point for test equipment. Connector J6 provides access to the I/O port

bits and connector J8 provides access to the eZ80 address and data buses.

Different development platforms assign different I/O pins to the various functions

available on the Thermostat Application Modules. This differentiation is necessary

due to the different number of I/O pins available on the various processors sup-

ported. The I/O pin assignments are listed in Table 2.

Caution:

Product User Guide PUG001402-0103 Interface Connector Pin Description

ZiLOG Development Platforms

Thermostat Application Module Kit

Table 2. J6 I/O Pin Assignments by Development Platform*

Thermostat

Application

Module Pin

Development Platform I/O Pin Thermostat

Application

Module

Function

Active

StateeZ80190 eZ80L92 eZ80F91

eZ80F92/

eZ80F93

Encore!

54 PB0 PB0 PB0 PB0 PC1 Switch S1 Low

52 PB1 PB1 PB1 PB1 PC0 Switch S2 Low

50 PB2 PB2 PB2 PB2 PC2 Switch S3 Low

48 PB3 PB3 PB3 PB3 PC3 Lamp High

46 PB4 PB4 PB4 PB4 PC6 LED 1 High

44 PB5 PB5 PB5 PB5 PC7 LED 2 High

42 PB6 PB6 PB6 PB6 PC5 LED 3 High

40 PB7 PB7 PB7 PB7 PC4 Fan High

36 PD0 PD0 PD0 PD0 PA6 I

C SCL—

Source #1

—

34 PD1 PD1 PD1 PD1 PA7 I

C SDA—

Source #1

—

33 PA1 EM_D1 EM_D1 EM_D1 PE1 LCD/Write

(Control)

—

31 PA2 EM_D2 EM_D2 EM_D2 PE2 LCD/Read

(Control)

—

29 PA3 EM_D3 EM_D3 EM_D3 PE3 LCD

RegSelect

(Control)

—

28 PD4 PD4 PD4 PD4 PA3 I

C MUX

Select LSB

High

27,25,23,21 PA4:7 EM_D4:7 EM_D4:7 EM_D4:7 PE4:7 LCD DB4:7

(Data Bus)

—

24 PD6 PD6 PD6 PD6 PA1 I

C SCL—

Source #0

—

22 PD7 PD7 PD7 PD7 PA0 I

C SDA—

Source #0

—

10 N/C ID_0 ID_0 ID_0 ID_0 I

C Mux Select

MSB

High

7N/CSDA SDA SDA SDA I

C SDA—

Source #2

—

5N/CSCL SCL SCL SCL I

C SCL—

Source #2

—

Note: *Pin assignments for the eZ80L92, eZ80F91, and eZ80F92/eZ80F93 devices are identical.

Product User Guide PUG001402-0103 Programming Considerations

ZiLOG Development Platforms

Thermostat Application Module Kit

Due to the high-speed nature of the signals on the J8 connector, care should be

exercised in the electrical loading of these pins if test equipment or other circuitry

is attached.

Care should be exercised when developing or modifying software to operate with

the Thermostat Application Module to ensure that the correct I/O mapping is se-

lected for the processor chosen.

Programming Considerations

The Thermostat Application Module contains four elements that require sophisti-

cated programming techniques for proper operation. To ensure proper operation

of these devices, the manufacturer data sheets for the devices should be con-

sulted if the user intends to write code to work directly with these devices. See

Table 3.

If ZiLOG-provided drivers are used, the information in Table 3 is not

required.

Sample Software Project

A typical application for the Thermostat Application Module is to implement a

Heating Ventilation & Air Conditioning (HVAC) system simulation. In this example,

a means is provided to establish upper and lower temperature limits. The temper-

ature sensor is read on a periodic basis. If the temperature is discovered to be

below the lower setpoint, then the lamp is turned ON. As a result, the temperature

sensor is instructed to begin heating. When the temperature rises above the

upper setpoint, the Lamp is turned OFF and the fan is turned ON. As a result, the

temperature sensor is instructed to begin cooling. Various enhancements can be

added to this basic process control loop, such as the delivery of the ambient tem-

perature to the LCD display, allowing use of the switches to program different

modes of operation or adjust the setpoints, or even the ability to force failure

modes where the temperature is allowed to exceed a setpoint.

The Java

Thermostat Application Note (AN0104) discusses an Internet-enabled

HVAC simulation system using the eZ80190 device, and is supported by source

code

. This system offers the ability to perform the above functions in addition to

Table 3. Application Module Device Information

Device Manufacturer Part Number I

C Device Address

LCD Display Optrex DMC16249B —

C Temp. Sensor Maxim MAX6625 90h

C EEPROM Atmel AT24C128 A2h

Flash Memory Micron MT28F008B —

Caution:

Note:

Product User Guide PUG001402-0103 Sample Software Project

ZiLOG Development Platforms

Thermostat Application Module Kit

supporting a graphical user interface accessible via any Internet browser. It also

supplies automatic email generation in the event of an over-temperature failure

condition. Be sure to periodically check the ZiLOG website

for other Application

Notes featuring the Thermostat Application module.

1. There are two source code files: AN0104-SC01.zip and AN0104-SC02.zip.

Product User Guide PUG001402-0103 Schematic Diagrams

ZiLOG Development Platforms

Thermostat Application Module

Schematic Diagrams

Figures 3 and 4 diagram the layout of the Thermostat Application Module.

Figure 3. Thermostat Application Module Schematic Diagram, Top View

/WR

DB1

FNC

DB6

DB2

DB3

DB0

DB7

Gnd

Vcc

/RD

DB4

DB5

Lamp

LED3

SW1

SW2

SW3

LED2

LED1

9 VDC 500ma

2.1 MM CENTER PIN

PD6

PD7

PB0

PB1

PB2

PB3

PB4

PB5

PB6

PB7

Connects to eZ80 eval board 60 pin header (J6)

Gnd

PA1

PA2

PA3

PA4

PA5

PA6

PA7

Gnd

Halogen Lamp

12V 5W Bi-Pin

0.9" long

(w/o pins)

Fan

PD4

PD0

PD1

ID0

9VDC

SCL

SDA

MB_SCL

MB_SDA

HW_SCL

HW_SDA

I2C!Select

SW_SCL

GND

SW_SDA

MB_SCL

MB_SDA

SCL

SDA

P_UP1

P_UP2 P_UP3

P_UP4

P_UP2

P_UP1

P_UP3

P_UP4

VCC

0.1ufd

2N2222/SOT23

U9B

4 3

U9A

2 1

U9D

74C906M

8 9

R21

10k

180

R20

100

R19

OPEN

U9F

74C906M

12 13

0.1ufd

10K

DS1

LAMP

R12

OPEN

R15

10K

0.1ufd

U9C

74C906M

6 5

VFD/LCD!DISPLAY

MAX6625

SDA

GND

SCL

ADD

9V!External

1 2

R17

100

TIP120/TO-220

10K

R22

10k

10K

R10

180

10K!POT

R23

10k

DC!PWR!JACK

33uF!15V

FAN1

1.0"sq!x!0.4"thick

10K

R24

10k

RED

GRN

HEADER!30X2

910

11 12

13 14

15 16

17 18

19 20

21 22

23 24

25 26

27 28

29 30

31 32

33 34

35 36

37 38

39 40

41 42

43 44

45 46

47 48

49 50

51 52

53 54

55 56

57 58

59 60

0.1ufd

R16

100

33uF!10V

R11

180

74HCT4052/SO

VDD

VEE

I2C!LCD!DISPLAY

U9E

74C906M

10 11

R18

OPEN

R25

10k

10K

AT24C128

4 5

GND SDA

SCL

VCC

YEL

Product User Guide PUG001402-0103 Schematic Diagrams

ZiLOG Development Platforms

Thermostat Application Module

Figure 4. Thermostat Application Module Schematic Diagram, Bottom View

Connects to eZ80 eval board 60 pin header (J8)

GND

A11

GND

-WR

GND

A10

A21

A13

VDD

A21

A15

VDD

A18

GND

-RD

A13

A17

GND

A16

A14

A15

D5A5

A14

A10

-BRESET

A20

A12

-CS3

GND

GNDA8

VDD

-WR

-RD

A11

A19

A16

-BRESET

A19

GND

A17

VDD

GND

A18

A20

GND

A12

-CS2

-CS3

-CS2

VCC

VDD

J10

CS!SELECT

WRITE_PROTECT

1 2

SN74CBT3384ADW

BE1

BE2

VCC

GND

DIODE

MT28F008B

24 23

A10

A11

A12

DQ0

DQ1

DQ2

DQ3

DQ4

DQ5

DQ6

DQ7

A13

A14

A15

A16

A17

A18

A19

A20

OE VSS0

VSS1

VDD1

VDD0

A21

VPP

0.1

Header!30x2

910

11 12

13 14

15 16

17 18

19 20

21 22

23 24

25 26

27 28

29 30

31 32

33 34

35 36

37 38

39 40

41 42

43 44

45 46

47 48

49 50

51 52

53 54

55 56

57 58

59 60

R13

2.2K

0.1uF

0.1

R14

10K

Product User Guide PUG001402-0103 Thermostat Application Module

ZiLOG Development Platforms

Thermostat Application Module

This publication is subject to replacement by a later edition. To determine whether a later edition

exists, or to request copies of publications, contact:

ZiLOG Worldwide Headquarters

532 Race Street

San Jose, CA 95126

Telephone: 408.558.8500

Fax: 408.558.8300

www

.ZiLOG.com

Document Disclaimer

ZiLOG is a registered trademark of ZiLOG Inc. in the United States and in other countries. All other products and/or

service names mentioned herein may be trademarks of the companies with which they are associated.

technology described is intended to suggest possible uses and may be superseded. ZiLOG, INC. DOES NOT

ASSUME LIABILITY FOR OR PROVIDE A REPRESENTATION OF ACCURACY OF THE INFORMATION, DEVICES,

OR TECHNOLOGY DESCRIBED IN THIS DOCUMENT. ZiLOG ALSO DOES NOT ASSUME LIABILITY FOR

INTELLECTUAL PROPERTY INFRINGEMENT RELATED IN ANY MANNER TO USE OF INFORMATION, DEVICES,

OR TECHNOLOGY DESCRIBED HEREIN OR OTHERWISE. Devices sold by ZiLOG, Inc. are covered by warranty

and limitation of liability provisions appearing in the ZiLOG, Inc. Terms and Conditions of Sale. ZiLOG, Inc. makes no

warranty of merchantability or fitness for any purpose Except with the express written approval of ZiLOG, use of

information, devices, or technology as critical components of life support systems is not authorized. No licenses are

conveyed, implicitly or otherwise, by this document under any intellectual property rights.

ZiLOG EZ80L92 Product User Guide

Brand: ZiLOG

Model: EZ80L92

Type: Product User Guide

This manual is also suitable for

EZ80190

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ZiLOG EZ80L92 Product User Guide

This manual is also suitable for

ZiLOG EZ80L92 Product User Guide

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