ZiLOG eZ80F91 User manual

Copyright ©2008 by Zilog®, Inc. All rights reserved.
www.zilog.com
eZ80Acclaim!® Microcontrollers
eZ80F91 Modular
Development Kit
User Manual
UM017009-0708

eZ80F91 Modular Development Kit
User Manual
UM017009-0708 Revision History
ii
Revision History
Each instance in Revision History reflects a change to this document from
its previous revision. For more details, refer to the corresponding pages
and appropriate links in the table below.
Date Revision Level Description Page Number
July 2008 09 Updated Figure 8 and Figure 9 31 and 32
May 2008 08 Added Figure 8 and Figure 9
Updated Table 1 and Table 2
Updated I/O Mini-Module
Connector, J2 section
Updated Peripheral Bus External
Connector JP1 section
Updated for style guide changes
31 and 32
6and 10
9
12
All

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Table of Contents
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Kit Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safeguards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
eZ80F91 Contest Kit Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
eZ80Acclaim!
®
MDS Adapter Board . . . . . . . . . . . . . . . . . . . . . . . . . 5
eZ80F91 Module Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Peripheral Bus Mini-Module Connector, J1 . . . . . . . . . . . . . . . . 5
I/O Mini-Module Connector, J2 . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Peripheral and I/O External Interface . . . . . . . . . . . . . . . . . . . . . . . 12
Peripheral Bus External Connector JP1 . . . . . . . . . . . . . . . . . . 12
I/O External Connector JP2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
GPRS Wireless Modem Interface . . . . . . . . . . . . . . . . . . . . . . . . . 19
eZ80Acclaim! MDS Adapter Board Jumper Settings . . . . . . . . . . . 21
eZ80Acclaim!®MDS Adapter Board Test Switch and LEDs . . . . . 22
eZ80F91 Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
eZ80F91 Module Operational Description . . . . . . . . . . . . . . . . . . . 23
Static RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
On-Chip Flash Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
External Flash Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
IrDA Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Programming On-Chip Flash Memory . . . . . . . . . . . . . . . . . . . . . . 27
Flash Loader Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
ZDSII. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
IrDA Port Not Working . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

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Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
eZ80Acclaim!®MDS Adapter Board Schematic . . . . . . . . . . . 33
eZ80F91 Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Customer Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

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Introduction
Zilog’s eZ80F91 Contest Kit–eZ80F910100KITG and
eZ80F910200KITG–provides a general-purpose platform for creating a
design based on eZ80F91 microcontroller. The eZ80F91 is a member of
Zilog’s eZ80Acclaim!®product family, which offers an on-chip Flash
capability. The eZ80F91 Contest Kit features an eZ80F91 Module and an
eZ80Acclaim! MDS Adapter Board. The eZ80F91 Module is mounted
onto the eZ80Acclaim! MDS Adapter Board.
Kit Features
The key features of the eZ80F91 Contest Kit include:
• eZ80F91 Module:
– eZ80F91 device operating at 50 MHz, with 256 KB of internal
Flash memory, and 8 KB of internal SRAM memory
– 128 KB of off-chip SRAM memory
– On-chip Ethernet Media Access Controller (EMAC)
– Ethernet port and PHY
– Real-Time Clock support
– Footprint for an SIR IrDA transceiver
– Two 56-pin mini-module connectors for attachment to the
eZ80Acclaim! MDS adapter board
• eZ80Acclaim! MDS Adapter Board:
– Footprint for 2 M x 8 external Flash memory such as
AM29LV160D
– Footprint for 10-bit bus switch such as 74CBTLV3384, to support
external Flash

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– RS-232 connector with interface circuit for UART0
– ZDI and JTAG debug connectors
– Two 56-pin mini-module connectors
– Two 60-pin interface connectors for connection to an external
application or development board (not supplied)
– 32-pin header and footprint for a GPRS modem on UART1
– One green 3.3 OK LED
– One yellow Test LED and pushbutton
– 5 VDC external power supply
• USB Smart Cable
• eZ80Acclaim!®software and documentation CD-ROM
• Schematics for the eZ80F91 Mini Enet Module and eZ80Acclaim!
MDS adapter board
Safeguards
The following precautions must be taken while working with the devices
described in this document.
Always use a grounding strap to prevent damage resulting from
electrostatic discharge (ESD).
eZ80F91 Contest Kit Overview
The purpose of the eZ80F91 Contest Kit is to provide a set of tools for
designing an application based on the eZ80F91 microcontroller.
A block diagram of the eZ80Acclaim! MDS adapter board is displayed in
Figure 1 on page 3.
Caution:

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Figure 1. eZ80Acclaim!®MDS Adapter Board Block Diagram

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Figure 2 displays a block diagram of the eZ80F91 Module.
Figure 2. eZ80F91 Mini Enet Module Block Diagram
Schematics for the eZ80F91 Module and eZ80Acclaim!®MDS adapter
board are provided in the Schematics section. See Figure 10 on page 33
through Figure 13 on page 36.

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eZ80Acclaim!®MDS Adapter
Board
This section describes the function of eZ80Acclaim! MDS adapter board.
eZ80F91 Module Interface
The eZ80F91 Module interface on the eZ80Acclaim! MDS adapter board
consists of two 56-pin mini-module receptacles.
Almost all of these receptacles’ signals are connected directly to the CPU.
Three input signals offer options by disabling certain functions of the
eZ80F91 Module.
These three input signals are:
• Disable IrDA (DIS_IrDA)—Used only if you have installed an
external SIR IrDA transceiver onto the eZ80F91 Module. When the
DIS_IrDA input signal is pulled Low, the IrDA transceiver located on
the eZ80F91 Module is disabled. As a result, UART0 can be used
with RS-232 or RS-485 interfaces on the eZ80®development plat-
form.
• F91_WE—When the F91_WE signal is active Low, internal Flash on
the eZ80F91 chip is enabled for writing. This signal is inverted from
the F91_WP signal on the eZ80F91 chip.
• RTC_VDD—Test point for the Real-Time Clock power supply.
Peripheral Bus Mini-Module Connector, J1
Figure 3 on page 6 displays the pin layout of 56-pin Peripheral Bus Mini-
Module Connector, J1, on the eZ80Acclaim! MDS adapter board. Table 1
on page 6 lists the pins and their functions.

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Figure 3. eZ80Acclaim!®MDS Adapter Board Peripheral Bus Mini-Module
Connector J1 Pin Configuration
Table 1. eZ80Acclaim!®MDS Adapter Board Peripheral Bus Connector J1
Identification1,2
Pin # Symbol Signal Direction Active Level eZ80F91 Signal Note
3 A6 Bidirectional n/a Yes
4 A0 Bidirectional n/a Yes
5 A7 Bidirectional n/a Yes
6 A2 Bidirectional n/a Yes
7 A8 Bidirectional n/a Yes
8 A1 Bidirectional n/a Yes

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9 A10 Bidirectional n/a Yes
10 A3 Bidirectional n/a Yes
13 RD Output Low Yes
14 D5 Bidirectional n/a Yes
15 D1 Bidirectional n/a Yes
16 D4 Bidirectional n/a Yes
17 D0 Bidirectional n/a Yes
18 D2 Bidirectional n/a Yes
19 A17 Bidirectional n/a Yes
20 D6 Bidirectional n/a Yes
23 A19 Bidirectional n/a Yes
24 A18 Bidirectional n/a Yes
25 A21 Bidirectional n/a Yes
26 A20 Bidirectional n/a Yes
27 A23 Bidirectional n/a Yes
28 A22 Bidirectional n/a Yes
29 CS3 Output Low Yes
30 CS0 Output Low Yes
33 F91_WE Input Low No Jumper on board
34 CS2 Output Low Yes
35 D3 Bidirectional n/a Yes
Table 1. eZ80Acclaim!®MDS Adapter Board Peripheral Bus Connector J1
Identification1,2 (Continued)
Pin # Symbol Signal Direction Active Level eZ80F91 Signal Note

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36 RTC_V
DD
Input n/a Yes
39 D7 Bidirectional n/a Yes
40 HALT_SLP Output Low Yes
41 A13 Bidirectional n/a Yes
42 WR Output Low Yes
43 A12 Bidirectional n/a Yes
44 A11 Bidirectional n/a Yes
45 A14 Bidirectional n/a Yes
46 A9 Bidirectional n/a Yes
49 A16 Bidirectional n/a Yes
50 A5 Bidirectional n/a Yes
51 A15 Bidirectional n/a Yes
52 A4 Bidirectional n/a Yes
Notes
1. To simplify interface description, Power and Ground nets are omitted from this table. The entire
interface is represented in the eZ80Acclaim! MDS adapter board schematics. See Figure 10
on page 33 and Figure 11 on page 34.
2. Additional note: external capacitive loads on RD, WR, IORQ, MREQ, D0–D7 and A0–A23
should be below 10 pF to satisfy the timing requirements for the eZ80®CPU. All unused
inputs should be pulled to either VDD or GND, depending on their inactive levels to reduce
power consumption and to reduce noise sensitivity. To prevent EMI, the EZ80CLK output can
be deactivated via software in the eZ80F91’s Peripheral Power-Down Register.
Table 1. eZ80Acclaim!®MDS Adapter Board Peripheral Bus Connector J1
Identification1,2 (Continued)
Pin # Symbol Signal Direction Active Level eZ80F91 Signal Note

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I/O Mini-Module Connector, J2
Figure 4 displays the pin layout of the 56-pin Peripheral Bus Mini-Mod-
ule Connector, J2, on the eZ80Acclaim!®MDS adapter board. Table 2 on
page 10 lists the pins and their functions.
Figure 4. eZ80Acclaim! MDS Adapter Board I/O Mini-Module Connector J2

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Table 2. eZ80Acclaim!®MDS Adapter Board I/O Mini-Module Connector J2
Identification1
Pin # Symbol Signal Direction Active Level eZ80F91 Signal2
1 PA3 Bidirectional n/a Yes
2 PA4 Bidirectional n/a Yes
3 PA7 Bidirectional n/a Yes
4 PA5 Bidirectional n/a Yes
5 PB5 Bidirectional n/a Yes
6 PA0 Bidirectional n/a Yes
7 PB6 Bidirectional n/a Yes
8 PA1 Bidirectional n/a Yes
10 EZ80CLK Output n/a Yes
11 PB1 Bidirectional n/a Yes
12 PB7 Bidirectional n/a Yes
13 PC4 Bidirectional n/a Yes
14 PB3 Bidirectional n/a Yes
15 PA6 Bidirectional n/a Yes
16 PC7 Bidirectional n/a Yes
17 PB4 Bidirectional n/a Yes
18 PA2 Bidirectional n/a Yes
21 PB2 Bidirectional n/a Yes
22 PB0 Bidirectional n/a Yes
23 PC6 Bidirectional n/a Yes

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24 PC5 Bidirectional n/a Yes
25 PC3 Bidirectional n/a Yes
26 PC1 Bidirectional n/a Yes
27 PC2 Bidirectional n/a Yes
28 PC0 Bidirectional n/a Yes
31 TMS Input n/a Yes
32 PD7 Bidirectional n/a Yes
33 PD6 Bidirectional n/a Yes
34 PD5 Bidirectional n/a Yes
35 PD3 Bidirectional n/a Yes
36 PD4 Bidirectional n/a Yes
37 TRSTN Input Low Yes
38 TRIGOUT Output n/a Yes
41 TCK Input n/a Yes
42 PD1 Bidirectional n/a Yes
43 TDI Bidirectional n/a Yes
44 PD0 Bidirectional n/a Yes
45 PD2 Bidirectional n/a Yes
46 TDO Output n/a Yes
49 DIS_IRDA Input Low No
50 IICSCL I/O n/a Yes
Table 2. eZ80Acclaim!®MDS Adapter Board I/O Mini-Module Connector J2
Identification1(Continued)
Pin # Symbol Signal Direction Active Level eZ80F91 Signal2

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Peripheral and I/O External Interface
The Peripheral and I/O external interface on the eZ80Acclaim! MDS
adapter board consists of two 60-pin mini-module receptacles.
Peripheral Bus External Connector JP1
Figure 5 on page 13 displays the pin layout of Peripheral Bus External
Connector, JP1, in the 60-pin header on the eZ80Acclaim! MDS adapter
board. Table 3 on page 14 lists the pins and their functions.
51 WAIT Input Low Yes
52 IICSDA I/O n/a Yes
53 RST I/O Low Yes
54 NMI Input Low Yes
Notes
1. To simplify interface description, Power and Ground nets are omitted from this table. The entire
interface is represented in the eZ80Acclaim! MDS adapter board schematics. See Figure 10
on page 33 and Figure 11 on page 34.
2. The Power and Ground nets are connected directly to the eZ80F91 device.
Table 2. eZ80Acclaim!®MDS Adapter Board I/O Mini-Module Connector J2
Identification1(Continued)
Pin # Symbol Signal Direction Active Level eZ80F91 Signal2

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Figure 5. eZ80Acclaim!®MDS Adapter Board Peripheral Bus External Connector
JP1
The following signals are not connected and are unavailable on
the associated pins:
– Pin 36, DIS_FLASH
– Pin 42, CS1
– Pin 53, MREQ
– Pin 54, IOREQ
– Pin 58, INSTRD
– Pin 59, BUSACK
– Pin 60, BUSREQ
Caution:

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Table 3. eZ80Acclaim!®MDS Adapter Board Peripheral Bus External Connector JP1
Identification1
Pin # Symbol Signal Direction Active Level eZ80F91 Signal2
1-4, 6, 8,
35 unused n/a n/a n/a
5TRSTN
Input Low Yes
11 A6 Bidirectional n/a Yes
12 A0 Bidirectional n/a Yes
13 A10 Bidirectional n/a Yes
14 A3 Bidirectional n/a Yes
17 A8 Bidirectional n/a Yes
18 A7 Bidirectional n/a Yes
19 A13 Bidirectional n/a Yes
20 A9 Bidirectional n/a Yes
21 A15 Bidirectional n/a Yes
22 A14 Bidirectional n/a Yes
23 A18 Bidirectional n/a Yes
24 A16 Bidirectional n/a Yes
25 A19 Bidirectional n/a Yes
27 A2 Bidirectional n/a Yes
28 A1 Bidirectional n/a Yes
29 A11 Bidirectional n/a Yes
30 A12 Bidirectional n/a Yes
31 A4 Bidirectional n/a Yes

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32 A20 Bidirectional n/a Yes
33 A5 Bidirectional n/a Yes
34 A17 Bidirectional n/a Yes
36 DIS_FLASH Input Low No
37 A21 Bidirectional n/a Yes
39 A22 Bidirectional n/a Yes
40 A23 Bidirectional n/a Yes
41 CS0 Output Low Yes
42 CS1 Output Low Yes
43 CS2 Output Low Yes
44-49 D[0:5] Bidirectional n/a Yes
51 D7 Bidirectional n/a Yes
52 D6 Bidirectional n/a Yes
53 MREQ Output Low Yes
54 IOREQ Output Low Yes
56 RD Output Low Yes
57 WR Output Low Yes
Table 3. eZ80Acclaim!®MDS Adapter Board Peripheral Bus External Connector JP1
Identification1(Continued)
Pin # Symbol Signal Direction Active Level eZ80F91 Signal2

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I/O External Connector JP2
Figure 6 on page 17 displays the pin layout of the I/O Connector in the
60-pin header on the eZ80Acclaim! MDS adapter board. Table 4 on page
17 lists the pins and their functions.
58 INSTRD Output Low Yes
59 BUSACK Output Low Yes
60 BUSREQ Input Low Yes
Notes
1. To simplify interface description, Power and Ground nets are omitted from this table. The entire
interface is represented in the eZ80Acclaim! MDS adapter board schematics.See Figure 10
on page 33 and Figure 11 on page 34.
2. The Power and Ground nets are connected directly to the eZ80F91 device.
Table 3. eZ80Acclaim!®MDS Adapter Board Peripheral Bus External Connector JP1
Identification1(Continued)
Pin # Symbol Signal Direction Active Level eZ80F91 Signal2