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eZ80Acclaim!
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
form.
•
F91_WE
the eZ80F91 chip is enabled for writing. This signal is inverted from
the F91_WP signal on the eZ80F91 chip.
•
RTC_VDD
Peripheral Bus Mini-Module Connector, J1
Figure 3
Module Connector, J1, on the eZ80Acclaim! MDS adapter board.
on page 6 lists the pins and their functions.
UM017009-0708
®
MDS Adapter
When the F91_WE signal is active Low, internal Flash on
—
Test point for the Real-Time Clock power supply.
—
on page 6 displays the pin layout of 56-pin Peripheral Bus Mini-
eZ80F91 Modular Development Kit
®
development plat-
®
eZ80Acclaim!
MDS Adapter Board
User Manual
5
Table 1
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