EZ80L92MCU Datasheet, PDF (28/241 Pages) Zilog, Inc. – eZ80Acclaim Flash Microcontrollers

eZ80L92 MCU
Product Specification
13
Table 1. 100-Pin LQFP Pin Identification of the eZ80L92 Device (Continued)
Pin # Symbol
68 PD0
TxD0
IR_TXD
69 PD1
RxD0
IR_RXD
70 PD2
RTS0
Function
Signal Direction
GPIO Port D Bidirectional
UART
Output
Transmit Data
IrDA Transmit Output
Data
GPIO Port D Bidirectional
Receive Data Input
IrDA Receive Input
Data
GPIO Port D Bidirectional
Request to
Send
Output, Active Low
Description
This pin can be used for general-purpose I/
O. It can be individually programmed as
input or output and can also be used
individually as an interrupt input. Each Port
D pin, when programmed as output, can be
selected to be an open-drain or open-
source output. Port D is multiplexed with
one UART.
This pin is used by the UART to transmit
asynchronous serial data. This signal is
multiplexed with PD0.
This pin is used by the IrDA encoder/
decoder to transmit serial data. This signal
is multiplexed with PD0.
This pin can be used for general-purpose I/
O. It can be individually programmed as
input or output and can also be used
individually as an interrupt input. Each Port
D pin, when programmed as output, can be
selected to be an open-drain or open-
source output. Port D is multiplexed with
one UART.
This pin is used by the UART to receive
asynchronous serial data. This signal is
multiplexed with PD1.
This pin is used by the IrDA encoder/
decoder to receive serial data. This signal
is multiplexed with PD1.
This pin can be used for general-purpose I/
O. It can be individually programmed as
input or output and can also be used
individually as an interrupt input. Each Port
D pin, when programmed as output, can be
selected to be an open-drain or open-
source output. Port D is multiplexed with
one UART.
Modem control signal from UART. This
signal is multiplexed with PD2.
PS013012-1004
PRELIMINARY
Architectural Overview