eZ80L92 MCU
Product Specification
14
Table 1. 100-Pin LQFP Pin Identification of eZ80L92 MCU (Continued)
Pin No Symbol
Function
Signal Direction
Description
70
71
72
73
PD2
GPIO Port D
Bidirectional
This pin can be used for GPIO. 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.
RTS0
PD3
Request to
Send
Output, Active Low
Bidirectional
Modem control signal from UART.
This signal is multiplexed with PD2.
GPIO Port D
This pin can be used for GPIO. 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.
CTS0
PD4
Clear to Send Input, Active Low
GPIO Port D Bidirectional
Modem status signal to the UART.
This signal is multiplexed with PD3.
This pin can be used for GPIO. 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.
DTR0
PD5
Data Terminal Output, Active Low
Ready
Modem control signal to the UART.
This signal is multiplexed with PD4.
GPIO Port D
Bidirectional
This pin can be used for GPIO. 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.
DSR0
Data Set
Ready
Input, Active Low
Modem status signal to the UART.
This signal is multiplexed with PD5.
PS013014-0107
Architectural Overview
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