EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 40
EZ80F91MCU
Manufacturer Part Number
EZ80F91MCU
Description
eZ80Acclaim-TM Flash Microcontrollers
Manufacturer
ZILOG [Zilog, Inc.]
Datasheet
1.EZ80F91MCU.pdf
(396 pages)
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Table 2. Pin Identification on the eZ80F91 Device (Continued)
PS019209-0504
LQFP
Pin #
91
92
93
Note: *PHY represents the physical layer of the OSI model.
BGA
Pin#
G10
G9
F12
Symbol
PC1
RxD1
PC2
RTS1
PC3
CTS1
Function
GPIO Port C
Receive Data
GPIO Port C
Request to
Send
GPIO Port C
Clear to Send Schmitt-trigger input,
P R E L I M I N A R Y
Signal Direction
Bidirectional with
Schmitt-trigger input
Schmitt-trigger input
Bidirectional with
Schmitt-trigger input
Output, Active Low
Bidirectional with
Schmitt-trigger input
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 C
pin, when programmed as output,
can be selected to be an open-
drain or open-source output. Port
C is multiplexed with one UART.
This pin is used by the UART to
receive asynchronous serial data.
This signal is multiplexed with
PC1.
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 C
pin, when programmed as output,
can be selected to be an open-
drain or open-source output. Port
C is multiplexed with one UART.
Modem control signal from
UART. This signal is multiplexed
with PC2.
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 C
pin, when programmed as output,
can be selected to be an open-
drain or open-source output. Port
C is multiplexed with one UART.
Modem status signal to the
UART. This signal is multiplexed
with PC3.
Product Specification
Architectural Overview
eZ80F91 MCU
21
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