EZ80F91MCU Datasheet, PDF (42/396 Pages) Zilog, Inc. – eZ80Acclaim-TM Flash Microcontrollers

eZ80F91 MCU
Product Specification
23
Table 2. Pin Identification on the eZ80F91 Device (Continued)
LQFP BGA
Pin # Pin#
Symbol
Function
Signal Direction
Description
97 E12 PC7
GPIO Port C
Bidirectional with
Schmitt-trigger input
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.
RI1
Ring Indicator Schmitt-trigger input, Modem status signal to the
Active Low
UART. This signal is multiplexed
with PC7.
98
E11
V_DD
99 F9
V_SS
100 E10 PB0
Power Supply
Power Supply.
Ground
Ground.
GPIO Port B
Bidirectional with
Schmitt-trigger input
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 B
pin, when programmed as output,
can be selected to be an open-
drain or open-source output.
IC0
Input Capture Schmitt-trigger input Input Capture A Signal to Timer
1. This signal is multiplexed with
PB0.
EC0
Event Counter Schmitt-trigger input Event Counter Signal to Timer 1.
This signal is multiplexed with
PB0.
Note: *PHY represents the physical layer of the OSI model.
PS019209-0504
PRELIMINARY
Architectural Overview