EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 43

• Manufacturer Part Number: EZ80F91MCU
• Description: eZ80Acclaim-TM Flash Microcontrollers
• Manufacturer: ZILOG [Zilog, Inc.]

Table 2. Pin Identification on the eZ80F91 Device (Continued)
PS019209-0504
LQFP
Pin #
101
102
103
Note: *PHY represents the physical layer of the OSI model.
BGA
Pin#
D12
F8
D11
Symbol
PB1
IC1
PB2
SS
PB3
SCK
Function
GPIO Port B
Input Capture Schmitt-trigger input
GPIO Port B
SPI Slave
Select
GPIO Port B
SPI Serial
Clock
P R E L I M I N A R Y
Signal Direction
Bidirectional with
Schmitt-trigger input
Bidirectional with
Schmitt-trigger input
Schmitt-trigger input,
Active Low
Bidirectional with
Schmitt-trigger input
Bidirectional with
Schmitt-trigger input
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 B
pin, when programmed as output,
can be selected to be an open-
drain or open-source output.
Input Capture B Signal to Timer
1. This signal is multiplexed with
PB1.
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.
The slave select input line is used
to select a slave device in SPI
mode. This signal is multiplexed
with PB2.
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.
SPI serial clock. This signal is
multiplexed with PB3.
Product Specification
Architectural Overview
eZ80F91 MCU
24