EZ80F91MCU Datasheet, PDF (44/396 Pages) Zilog, Inc. – eZ80Acclaim-TM Flash Microcontrollers

eZ80F91 MCU
Product Specification
25
Table 2. Pin Identification on the eZ80F91 Device (Continued)
LQFP BGA
Pin # Pin#
Symbol
Function
Signal Direction
Description
104 E9
PB4
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.
IC2
Input Capture Schmitt-trigger input Input Capture A Signal to Timer
3. This signal is multiplexed with
PB4.
105 D10 PB5
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.
IC3
Input Capture Schmitt-trigger input Input Capture B Signal to Timer
3. This signal is multiplexed with
PB5.
106 C12 PB6
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.
MISO
SPI Master In
Slave Out
Bidirectional with
Schmitt-trigger input
The MISO line is configured as an
input when the eZ80F91 device is
an SPI master device and as an
output when eZ80F91 is an SPI
slave device. This signal is
multiplexed with PB6.
Note: *PHY represents the physical layer of the OSI model.
PS019209-0504
PRELIMINARY
Architectural Overview