EZ80L92MCU Datasheet, PDF (33/241 Pages) Zilog, Inc. – eZ80Acclaim Flash Microcontrollers

eZ80L92 MCU
Product Specification
18
Table 1. 100-Pin LQFP Pin Identification of the eZ80L92 Device (Continued)
Pin # Symbol
88 PB0
T0_IN
89 PB1
T1_IN
90 PB2
SS
91 PB3
SCK
Function
Signal Direction
GPIO Port B Bidirectional
Timer 0 In
Input
GPIO Port B Bidirectional
Timer 1 In
Input
GPIO Port B Bidirectional
Slave Select Input, Active Low
GPIO Port B Bidirectional
SPI Serial
Clock
Bidirectional
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.
Alternate clock source for Programmable
Reload Timers 0 and 2. This signal is
multiplexed with PB0.
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.
Alternate clock source for Programmable
Reload Timers 1 and 3. 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.
PS013012-1004
PRELIMINARY
Architectural Overview