Z8F4822AR020SG Datasheet, PDF (34/323 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F64xx Series
Product Specification
14
Signal Descriptions
Table 3 lists the Z8 Encore! XP signals. To determine the available signals for a specific
package style, see the Pin Configurations section on page 8.
Table 3. Signal Descriptions
Signal
Mnemonic I/O
Description
General-Purpose I/O Ports A–H
PA[7:0]
I/O
Port A[7:0]. These pins are used for general-purpose I/O and support 5 V-toler-
ant inputs.
PB[7:0]
I/O
Port B[7:0]. These pins are used for general-purpose I/O.
PC[7:0]
I/O
Port C[7:0]. These pins are used for general-purpose I/O. These pins are used
for general-purpose I/O and support 5 V-tolerant inputs
PD[7:0]
I/O
Port D[7:0]. These pins are used for general-purpose I/O. These pins are used
for general-purpose I/O and support 5 V-tolerant inputs
PE[7:0]
I/O
PF[7:0]
I/O
PG[7:0]
I/O
PH[3:0]
I/O
I²C Controller
SCL
O
SDA
I/O
Port E[7:0]. These pins are used for general-purpose I/O. These pins are used
for general-purpose I/O and support 5 V-tolerant inputs.
Port F[7:0]. These pins are used for general-purpose I/O. These pins are used
for general-purpose I/O and support 5 V-tolerant inputs.
Port G[7:0]. These pins are used for general-purpose I/O. These pins are used
for general-purpose I/O and support 5 V-tolerant inputs.
Port H[3:0]. These pins are used for general-purpose I/O.
Serial Clock. This is the output clock for the I²C. This pin is multiplexed with a
general-purpose I/O pin. When the general-purpose I/O pin is configured for
alternate function to enable the SCL function, this pin is open-drain.
Serial Data. This open-drain pin transfers data between the I²C and a slave.
This pin is multiplexed with a general-purpose I/O pin. When the general-pur-
pose I/O pin is configured for alternate function to enable the SDA function,
this pin is open-drain.
SPI Controller
SS
I/O
SCK
I/O
Slave Select. This signal can be an output or an input. If the Z8 Encore! XP
F64xx Series is the SPI master, this pin may be configured as the Slave Select
output. If the Z8 Encore! XP F64xx Series is the SPI slave, this pin is the input
slave select. It is multiplexed with a general-purpose I/O pin.
SPI Serial Clock. The SPI master supplies this pin. If the Z8 Encore! XP F64xx
Series is the SPI master, this pin is an output. If the Z8 Encore! XP F64xx
Series is the SPI slave, this pin is an input. It is multiplexed with a general-pur-
pose I/O pin.
PS019924-0113
PRELIMINARY
Signal Descriptions