Z8F6421PM020SC Datasheet, PDF (71/299 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers Z8 Encore-R 64K Series

Z8 Encore!^® 64K Series
Product Specification
51
General-Purpose I/O
Overview
The 64K Series products support a maximum of seven 8-bit ports (Ports A–G) and one 4-
bit port (Port H) for general-purpose input/output (I/O) operations. Each port contains
control and data registers. The GPIO control registers are used to determine data direction,
open-drain, output drive current and alternate pin functions. Each port pin is individually
programmable. All ports (except B and H) support 5V-tolerant inputs.
GPIO Port Availability By Device
Table 11 lists the port pins available with each device and package type.
Table 11. Port Availability by Device and Package Type
Device
Z8X1621
Z8X1621
Z8X1622
Z8X2421
Z8X2421
Z8X2422
Z8X3221
Z8X3221
Z8X3222
Z8X4821
Z8X4821
Z8X4822
Z8X4823
Packages
40-pin
44-pin
64- and 68-pin
40-pin
44-pin
64- and 68-pin
40-pin
44-pin
64- and 68-pin
40-pin
44-pin
64- and 68-pin
80-pin
Port A
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
Port B
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
Port C
[6:0]
[7:0]
[7:0]
[6:0]
[7:0]
[7:0]
[6:0]
[7:0]
[7:0]
[6:0]
[7:0]
[7:0]
[7:0]
Port D Port E
[6:3, 1:0] -
[6:0]
-
[7:0] [7:0]
[6:3, 1:0] -
[6:0]
-
[7:0] [7:0]
[6:3, 1:0] -
[6:0]
-
[7:0] [7:0]
[6:3, 1:0] -
[6:0]
-
[7:0] [7:0]
[7:0] [7:0]
Port F
-
-
[7]
-
-
[7]
-
-
[7]
-
-
[7]
[7:0]
Port G
-
-
[3]
-
-
[3]
-
-
[3]
-
-
[3]
[7:0]
Port H
-
-
[3:0]
-
-
[3:0]
-
-
[3:0]
-
-
[3:0]
[3:0]
PS019915-1005
General-Purpose I/O