Z8F640x/Z8F480x/Z8F320x/Z8F240x/Z8F160x
Z8 Encore!®
33
General-Purpose I/O
Overview
The Z8F640x family 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 con-
tains 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.
GPIO Port Availability By Device
Not all Z8F640x family products support all 8 ports (A-H). Table 10 lists the port pins
available with each device and package type.
Table 10. Port Availability by Device and Package Type
Device
Packages
40-pin
Port A Port B Port C Port D Port E Port F Port G Port H
Z8F1601
Z8F1601
Z8F1602
Z8F2401
Z8F2401
Z8F2402
Z8F3201
Z8F3201
Z8F3202
Z8F4801
Z8F4801
Z8F4802
Z8F4803
Z8F6401
[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]
[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]
[7:0]
[7:0]
[6:0] [6:3, 1:0]
-
-
-
-
44-pin
[7:0]
[7:0]
[6:0]
[7:0]
64- and 68-pin
40-pin
[7:0]
[7]
[3]
[3:0]
[6:0] [6:3, 1:0]
-
-
-
-
44-pin
[7:0]
[7:0]
[6:0]
[7:0]
-
-
-
-
64- and 68-pin
40-pin
[7:0]
[7]
[3]
[3:0]
[6:0] [6:3, 1:0]
-
-
-
-
44-pin
[7:0]
[7:0]
[6:0]
[7:0]
-
-
[7]
-
-
[3]
-
-
64- and 68-pin
40-pin
[7:0]
[3:0]
[6:0] [6:3, 1:0]
-
-
-
-
44-pin
[7:0]
[7:0]
[7:0]
[6:0]
[7:0]
[7:0]
-
-
64- and 68-pin
80-pin
[7:0]
[7:0]
-
[7]
[7:0]
-
[3]
[7:0]
-
[3:0]
[3:0]
-
40-pin
[6:0] [6:3, 1:0]
PS017610-0404
General-Purpose I/O
ZILOG [ ZILOG, INC. ]
