z8f0822 ZiLOG Semiconductor, z8f0822 Datasheet - Page 60

• Manufacturer Part Number: z8f0822
• Description: High Performance 8-bit Microcontrollers
• Manufacturer: ZiLOG Semiconductor

General-Purpose Input/Output
GPIO Port Availability by Device
Architecture
GPIO Alternate Functions
PS022517-0508
Z8 Encore! XP
for General-Purpose Input/Output (GPIO) operations. Each port consists Control and Data
Registers. The GPIO Control Registers are used to determine data direction, open-drain,
output drive current, programmable pull-ups, Stop Mode Recovery functionality, and
alternate pin functions. Each port pin is individually programmable. Ports A and C support
5 V-tolerant inputs.
Table 11
Table 11. Port Availability by Device and Package Type
Figure 8
ability to accommodate alternate functions, variable port current drive strength, and pro-
grammable pull-up.
Many of the GPIO port pins are used as both general-purpose I/O and to provide access to
on-chip peripheral functions such as timers and serial communication devices. The
Port A–C Alternate Function sub-registers configure these pins for either general-purpose
I/O or alternate function operation. When a pin is configured for alternate function, control
of the port-pin direction (input/output) is passed from the Port A–C Data Direction
registers to the alternate function assigned to this pin.
associated with each port pin.
Devices
Z8X0821, Z8X0811, Z8X0421, Z8X0411 20-pin
Z8X0822, Z8X0812, Z8X0422, Z8X0412 28-pin
displays a simplified block diagram of a GPIO port pin. It does not display the
lists the port pins available with each device and package type.
®
F0822 Series products support a maximum of 19 port pins (Ports A–C)
Package
Table 12
Z8 Encore! XP
Port A
[7:0]
[7:0]
General-Purpose Input/Output
lists the alternate functions
Product Specification
Port B
[1:0]
[4:0]
®
F0822 Series
Port C
[5:0]
[0]
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