z8f0813 ZiLOG Semiconductor, z8f0813 Datasheet - Page 54

• Manufacturer Part Number: z8f0813
• Description: High-performance 8-bit Microcontrollers
• Manufacturer: ZiLOG Semiconductor

Table 18. Port A–C GPIO Address Registers (PxADDR)
BITS
FIELD
RESET
R/W
ADDR
PS024314-0308
PADDR[7:0]
00H
01H
02H
03H
04H
05H
06H
07H
08H
09H–FFH
Port A–C Address Registers
Port A–C Control Registers
R/W
7
The Port A–C Address registers select the GPIO Port functionality accessible through the
Port A–C Control registers. The Port A–C Address and Control registers combine to
provide access to all GPIO Port controls
PADDR[7:0]—Port Address
The Port Address selects one of the sub-registers accessible through the Port Control
register.
The Port A–C Control registers set the GPIO port operation. The value in the
corresponding Port A–C Address register determines which sub-register is read from or
written to by a Port A–C Control register transaction
Port Control Sub-register Accessible Using the Port A–C Control Registers
No function. Provides some protection against accidental Port reconfiguration.
Data Direction.
Alternate Function.
Output Control (Open-Drain).
High Drive Enable.
Stop Mode Recovery Source Enable.
Pull-up Enable.
Alternate Function Set 1.
Alternate Function Set 2.
No function.
R/W
6
R/W
5
FD0H, FD4H, FD8H
R/W
4
PADDR[7:0]
00H
(Table
R/W
3
18).
(Table
Z8 Encore! XP
R/W
2
19).
General-Purpose Input/Output
Product Specification
R/W
1
®
F0823 Series
R/W
0
44