z8f1621 ZiLOG Semiconductor, z8f1621 Datasheet - Page 72

• Manufacturer Part Number: z8f1621
• Description: High Performance 8-bit Microcontrollers
• Manufacturer: ZiLOG Semiconductor

Table 15. Port A–H Control Registers (PxCTL)
PS019921-0308
BITS
FIELD
RESET
R/W
ADDR
Port A–H Control Registers
7
PADDR[7:0]—Port Address
The Port Address selects one of the sub-registers accessible through the Port Control reg-
ister.
The Port A–H Control registers set the GPIO port operation. The value in the correspond-
ing Port A–H Address register determines the control sub-registers accessible using the
Port A–H Control register
PCTL[7:0]—Port Control
The Port Control register provides access to all sub-registers that configure the GPIO Port
operation.
PADDR[7:0]
00H
01H
02H
03H
04H
05H
06H-FFH
6
FD1H, FD5H, FD9H, FDDH, FE1H, FE5H, FE9H, FEDH
Port Control sub-register accessible using the Port A
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
No function
5
(Table
15).
4
PCTL
R/W
00H
3
Z8 Encore! XP
2
Product Specification
General-Purpose I/O
1
®
–
F64XX Series
H Control
0
58