Z8F4822AR020SG Datasheet, PDF (64/323 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F64xx Series
Product Specification
44
Port A–H High Drive Enable Subregisters
The Port A–H High Drive Enable Subregister, shown in Table 19, is accessed through the
Port A–H Control Register by writing 04H to the Port A–H Address Register. Setting the
bits in the Port A–H High Drive Enable subregisters to 1 configures the specified port pins
for high-current output drive operation. The Port A–H High Drive Enable Subregister
affects the pins directly and, as a result, alternate functions are also affected.
Table 19. Port A–H High Drive Enable Subregisters
Bit
7
6
5
4
3
2
1
0
Field
PHDE7 PHDE6 PHDE5 PHDE4 PHDE3 PHDE2 PHDE1 PHDE0
RESET
0
R/W
R/W
Address
See note.
Note: If a 04H exists in the Port A–H Address Register, it is accessible through the Port A–H Control Register.
Bit
Description
[7:0]
PHDEx
Port High Drive Enabled
0 = The Port pin is configured for standard output current drive.
1 = The Port pin is configured for high output current drive.
Note: x indicates register bits in the range [7:0].
PS019924-0113
PRELIMINARY
GPIO Control Register Definitions