Z8FMC16100 Datasheet, PDF (63/402 Pages) Zilog, Inc. – Z8 Encore-R Motor Control Flash MCUs

Z8FMC16100 Series Flash MCU
Product Specification
41
Table 16. Port Control Subregisters by Port Address
Port
Address
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah–FFh
Port Control Subregisters
No function; provides some protection against accidental port
reconfiguration.
Data direction.
Alternate Function 0
Output Control (open-drain).
High Drive Enable.
Stop-mode recovery source enable.
Pull-up enable.
Alternate Function 1—ports A and B only.
Interrupt Edge Select - Port A and Port C only
Port Interrupt Select Register - Port A only
No Function
Port A–C Control Registers
The Port A–C Control registers set the GPIO port operation. The value in the correspond-
ing Port A–C Address register determines the control subregisters accessible using the
Port A–C Control registers, shown in Table 17. The Port Control registers provide access
to all subregisters that configure GPIO port operation.
Table 17. Port A–C Control Registers (PxCTL)
BITS
7
6
5
4
3
2
1
0
FIELD
PCTL
RESET
00H
R/W
R/W
ADDR
FD1H, FD5H, FD9H
Port A–C Data Direction Subregisters
The Port A–C Data Direction subregisters are accessed through the Port A–C Control reg-
isters by writing 01h to the Port A–C Address registers. See Table 18.
PS024604-1005
PRELIMINARY
Port A–C Control Registers