MC68HC08AS32 Datasheet, PDF (154/280 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

Table 11-6. Port F Pin Functions
Accesses to
DDRF
PTF
I/O Pin
DDRF
Bit
Bit
Mode
Read/Write
0
X
Input, Hi-Z DDRF[3:0]
1
X
Output
DDRF[3:0]
X = Don’t Care
Hi-Z = High Impedance
1. Writing affects data register, but does not affect input.
Accesses to PTF
Read
Pin
PTF[3:0]
Write
PTF[3:0]⁽¹⁾
PTF[3:0]
Data Sheet
154
MC68HC08AS32 — Rev. 4.1
Freescale Semiconductor