MC68HC08AS32 Datasheet, PDF (185/394 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

15.3 Port A
Input/Output (I/O) Ports
Port A
Port A is an 8-bit general-purpose bidirectional I/O port.
15.3.1 Port A Data Register
The port A data register contains a data latch for each of the eight
port A pins.
Address: $0000
Bit 7
6
5
4
3
2
1
Bit 0
Read:
PTA7 PTA6 PTA5 PTA4 PTA3 PTA2 PTA1 PTA0
Write:
Reset:
Unaffected by Reset
Figure 15-1. Port A Data Register (PTA)
PTA[7:0] — Port A Data Bits
These read/write bits are software programmable. Data direction of
each port A pin is under the control of the corresponding bit in data
direction register A. Reset has no effect on port A data.
MC68HC08AS32 — Rev. 3.0
MOTOROLA
Input/Output (I/O) Ports
Advance Information
185