MC68HC908MR8 Datasheet, PDF (281/372 Pages) Motorola, Inc – Microcontrollers

14.3 Port A
Input/Output (I/O) Ports
Port A
Port A is a 7-bit, general-purpose, bidirectional I/O port.
14.3.1 Port A Data Register
The port A data register (PTA) contains a data latch for each of the eight
port A pins.
Ad-
dress:
$0000
Bit 7
6
5
4
3
2
1
Read:
Write:
PTA6 PTA5 PTA4 PTA3 PTA2 PTA1
Reset:
Unaffected by reset
= Unimplemented
Figure 14-2. Port A Data Register (PTA)
Bit 0
PTA0
PTA[6:0] — 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.
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
Input/Output (I/O) Ports
Technical Data
281