MC68HC08AZ60A Datasheet, PDF (340/480 Pages) Motorola, Inc – Microcontrollers

I/O Ports
20.10 Port H
Port H is a 2-bit special function port that shares all of its pins with the
Keyboard Interrupt Module (KBD).
20.10.1 Port H Data Register (PTH)
The port H data register contains a data latch for each of the two port H
pins.
Bit 7
6
5
4
3
2
Read: 0
0
0
0
0
0
PTH $000B
Write:
Reset:
Unaffected by reset
Alternate Function
= Unimplemented
Figure 20-22. Port H Data Register (PTH)
1
Bit 0
PTH1 PTH0
KBD4 KBD3
PTH[1:0] — Port H Data Bits
These read/write bits are software-programmable. Data direction of
each port H pin is under the control of the corresponding bit in data
direction register H. Reset has no effect on port G data.
KBD[4:3] — Keyboard Wakeup Pins
The keyboard interrupt enable bits, KBIE[4:3], in the keyboard
interrupt control register (KBICR), enable the port H pins as external
interrupt pins. See Keyboard Module (KBD).
Advance Information
340
I/O Ports
MC68HC08AZ60A — Rev 0.0
MOTOROLA