MC68HC908AZ32ACFU MOTOROLA [Motorola, Inc], MC68HC908AZ32ACFU Datasheet - Page 388

• Manufacturer Part Number: MC68HC908AZ32ACFU
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

I/O Ports
23.10 Port H
23.10.1 Port H Data Register
Advance Information
388
Function:
Alternate
Address:
Port H is a 2-bit special function port that shares all of its pins with the
keyboard interrupt module (KBD). Note that Port H is only available on
64-pin package options.
The port H data register contains a data latch for each of the two port H
pins.
PTH[1:0] — Port H Data Bits
KBD[4:3] — Keyboard Wake-up pins
Reset:
Read:
Write:
Freescale Semiconductor, Inc.
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 PTH[1:0].
The keyboard interrupt enable bits, KBIE[4:3], in the keyboard
interrupt control register, enable the port H pins as external interrupt
pins (See
For More Information On This Product,
$000B
Bit 7
R
R
0
Go to: www.freescale.com
Figure 23-23. Port H Data Register (PTH)
Section 22. Keyboard Module
= Reserved
R
6
0
I/O Ports
R
5
0
Unaffected by Reset
R
4
0
R
3
0
(KBD)).
68HC908AZ32A — Rev 0.0
R
2
0
PTH1
KBD4
1
MOTOROLA
PTH0
KBD3
Bit 0