MC68HC08AZ60A Datasheet, PDF (402/480 Pages) Motorola, Inc – Microcontrollers

Keyboard Module (KBD)
ACKK — Keyboard Acknowledge Bit
Writing a logic 1 to this write-only bit clears the keyboard interrupt
request. ACKK always reads as logic 0. Reset clears ACKK.
IMASKK — Keyboard Interrupt Mask Bit
Writing a logic 1 to this read/write bit prevents the output of the
keyboard interrupt mask from generating interrupt requests. Reset
clears the IMASKK bit.
1 = Keyboard interrupt requests masked
0 = Keyboard interrupt requests not masked
MODEK — Keyboard Triggering Sensitivity Bit
This read/write bit controls the triggering sensitivity of the keyboard
interrupt pins. Reset clears MODEK.
1 = Keyboard interrupt requests on falling edges and low levels
0 = Keyboard interrupt requests on falling edges only
22.8.2 Keyboard Interrupt Enable Register
The keyboard interrupt enable register enables or disables each port G
and each port H pin to operate as a keyboard interrupt pin.
Address: $001B
Bit 7
6
5
4
3
2
1
Bit 0
Read: 0
0
0
KBIE4 KBIE3 KBIE2 KBIE1 KBIE0
Write:
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
Figure 22-4. Keyboard Interrupt Enable Register (KBIER)
Advance Information
402
KBIE4–KBIE0 — Keyboard Interrupt Enable Bits
Each of these read/write bits enables the corresponding keyboard
interrupt pin to latch interrupt requests. Reset clears the keyboard
interrupt enable register.
1 = Port pin enabled as keyboard interrupt pin
0 = Port pin not enabled as keyboard interrupt pin
Keyboard Module (KBD)
MC68HC08AZ60A — Rev 0.0
MOTOROLA