MC68HC08AZ60 Datasheet, PDF (362/452 Pages) Motorola, Inc – Advance Information

Freescale Semiconductor, Inc.
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
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 4. Keyboard Interrupt Enable Register (KBIER)
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 = PDx pin enabled as keyboard interrupt pin
0 = PDx pin not enabled as keyboard interrupt pin
MC68HC08AZ60 — Rev 1.0
362
Keyboard Module (KBD)
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8-kbd
MOTOROLA