MC68HC08AZ60ACFU MOTOROLA [Motorola, Inc], MC68HC08AZ60ACFU Datasheet - Page 402
MC68HC08AZ60ACFU
Manufacturer Part Number
MC68HC08AZ60ACFU
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC08AZ60ACFU.pdf
(480 pages)
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Keyboard Module (KBD)
22.8.2 Keyboard Interrupt Enable Register
Advance Information
402
Address: $001B
ACKK — Keyboard Acknowledge Bit
IMASKK — Keyboard Interrupt Mask Bit
MODEK — Keyboard Triggering Sensitivity Bit
The keyboard interrupt enable register enables or disables each port G
and each port H pin to operate as a keyboard interrupt pin.
KBIE4–KBIE0 — Keyboard Interrupt Enable Bits
Reset:
Read:
Write:
Writing a logic 1 to this write-only bit clears the keyboard interrupt
request. ACKK always reads as logic 0. Reset clears ACKK.
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.
This read/write bit controls the triggering sensitivity of the keyboard
interrupt pins. Reset clears MODEK.
Each of these read/write bits enables the corresponding keyboard
interrupt pin to latch interrupt requests. Reset clears the keyboard
interrupt enable register.
Figure 22-4. Keyboard Interrupt Enable Register (KBIER)
1 = Keyboard interrupt requests masked
0 = Keyboard interrupt requests not masked
1 = Keyboard interrupt requests on falling edges and low levels
0 = Keyboard interrupt requests on falling edges only
1 = Port pin enabled as keyboard interrupt pin
0 = Port pin not enabled as keyboard interrupt pin
Bit 7
0
0
Keyboard Module (KBD)
= Unimplemented
6
0
0
5
0
0
KBIE4
4
0
KBIE3
3
0
MC68HC08AZ60A — Rev 0.0
KBIE2
2
0
KBIE1
1
0
MOTOROLA
KBIE0
Bit 0
0
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