MC908QT1 FREESCALE [Freescale Semiconductor, Inc], MC908QT1 Datasheet - Page 52

• Manufacturer Part Number: MC908QT1
• Description: Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Auto Wakeup Module (AWU)
Bits 7–4 — Not used
KEYF — Keyboard Flag Bit
ACKK — Keyboard Acknowledge Bit
IMASKK— Keyboard Interrupt Mask Bit
4.6.3 Keyboard Interrupt Enable Register
The keyboard interrupt enable register (KBIER) enables or disables the auto wakeup to operate as a
keyboard/auto wakeup interrupt input.
AWUIE — Auto Wakeup Interrupt Enable Bit
52
These read-only bits always read as 0s.
This read-only bit is set when a keyboard interrupt is pending on port A or auto wakeup. Reset clears
the KEYF bit.
Writing a 1 to this write-only bit clears the keyboard/auto wakeup interrupt request on port A and auto
wakeup logic. ACKK always reads as 0.Reset clears ACKK.
Writing a 1 to this read/write bit prevents the output of the keyboard interrupt mask from generating
interrupt requests on port A or auto wakeup. Reset clears the IMASKK bit.
This read/write bit enables the auto wakeup interrupt input to latch interrupt requests. Reset clears
AWUIE.
1 = Keyboard/auto wakeup interrupt pending
0 = No keyboard/auto wakeup interrupt pending
1 = Keyboard/auto wakeup interrupt requests masked
0 = Keyboard/auto wakeup interrupt requests not masked
1 = Auto wakeup enabled as interrupt input
0 = Auto wakeup not enabled as interrupt input
Address: $001B
MODEK is not used in conjuction with the auto wakeup feature. To see a
description of this bit, see
KBIE5–KBIE0 bits are not used in conjuction with the auto wakeup feature.
To see a description of these bits, see
Register.
Reset:
Read:
Write:
Figure 4-4. Keyboard Interrupt Enable Register (KBIER)
Bit 7
0
0
= Unimplemented
AWUIE
MC68HC908QY/QT Family Data Sheet, Rev. 5
6
0
KBIE5
9.7.1 Keyboard Status and Control
5
0
NOTE
NOTE
KBIE4
4
0
9.7.2 Keyboard Interrupt Enable
KBIE3
3
0
KBIE2
2
0
Register.
KBIE1
1
0
Freescale Semiconductor
KBIE0
Bit 0
0