MC68HC908QT1VDW Freescale Semiconductor, MC68HC908QT1VDW Datasheet - Page 52

• Manufacturer Part Number: MC68HC908QT1VDW
• Description: 8-bit Microcontrollers - MCU 8 Bit 8MHz
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC908QT1VDW

• Product Category: 8-bit Microcontrollers - MCU
• Core: HC08
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Program Memory Size: 1.5 KB
• Data Ram Size: 128 B
• On-chip Adc: No
• Operating Supply Voltage: 3.3 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: SOIC-8
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 6
• Number Of Timers: 2
• Program Memory Type: Flash
• Factory Pack Quantity: 96
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 2.7 V

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. 6
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