MC68HC08AZ60ACFU MOTOROLA [Motorola, Inc], MC68HC08AZ60ACFU Datasheet - Page 401

• Manufacturer Part Number: MC68HC08AZ60ACFU
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

22.8 I/O Registers
22.8.1 Keyboard Status and Control Register
MC68HC08AZ60A — Rev 0.0
MOTOROLA
Address: $001A
The following registers control and monitor operation of the keyboard
module:
The keyboard status and control register:
Bits 7–4 — Not used
KEYF — Keyboard Flag Bit
Reset:
Read:
Write:
Figure 22-3. Keyboard Status and Control Register (KBSCR)
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These read-only bits always read as logic 0s.
This read-only bit is set when a keyboard interrupt is pending. Reset
clears the KEYF bit.
1 = Keyboard interrupt pending
0 = No keyboard interrupt pending
Keyboard status and control register (KBSCR)
Keyboard interrupt enable register (KBIER)
Flags keyboard interrupt requests
Acknowledges keyboard interrupt requests
Masks keyboard interrupt requests
Controls keyboard interrupt triggering sensitivity
Bit 7
0
0
Keyboard Module (KBD)
= Unimplemented
6
0
0
5
0
0
4
0
0
KEYF
3
0
ACKK
2
0
0
Keyboard Module (KBD)
Advance Information
IMASKK
1
0
I/O Registers
MODEK
Bit 0
0
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