MC68HC908GR4 MOTOROLA [Motorola, Inc], MC68HC908GR4 Datasheet - Page 181

• Manufacturer Part Number: MC68HC908GR4
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

13.8 I/O Registers
13.8.1 Keyboard Status and Control Register
MC68HC908GR8 — Rev 4.0
MOTOROLA
Address: $001A
These registers control and monitor operation of the keyboard module:
The keyboard status and control register:
Bits 7–4 — Not used
KEYF — Keyboard Flag Bit
Figure 13-3. Keyboard Status and Control Register (INTKBSCR)
Reset:
Read:
Write:
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.
Freescale Semiconductor, Inc.
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1 = Keyboard interrupt pending
0 = No keyboard interrupt pending
Keyboard status and control register (INTKBSCR)
Keyboard interrupt enable register (INTKBIER)
Flags keyboard interrupt requests
Acknowledges keyboard interrupt requests
Masks keyboard interrupt requests
Controls keyboard interrupt triggering sensitivity
Bit 7
0
0
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Keyboard Interrupt (KBI)
= Unimplemented
6
0
0
5
0
0
4
0
0
KEYF
3
0
ACKK
2
0
0
Keyboard Interrupt (KBI)
IMASKK
1
0
Technical Data
I/O Registers
MODEK
Bit 0
0
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