MC68HC708XL36 FREESCALE [Freescale Semiconductor, Inc], MC68HC708XL36 Datasheet - Page 328

• Manufacturer Part Number: MC68HC708XL36
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

KBI
Keyboard
Interrupt Enable
Register
MC68HC708XL36
328
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 D
pin to operate as a keyboard interrupt pin.
KBIE[7:0] — 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.
Freescale Semiconductor, Inc.
For More Information On This Product,
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 = PDx pin enabled as keyboard interrupt pin
0 = PDx pin not enabled as keyboard interrupt pin
Figure 4. Keyboard Interrupt Enable Register (KBIER)
KBIE7
Bit 7
0
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KBIE6
6
0
KBI
KBIE5
5
0
KBIE4
4
0
KBIE3
3
0
KBIE2
2
0
KBIE1
1
0
MOTOROLA
8-intkbd8_a
KBIE0
Bit 0
0