XC68HC08KH12 Motorola, XC68HC08KH12 Datasheet - Page 238
XC68HC08KH12
Manufacturer Part Number
XC68HC08KH12
Description
MICROCONTROLLER
Manufacturer
Motorola
Datasheet
1.XC68HC08KH12.pdf
(262 pages)
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Keyboard Interrupt Module (KBI)
15.6.3.2 Port-F Keyboard Interrupt Enable Register
Advance Information
238
Address: $0041
ACKF — Port-F Keyboard Acknowledge Bit
IMASKF — Port-F Keyboard Interrupt Mask Bit
MODEF — Port-F Keyboard Triggering Sensitivity Bit
The port-F keyboard interrupt enable register enables or disables each
port-F pin to operate as a keyboard interrupt pin.
Figure 15-9. Port-F Keyboard Interrupt Enable Register (KBFIER)
KBFIE7–KBFIE0 — Port-F Keyboard Interrupt Enable Bits
Reset:
Read:
Write:
Writing a logic 1 to this write-only bit clears the keyboard interrupt
request on port-F. ACKF always reads as logic 0. Reset clears ACKF.
Writing a logic 1 to this read/write bit prevents the output of the
keyboard interrupt mask from generating interrupt requests on port-F.
Reset clears the IMASKF bit.
This read/write bit controls the triggering sensitivity of the keyboard
interrupt pins on port-F. Reset clears MODEF.
Each of these read/write bits enables the corresponding keyboard
interrupt pin on port-F to latch interrupt requests. Reset clears the
keyboard interrupt enable register.
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 = KBFx pin enabled as keyboard interrupt pin
0 = KBFx pin not enabled as keyboard interrupt pin
KBFIE7
Bit 7
0
Keyboard Interrupt Module (KBI)
KBFIE6
6
0
KBFIE5
5
0
KBFIE4
4
0
KBFIE3
3
0
MC68HC(7)08KH12
KBFIE2
2
0
KBFIE1
1
0
MOTOROLA
—
KBFIE0
Rev. 1.0
Bit 0
0
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