mc68hc908qb4 Freescale Semiconductor, Inc, mc68hc908qb4 Datasheet - Page 88
mc68hc908qb4
Manufacturer Part Number
mc68hc908qb4
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908QB4.pdf
(236 pages)
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Keyboard Interrupt Module (KBI)
9.8.2 Keyboard Interrupt Enable Register (KBIER)
KBIER enables or disables each keyboard interrupt pin.
KBIE5–KBIE0 — Keyboard Interrupt Enable Bits
9.8.3 Keyboard Interrupt Polarity Register (KBIPR)
KBIPR determines the polarity of the enabled keyboard interrupt pin and enables the appropriate pullup
or pulldown device.
KBIP5–KBIP0 — Keyboard Interrupt Polarity Bits
88
Each of these read/write bits enables the corresponding keyboard interrupt pin to latch KBI interrupt
requests.
Each of these read/write bits enables the polarity of the keyboard interrupt detection.
1 = KBIx pin enabled as keyboard interrupt pin
0 = KBIx pin not enabled as keyboard interrupt pin
1 = Keyboard polarity is high level and/or rising edge
0 = Keyboard polarity is low level and/or falling edge
Reset:
Reset:
Read:
Write:
Read:
Write:
AWUIE bit is not used in conjunction with the keyboard interrupt feature. To
see a description of this bit, see
Figure 9-5. Keyboard Interrupt Polarity Register (KBIPR)
Bit 7
Bit 7
Figure 9-4. Keyboard Interrupt Enable Register (KBIER)
0
0
0
0
= Unimplemented
= Unimplemented
AWUIE
6
0
6
0
0
MC68HC908QB8 Data Sheet, Rev. 2
KBIP5
KBIE5
5
0
5
0
Chapter 4 Auto Wakeup Module (AWU)
KBIE4
KBIP4
NOTE
0
0
4
4
KBIE3
KBIP3
3
0
3
0
KBIE2
KBIP2
2
0
2
0
KBIE1
KBIP1
1
0
1
0
Freescale Semiconductor
KBIE0
KBIP0
Bit 0
Bit 0
0
0
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