MC908QL4 FREESCALE [Freescale Semiconductor, Inc], MC908QL4 Datasheet - Page 95

• Manufacturer Part Number: MC908QL4
• Description: M68HC08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

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
Freescale Semiconductor
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. Port pulldown is enabled if the corresponding
0 = Keyboard polarity is low level and/or falling edge. Port pullup is enabled if the corresponding
PTAPUE bit is set.
PTAPUE bit is set.
Reset:
Reset:
Read:
Write:
Read:
Write:
KBIEx bit does not automatically enable the internal pullup/pulldown
device. Internal pullup/pulldown device is selected using the corresponding
PTAPUEx bit. Refer to PTAPUE bit description, see
Pullup/Down Enable
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
Register.
MC68HC908QL4 Data Sheet, Rev. 7
KBIE5
KBIP5
5
0
5
0
Chapter 4 Auto Wakeup Module (AWU)
KBIE4
KBIP4
NOTE
4
0
4
0
KBIE3
KBIP3
3
0
3
0
KBIE2
KBIP2
12.3.3 Port A Input
2
0
2
0
KBIE1
KBIP1
1
0
1
0
KBIE0
KBIP0
Bit 0
Bit 0
0
0
Registers
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