Datasheet

I/O Ports with Key Wake-up
Key Wake-up and port Registers
MC68HC912DT128A — Rev 4.0 Technical Data
MOTOROLA I/O Ports with Key Wake-up 151
Data direction register H is associated with port H and designates each
pin as an input or output. Read and write anytime.
DDRH[7:0] — Data Direction Port H
0 = Associated pin is an input
1 = Associated pin is an output
Read and write anytime.
KWIEJ[7:0] — Key Wake-up Port J Interrupt Enables
0 = Interrupt for the associated bit is disabled
1 = Interrupt for the associated bit is enabled
Read and write anytime.
KWIEH[7:0] — Key Wake-up Port H Interrupt Enables
0 = Interrupt for the associated bit is disabled
1 = Interrupt for the associated bit is enabled
DDRH — Port H Data Direction Register $002B
Bit 7654321Bit 0
DDH7 DDH6 DDH5 DDH4 DDH3 DDH2 DDH1 DDH0
RESET: 0 0 0 0 0 0 0 0
KWIEJ — Key Wake-up Port J Interrupt Enable Register $002C
Bit 7654321Bit 0
KWIEJ7 KWIEJ6 KWIEJ5 KWIEJ4 KWIEJ3 KWIEJ2 KWIEJ1 KWIEJ0
RESET: 0 0 0 0 0 0 0 0
KWIEH — Key Wake-up Port H Interrupt Enable Register $002D
Bit 7654321Bit 0
KWIEH7 KWIEH6 KWIEH5 KWIEH4 KWIEH3 KWIEH2 KWIEH1 KWIEH0
RESET:00000000
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cale Semiconductor,
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