MC912DG128A Motorola, MC912DG128A Datasheet - Page 131

• Manufacturer Part Number: MC912DG128A
• Description: Microcontrollers
• Manufacturer: Motorola

KWPJ — Key Wake-up Port J Polarity Register
KWPH — Key Wake-up Port H Polarity Register
5-kwu
MOTOROLA
RESET:
RESET:
KWPH7
KWPJ7
Bit 7
Bit 7
0
0
KWPH6
KWPJ6
6
0
6
0
Read and write anytime. It is best to clear the flags after initializing this
register because changing the polarity of a bit can cause the associated
flag to become set.
KWPJ[7:0] — Key Wake-up Port J Polarity Selects
Read and write anytime. It is best to clear the flags after initializing this
register because changing the polarity of a bit can cause the associated
flag to become set.
KWPH[7:0] — Key Wake-up Port H Polarity Selects
0 = Falling edge on the associated port J pin sets the associated
1 = Rising edge on the associated port J pin sets the associated
0 = Falling edge on the associated port H pin sets the associated
1 = Rising edge on the associated port H pin sets the associated
KWPH5
KWPJ5
5
0
5
0
flag bit in the KWIFJ register and a resistive pull-up device is
connected to associated port J input pin.
flag bit in the KWIFJ register and a resistive pull-down device
is connected to associated port J input pin.
flag bit in the KWIFH register and a resistive pull-up device is
connected to associated port H input pin.
flag bit in the KWIFH register and a resistive pull-down device
is connected to associated port H input pin.
I/O Ports With Key Wake-Up
KWPH4
KWPJ4
4
0
4
0
KWPH3
KWPJ3
3
0
3
0
KWPH2
KWPJ2
2
0
2
0
Key Wake-up and port Registers
KWPH1
KWPJ1
MC68HC912DT128A Rev 2.0
1
0
1
0
I/O Ports With Key Wake-Up
KWPH0
KWPJ0
Bit 0
Bit 0
0
0
$0030
$0031
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