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9.6.4
Port A Pull-Up MOS Control Register (PAPCR)
PAPCR is an 8-bit register that controls the input pull-up MOS function.
Bit
Bit Name
Initial Value
R/W
Description
7 to
4
Undefined
Reserved
These bits are read as an undefined value and
cannot be modified.
3 PA3PCR 0
R/W
2 PA2PCR 0
R/W
1 PA1PCR 0
R/W
0 PA0PCR 0
R/W
When a pin is specified as an input port, setting the
corresponding bit to 1 turns on the input pull-up MOS
for that pin.
9.6.5
Port A Open-Drain Control Register (PAODR)
PAODR is an 8-bit readable/writable register that specifies the output type of port A.
Bit
Bit Name
Initial Value
R/W
Description
7 to
4
Undefined
Reserved
These bits are read as an undefined value and
cannot be modified.
3 PA3ODR 0
R/W
2 PA2ODR 0
R/W
1 PA1ODR 0
R/W
0 PA0ODR 0
R/W
When a pin is specified as an output port, setting the
corresponding bit to 1 specifies pin output to open-
drain and the input pull-up MOS to the off state.
Clearing this bit to 0 specifies that to push-pull
output.
Содержание H8S/2627
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