Port A Pull-Up Mos Control Register (Papcr); Port A Open-Drain Control Register (Paodr) - Hitachi H8S/2628 Hardware Manual

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

7 to Undefined
4
3 PA3PCR 0
2 PA2PCR 0
1 PA1PCR 0
0 PA0PCR 0
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

7 to Undefined
4
3 PA3ODR 0
2 PA2ODR 0
1 PA1ODR 0
0 PA0ODR 0
Rev. 1.0, 09/02, page 140 of 568
R/W Description

Reserved
These bits are read as an undefined value and
cannot be modified.
R/W When a pin is specified as an input port, setting the
corresponding bit to 1 turns on the input pull-up MOS
R/W
for that pin.
R/W
R/W
R/W Description

Reserved
These bits are read as an undefined value and
cannot be modified.
R/W When a pin is specified as an output port, setting the
corresponding bit to 1 specifies pin output to open-
R/W
drain and the input pull-up MOS to the off state.
R/W
Clearing this bit to 0 specifies that to push-pull
output.
R/W