Port Pull-Up Control Register 5(Pucr5); Pin Functions - Hitachi H8/3672 Series Hardware Manual

9.3.4

Port Pull-up Control Register 5(PUCR5)

PUCR5 controls the pull-up MOS in bit units of the pins set as the input ports.
Bit Bit Name Initial Value R/W
−
7 0
−
6 0
5 PUCR55 0
4 PUCR54 0
3 PUCR53 0
2 PUCR52 0
1
PUCR51 0
0 PUCR50 0
9.3.5

Pin Functions

The correspondence between the register specification and the port functions is shown below.
P57 pin
Register PMR5
Bit Name POF7
Setting Value X
0
1
Legend X: Don't care.
P56 pin
Register PMR5
Bit Name POF6
Setting Value X
0
1
Legend X: Don't care.
Description
−
Reserved
−
These bits are always read as 0 and cannot be modified.
R/W Only bits for which PCR5 is cleared are valid. The pull-up
MOS of the corresponding pins enter the on-state when
R/W
these bits are set to 1, while they enter the off-state when
R/W
these bits are cleared to 0.
R/W
R/W
R/W
PCR5
PCR57 Pin Function
0 P57 input pin
1 CMOS output
1 NMOS open-drain output
PCR5
PCR56 Pin Function
0 P56 input pin
1 CMOS output
1 NMOS open-drain output
Rev. 1.0, 03/01, page 99 of 280