HD6433682 ETC, HD6433682 Datasheet - Page 152

• Manufacturer Part Number: HD6433682
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
• Manufacturer: ETC

9.4.4
PUCR5 controls the pull-up MOS in bit units of the pins set as the input ports.
9.4.5
The correspondence between the register specification and the port functions is shown below.
P57/SCL pin
Legend X: Don't care.
SCL performs the NMOS open-drain output, that enables a direct bus drive.
P56/SDA pin
Legend X: Don't care.
Rev. 3.00, 05/03, page 122 of 464
Register
Bit Name
Setting Value 0
Register
Bit Name
Setting Value 0
Bit
7, 6
5
4
3
2
1
0
Bit Name
PUCR55
PUCR54
PUCR53
PUCR52
PUCR51
PUCR50
Port Pull-Up Control Register 5 (PUCR5)
Pin Functions
ICCR1
ICCR1
ICE
1
ICE
1
Initial
Value
All 0
0
0
0
0
0
0
PCR5
1
X
PCR5
1
X
PCR57
0
PCR56
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
P57 output pin
SCL I/O pin
P56 output pin
SDA I/O pin
Pin Function
P57 input pin
Pin Function
P56 input pin
Description
Reserved
These bits are always read as 0.
Only bits for which PCR5 is cleared are valid. The pull-up
MOS of the corresponding pins enter the on-state when
these bits are set to 1, while they enter the off-state when
these bits are cleared to 0.