HD64336901G Renesas Technology, HD64336901G Datasheet - Page 147

• Manufacturer Part Number: HD64336901G
• Description: (HD64xxx Series) 16-BIT MICROCONTROLLER
• Manufacturer: Renesas Technology

9.3.3
PDR5 is a general I/O port data register of port 5.
9.3.4
PUCR5 controls the pull-up MOS in bit units of the pins set as the input ports.
Bit
7
6
5
4 to 0
Bit
7, 6
5
4 to 0
Bit Name
P57
P56
P55
Bit Name
PUCR55
Port Data Register 5 (PDR5)
Port Pull-Up Control Register 5 (PUCR5)
Initial
Value
0
0
0
All 1
Initial
Value
All 0
0
All 0
R/W
R/W
R/W
R/W
R/W
R/W
Description
These bits store output data for port 5 pins.
If PDR5 is read while PCR5 bits are set to 1, the value
stored in PDR5 are read. If PDR5 is read while PCR5 bits
are cleared to 0, the pin states are read regardless of the
value stored in PDR5.
Reserved
These bits are always read as 1.
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 this bit is set to 1, while they enter the off-
state when this bit is cleared to 0.
Reserved
These bits are always read as 0.
Rev. 1.00, 11/03, page 119 of 376