HD64F38602R Datasheet, PDF (158/552 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Section 8 I/O Ports
8.2.3 Port Pull-Up Control Register 3 (PUCR3)
PUCR3 controls the pull-up MOS of the port 3 pins in bit units.
Initial
Bit
Bit Name Value R/W
7 to 3 


2
PUCR32 0
R/W
1
PUCR31 0
R/W
0
PUCR30 0
R/W
Description
Reserved
The read value is undefined. These bits cannot be
modified.
When a PCR3 bit is cleared to 0, setting the
corresponding PUCR3 bit to 1 turns on the pull-up MOS
for the corresponding pin, while clearing the bit to 0
turns off the pull-up MOS.
8.2.4 Port Mode Register 3 (PMR3)
PMR3 controls the selection of functions for port 3 pins.
Initial
Bit
Bit Name Value R/W
7 to 1 


0
VCref
0
R/W
Description
Reserved
The read value is undefined. These bits cannot be
modified.
P30/SCK3/VCref Pin Function Switch
0: P30 and SCK3 I/O pin
1: Comparator reference voltage (VCref) pin
Rev. 3.00 May 15, 2007 Page 126 of 516
REJ09B0152-0300