D12320VF25V Datasheet, PDF (304/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 8 I/O Ports
8.8.4 MOS Input Pull-Up Function
Port C has a built-in MOS input pull-up function that can be controlled by software. This MOS
input pull-up function can be used in modes 6 and 7, and can be specified as on or off on an
individual bit basis.
When PCDDR bits are cleared to 0 in mode 6 or 7, setting the corresponding PCPCR bits to 1
turns on the MOS input pull-up for that pins.
The MOS input pull-up function is in the off state after a reset, and in hardware standby mode.
The prior state is retained in software standby mode.
Table 8.14 summarizes the MOS input pull-up states.
Table 8.14 MOS Input Pull-Up States (Port C)
Modes
Reset
Hardware
Standby Mode
Software
Standby Mode
4, 5
OFF
OFF
OFF
6, 7
ON/OFF
Legend:
OFF: MOS input pull-up is always off.
ON/OFF: On when PCDDR = 0 and PCPCR = 1; otherwise off.
In Other
Operations
OFF
ON/OFF
Rev.7.00 Feb. 14, 2007 page 270 of 1108
REJ09B0089-0700