Datasheet

Section 8 I/O Ports
Rev.7.00 Feb. 14, 2007 page 276 of 1108
REJ09B0089-0700
8.9.4 MOS Input Pull-Up Function
Port D 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 mode 7, and can be specified as on or off on an individual bit
basis.
When PDDDR bits are cleared to 0 in mode 7, setting the corresponding PDPCR 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 8.16 summarizes the MOS input pull-up states.
Table 8.16 MOS Input Pull-Up States (Port D)
Modes Reset
Hardware
Standby Mode
Software
Standby Mode
In Other
Operations
4 to 6 OFF OFF OFF OFF
7 ON/OFF ON/OFF
Legend:
OFF: MOS input pull-up is always off.
ON/OFF: On when PDDDR = 0 and PDPCR = 1; otherwise off.