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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
4, 5
6, 7
Legend:
OFF:
MOS input pull-up is always off.
ON/OFF: On when PCDDR = 0 and PCPCR = 1; otherwise off.
Hardware
Reset
Standby Mode
OFF
OFF
Software
In Other
Standby Mode
Operations
OFF
OFF
ON/OFF
ON/OFF
Rev. 5.00, 12/03, page 265 of 1088
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