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10.9.4
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.
In modes 6 and 7, when PCPCR is set to 1 in the input state by setting of DACR and PCDDR, the
MOS input pull-up is set to ON.
The MOS input pull-up function is in the off state after a power-on reset, and in hardware standby
mode. The prior state is retained by a manual reset or in software standby mode.
Table 10-15 summarizes the MOS input pull-up states.
Table 10-15 MOS Input Pull-Up States (Port C)
Pin States
Address output or
PWM output
Other than above
Legend:
OFF
: MOS input pull-up is always off.
ON/OFF : On when PCDDR = 0 and PCPCR = 1; otherwise off.
Power-On
Hardware
Reset
Standby Mode
OFF
OFF
Manual
Software
Reset
Standby Mode
OFF
OFF
ON/OFF
ON/OFF
In Other
Operations
OFF
ON/OFF
381
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