Mos Input Pull-Up Function - Hitachi H8S/2646 Hardware Manual

9.11.4

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.
In mode 7, if a pin is in the input state in accordance with the settings in PDDDR and LPCR,
setting the corresponding PDPCR bit to 1 turns on the MOS input pull-up for that pin.
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 9-24 summarizes the MOS input pull-up states.
Table 9-24 MOS Input Pull-Up States (Port D)
Modes
4 to 6
7
Legend:
OFF: MOS input pull-up is always off.
ON/OFF: On when PDDDR = 0, PDPCR = 1, and the pin is not used as a segment driver;
otherwise off.
Hardware
Reset Standby Mode
OFF OFF
Software In Other
Standby Mode Operations
OFF OFF
ON/OFF ON/OFF
275