HD6432646 Hitachi, HD6432646 Datasheet - Page 309

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

9.11.4
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:
ON/OFF: On when PDDDR = 0, PDPCR = 1, and the pin is not used as a segment driver;
MOS Input Pull-Up Function
MOS input pull-up is always off.
otherwise off.
Reset
OFF
Hardware
Standby Mode
OFF
Software
Standby Mode
OFF
ON/OFF
In Other
Operations
OFF
ON/OFF
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