HD6432621 Hitachi, HD6432621 Datasheet - Page 311

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

9.8.4
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.
When a PDDDR bit is cleared to 0 in mode 7, 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 9-17 summarizes the MOS input pull-up states.
Table 9-17 MOS Input Pull-Up States (Port D)
Modes
4 to 6
7
Legend:
OFF
ON/OFF : On when PDDDR = 0 and PDPCR = 1; otherwise off.
MOS Input Pull-Up Function
: MOS input pull-up is always off.
Power-On
Reset
OFF
Hardware
Standby Mode
OFF
Software
Standby Mode
OFF
ON/OFF
In Other
Operations
OFF
ON/OFF
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