HD6432646 Hitachi, HD6432646 Datasheet - Page 304

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

9.10.4
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 the LCD driver LPCR
and PCDDR, the MOS input pull-up is set to ON.
The MOS input pull-up function is in the off state after a reset, and in hardware standby mode.
The prior state is retained by a manual reset or in software standby mode.
Table 9-21 summarizes the MOS input pull-up states.
Table 9-21 MOS Input Pull-Up States (Port C)
Pin States
Address output
Other than above
Legend:
OFF: MOS input pull-up is always off.
ON/OFF: On when PCDDR = 0 and PCPCR = 1; otherwise off.
270
MOS Input Pull-Up Function
Reset
OFF
Hardware
Standby Mode
OFF
Software
Standby Mode
OFF
ON/OFF
In Other
Operations
OFF
ON/OFF