HD6412350 Hitachi, HD6412350 Datasheet - Page 388

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

9.9.4
Port B 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 2, 3, 6, and 7, and can be specified as on or off on an
individual bit basis.
When a PBDDR bit is cleared to 0 in mode 2, 3, 6, or 7, setting the corresponding PBPCR 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 power-on reset, and in hardware standby
mode. The prior state is retained after a manual reset, and in software standby mode.
Table 9-16 summarizes the MOS input pull-up states.
Table 9-16 MOS Input Pull-Up States (Port B)
Modes
1, 4, 5
2, 3, 6, 7
Legend:
OFF
ON/OFF : On when PBDDR = 0 and PBPCR = 1; otherwise off.
368
MOS Input Pull-Up Function [H8S/2351 Only]
: MOS input pull-up is always off.
Power-On
Reset
OFF
Hardware
Standby Mode
Manual
Reset
OFF
ON/OFF
Software
Standby Mode
In Other
Operations