HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 265
HD6412340
Manufacturer Part Number
HD6412340
Description
H8S/2345 F-ZTAT Hardware Manual
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet
1.HD6412340.pdf
(907 pages)
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8.7.4
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 8.12 summarizes the MOS input pull-up states.
Table 8.12 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.
Note: * Modes 1 to 3 are not available on the F-ZTAT version.
248
Modes 2, 3, 6, and 7 are not available on the ROMless version.
MOS Input Pull-Up Function
: 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
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