HD6432351 Datasheet, PDF (382/989 Pages) Renesas Technology Corp – The H8S/2000 CPU has an internal 32-bit architecture, is provided with sixteen 16-bit general registers and a concise

9.8.4 MOS Input Pull-Up Function [H8S/2351 Only]
Port A has a built-in MOS input pull-up function that can be controlled by software. This MOS
input pull-up function can be used by pins PA₇ to PA₅ in modes 4 and 5, and by all pins in modes
1, 2, 3, 6, and 7. MOS input pull-up can be specified as on or off on an individual bit basis.
When a PADDR bit is cleared to 0, setting the corresponding PAPCR 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 9-14 summarizes the MOS input pull-up states.
Table 9-14 MOS Input Pull-Up States (Port A)
Modes
Power-On Hardware
Manual Software
Reset
Standby Mode Reset Standby Mode
1 to 3, 6, 7 PA₇ to PA₀ OFF
ON/OFF
4, 5
PA₇ to PA₅
ON/OFF
PA₄ to PA₀
OFF
Legend:
OFF : MOS input pull-up is always off.
ON/OFF : On when PADDR = 0 and PAPCR = 1; otherwise off.
In Other
Operations
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