HD64F2357F20V Datasheet, PDF (336/1049 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-chip Microcomputer H8S Family / H8S/2300 Series

9.8.4 MOS Input Pull-Up Function (On-Chip ROM Version Only)
Port A has a on-chip 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 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.
Note: * Manual reset is only supported in the H8S/2357 ZTAT.
Table 9-14 MOS Input Pull-Up States (Port A)
Modes
Power-On Hardware
Reset
Standby Mode
6, 7
PA₇ to PA₀ OFF
4, 5
PA₇ to PA₅
PA₄ to PA₀
Legend:
OFF: MOS input pull-up is always off.
ON/OFF: On when PADDR = 0 and PAPCR = 1; otherwise off.
Manual Software
Reset* Standby Mode
ON/OFF
ON/OFF
OFF
In Other
Operations
Note: * Manual reset is only supported in the H8S/2357 ZTAT.
Rev.6.00 Oct.28.2004 page 306 of 1016
REJ09B0138-0600H