Mos Input Pull-Up Function (On-Chip Rom Version Only) - Renesas H8S Series Hardware Manual

9.12.4

MOS Input Pull-Up Function (On-Chip ROM Version Only)

Port E has a on-chip MOS input pull-up function that can be controlled by software. This MOS input pull-up function can
be used in modes 4 to 6 when 8-bit bus mode is selected, or in mode 7, and can be specified as on or off on an individual
bit basis.
When a PEDDR bit is cleared to 0 in mode 4, 5, or 6 when 8-bit bus mode is selected, or in mode 7, setting the
corresponding PEPCR 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 9-22 summarizes the MOS input pull-up states.
Note: * Manual reset is only supported in the H8S/2357 ZTAT.
Table 9-22 MOS Input Pull-Up States (Port E)
Modes
7
4 to 6
Legend:
OFF: MOS input pull-up is always off.
ON/OFF: On when PEDDR = 0 and PEPCR = 1; otherwise off.
Note: * Manual reset is only supported in the H8S/2357 ZTAT.
Rev.6.00 Oct.28.2004 page 326 of 1016
REJ09B0138-0600H
Power-On
Reset
OFF
8-bit bus
16-bit bus
Hardware Manual
Standby Mode Reset*
ON/OFF
OFF
Software In Other
Standby Mode Operations