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

Modes 4 and 5: In modes 4 and 5, port C pins are automatically designated as address outputs.
Port C pin functions in modes 4 and 5 are shown in figure 9-18.
9.10.4

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

Port C 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 6 and 7, and can be specified as on or off on an individual bit basis.
When a PCDDR bit is cleared to 0 in mode 6 or 7, setting the corresponding PCPCR 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 9-18 summarizes the MOS input pull-up states.
Note: * Manual reset is only supported in the H8S/2357 ZTAT.
Table 9-18 MOS Input Pull-Up States (Port C)
Modes
6, 7
4, 5
Legend:
OFF: MOS input pull-up is always off.
ON/OFF: On when PCDDR = 0 and PCPCR = 1; otherwise off.
Note: * Manual reset is only supported in the H8S/2357 ZTAT.
Rev.6.00 Oct.28.2004 page 316 of 1016
REJ09B0138-0600H
Port C
Figure 9-18 Port C Pin Functions (Modes 4 and 5)
Power-On Hardware
Reset Standby Mode
OFF
A (output)
7
A (output)
6
A (output)
5
A (output)
4
A (output)
3
A (output)
2
A (output)
1
A (output)
0
Manual Software
Reset* Standby Mode
ON/OFF
OFF
In Other
Operations