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 B pins are automatically designated as address outputs.
Port B pin functions in modes 4 and 5 are shown in figure 9-14.
9.9.4

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

Port B 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 PBDDR bit is cleared to 0 in mode 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 9-16 summarizes the MOS input pull-up states.
Note: * Manual reset is only supported in the H8S/2357 ZTAT.
Table 9-16 MOS Input Pull-Up States (Port B)
Modes
6, 7
4, 5
Legend:
OFF: MOS input pull-up is always off.
ON/OFF: On when PBDDR = 0 and PBPCR = 1; otherwise off.
Note: Manual reset is only supported in the H8S/2357 ZTAT.
*
Port B
Figure 9-14 Port B Pin Functions (Modes 4 and 5)
Power-On Hardware
Reset Standby Mode
OFF
A (output)
15
A (output)
14
A (output)
13
A (output)
12
A (output)
11
A (output)
10
A (output)
9
A (output)
8
Manual Software
Reset* Standby Mode
ON/OFF
OFF
Rev.6.00 Oct.28.2004 page 311 of 1016
In Other
Operations
REJ09B0138-0600H