H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 414

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 9 I/O Ports
9.9.4
Port B has a built-in MOS input pull-up function that can be controlled by software. This MOS
input pull-up function can be used in modes 2, 3, 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 2, 3, 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.
Table 9.16 MOS Input Pull-Up States (Port B)
Legend:
OFF:
ON/OFF: On when PBDDR = 0 and PBPCR = 1; otherwise off.
Rev. 3.00 Sep 15, 2006 page 380 of 988
REJ09B0330-0300
1, 4, 5
2, 3, 6, 7
Modes
MOS Input Pull-Up Function [H8S/2351 Only]
MOS input pull-up is always off.
Figure 9.14 Port B Pin Functions (Modes 3 and 7)
Power-On
Reset
Port B
OFF
Standby Mode
Hardware
PB
PB
PB
PB
PB
PB
PB
PB
7
6
5
4
3
2
1
0
Manual
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
Reset
Standby Mode
Software
ON/OFF
OFF
Operations
In Other