HD6412350 Hitachi, HD6412350 Datasheet - Page 386

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

Port B MOS Pull-Up Control Register (PBPCR) [H8S/2351 Only]
PBPCR is an 8-bit readable/writable register that controls the MOS input pull-up function
incorporated into port B on an individual bit basis.
When a PBDDR bit is cleared to 0 (input port setting) in mode 2, 3, 6, or 7, setting the
corresponding PBPCR bit to 1 turns on the MOS input pull-up for the corresponding pin.
PBPCR is initialized to H'00 by a power-on reset, and in hardware standby mode. It retains its
prior state after a manual reset, and in software standby mode.
9.9.3
Modes 1, 4, and 5: In modes 1, 4, and 5, port B pins are automatically designated as address
outputs.
Port B pin functions in modes 1, 4, and 5 are shown in figure 9-12.
366
Bit
Initial value
R/W
Pin Functions
:
:
:
PB7PCR
R/W
Figure 9-12 Port B Pin Functions (Modes 1, 4, and 5)
7
0
PB6PCR
R/W
6
0
PB5PCR
Port B
R/W
5
0
PB4PCR
R/W
4
0
A
A
A
A
A
A
A
A
15
14
13
12
11
10
9
8
(output)
(output)
(output)
(output)
(output)
(output)
(output)
(output)
PB3PCR
R/W
3
0
PB2PCR
R/W
2
0
PB1PCR
R/W
1
0
PB0PCR
R/W
0
0