HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 269

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

Port C MOS Pull-Up Control Register (PCPCR)
PCPCR is an 8-bit readable/writable register that controls the MOS input pull-up function
incorporated into port C on an individual bit basis.
When a PCDDR bit is cleared to 0 (input port setting) in mode 2, 3, 6, or 7*, setting the
corresponding PCPCR bit to 1 turns on the MOS input pull-up for the corresponding pin.
PCPCR 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.
Note: * Modes 1 to 3 are not available on the F-ZTAT version.
8.8.3
Modes 1, 4, and 5*: In modes 1, 4, and 5*, port C pins are automatically designated as address
outputs.
Port C pin functions in modes 1, 4, and 5 are shown in figure 8.14.
Note: * Modes 1 to 3 are not available on the F-ZTAT version.
252
Bit
Initial value
R/W
Modes 2, 3, 6, and 7 are not available on the ROMless version.
Modes 2, 3, 6, and 7 are not available on the ROMless version.
Pin Functions
:
:
:
PC7PCR
R/W
Figure 8.14 Port C Pin Functions (Modes 1, 4, and 5)*
7
0
PC6PCR
R/W
6
0
PC5PCR
Port C
R/W
5
0
PC4PCR
R/W
4
0
A
A
A
A
A
A
A
A
7
6
5
4
3
2
1
0
(output)
(output)
(output)
(output)
(output)
(output)
(output)
(output)
PC3PCR
R/W
3
0
PC2PCR
R/W
2
0
PC1PCR
R/W
1
0
PC0PCR
R/W
0
0