p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 201

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

8.3.2
P3DR stores output data of port 3.
8.3.3
P3PCR controls the port 3 on-chip input pull-up MOSs on a bit-by-bit basis.
Bit
7
6
5
4
3
2
1
0
Bit
7
6
5
4
3
2
1
0
Bit Name
P37DR
P36DR
P35DR
P34DR
P33DR
P32DR
P31DR
P30DR
Bit Name
P37PCR
P36PCR
P35PCR
P34PCR
P33PCR
P32PCR
P31PCR
P30PCR
Port 3 Data Register (P3DR)
Port 3 Pull-Up MOS Control Register (P3PCR)
0
0
0
0
0
0
0
0
Initial
Value
0
0
0
0
0
0
0
0
Initial
Value
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
If a port 3 read is performed while P3DDR bits are set to
1, the P3DR values are read directly, regardless of the
actual pin states. If a port 3 read is performed while
P3DDR bits are cleared to 0, the pin states are read.
Description
In modes 2 and 3 (when EXPE = 0), the input pull-up
MOS is turned on when a P3PCR bit is set to 1 in the
input port state.
Rev. 1.00 Sep. 21, 2006 Page 163 of 658
Section 8 I/O Ports
REJ09B0310-0100