HD64F3437TFI16V Renesas Electronics America, HD64F3437TFI16V Datasheet - Page 150

• Manufacturer Part Number: HD64F3437TFI16V
• Description: MCU FLASH 60K 100-TQFP
• Manufacturer: Renesas Electronics America

Specifications of HD64F3437TFI16V

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Port 3 Data Register (P3DR)
P3DR is an 8-bit register that stores data for pins P3
3 is read, the value in P3DR is obtained directly, regardless of the actual pin state. When a P3DDR
bit is cleared to 0, if port 3 is read the pin state is obtained.
P3DR is initialized to H'00 by a reset and in hardware standby mode. In software standby mode it
retains its existing values.
Port 3 Input Pull-Up Control Register (P3PCR)
P3PCR is an 8-bit readable/writable register that controls the input pull-up transistors in port 3. If
a P3DDR bit is cleared to 0 (designating input) and the corresponding P3PCR bit is set to 1, the
input pull-up transistor is turned on.
P3PCR is initialized to H'00 by a reset and in hardware standby mode. In software standby mode it
retains its existing values.
The input pull-ups cannot be used in slave mode (when the host interface is enabled).
118
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
P3
R/W
R/W
P3
7
7
0
7
PCR P3
0
7
R/W
R/W
P3
6
6
0
6
PCR P3
0
6
R/W
R/W
P3
5
5
0
5
PCR P3
0
5
R/W
R/W
P3
4
4
0
4
PCR P3
0
7
to P3
4
0
. When a P3DDR bit is set to 1, if port
R/W
R/W
P3
3
3
0
3
PCR P3
0
3
R/W
R/W
P3
2
2
0
2
PCR P3
0
2
R/W
R/W
P3
1
1
0
1
PCR P3
0
1
R/W
R/W
P3
0
0
0
0
PCR
0
0