Port 4 Data Register (P4DR)
Bit
7
P47
0
6
P46
0
5
P45
0
4
P44
0
3
P43
0
2
P42
0
1
P41
0
0
P40
0
Initial value
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
P4DR is an 8-bit register that stores data for pins P47 to P40. When a P4DDR bit is set to 1, if port
4 is read, the value in P4DR is obtained directly, regardless of the actual pin state. When a P4DDR
bit is cleared to 0, if port 4 is read the pin state is obtained. This also applies to pins used by on-
chip supporting modules.
P4DR is initialized to H'00 by a reset and in hardware standby mode. In software standby mode it
retains its existing values.
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RENESAS [ RENESAS TECHNOLOGY CORP ]
