RX610 Group
14. I/O Ports
R01UH0032EJ0120 Rev.1.20
Page 379 of 1006
Feb 20, 2013
14.2.2
Data Register (DR)
Note: The lower six bits are valid and the upper two bits are reserved in P0.DR.
The B3 bit in P5.DR is reserved.
The lower seven bits are valid and the upper one bit is reserved in P8.DR.
The lower seven bits are valid and the upper one bit is reserved in PF.DR.
The reserved bits other than the B3 bit in P5.DR are read as 0. The write value should be 0.
The B3 bit in P5.DR is readable and writable.
Addresses: P0.DR 0008 C020h, P1.DR 0008 C021h, P2.DR 0008 C022h, P3.DR 0008 C023h,
P4.DR 0008 C024h, P5.DR 0008 C025h, P6.DR 0008 C026h, P7.DR 0008 C027h,
P8.DR 0008 C028h, P9.DR 0008 C029h, PA.DR 0008 C02Ah, PB.DR 0008 C02Bh,
PC.DR 0008 C02Ch, PD.DR 0008 C02Dh, PE.DR 0008 C02Eh, PF.DR 0008 C02Fh,
PG.DR 0008 C030h, PH.DR 0008 C031h
b7
b6
b5
b4
b3
b2
b1
b0
Value after reset:
0
0
0
0
0
0
0
0
B7
B6
B5
B4
B3
B2
B1
B0
Bit
Symbol
Bit Name
Description
R/W
b0
B0
Pm0 Output Data Store (m = 0 to 9 and A to H) Output data are stored.
R/W
b1
B1
Pm1 Output Data Store
R/W
b2
B2
Pm2 Output Data Store
R/W
b3
B3
Pm3 Output Data Store
R/W
b4
B4
Pm4 Output Data Store
R/W
b5
B5
Pm5 Output Data Store
R/W
b6
B6
Pm6 Output Data Store
R/W
b7
B7
Pm7 Output Data Store
R/W
Each DR stores the output data from the individual pins of the corresponding port used as a general I/O port.
In addition, the output of the P53 pin is the BCLK signal and the value of the B3 bit in P5.DR does not affect the pin.