Section 2 CPU
Rev. 3.00 Mar. 14, 2006 Page 34 of 804
REJ09B0104-0300
7 6 5 4 3 2 1 0
Don’t care
7
0
Don’t care
7 6 5 4 3 2 1 0
4 3
7
0
7
0
Don’t care
Upper
Lower
LSB
MSB
LSB
1-bit data
1-bit data
4-bit BCD data
4-bit BCD data
Byte data
Byte data
Word data
Word data
Longword data
RnH
RnL
RnH
RnL
RnH
RnL
Rn
En
ERn
MSB
Don’t care
Upper
Lower
4 3
7
0
Don’t care
7
0
Don’t care
7
0
General register ER
General register E
General register R
General register RH
[Legend]
ERn:
En:
Rn:
RnH:
0
15
MSB
LSB
0
LSB
15
16
MSB
31
En
Rn
0
MSB
LSB
15
RnL:
MSB:
LSB:
General register RL
Most significant bit
Least significant bit
Figure 2.12 General Register Data Formats
electronic components distributor