Datasheet

Section 2 CPU
Rev. 6.00 Aug 04, 2006 page 45 of 680
REJ09B0145-0600
2.3.1 Data Formats in General Registers
Data of all the sizes above can be stored in general registers as shown in figure 2.3.
76543210
Data Type Register No. Data Format
70
1-bit data RnH
76543210Don't care
70
1-bit data RnL
MSB LSB Don't care
Don't care
70
Byte data RnH
Byte data RnL
Word data Rn
4-bit BCD data RnH
4-bit BCD data RnL
Legend:
RnH:
RnL:
MSB:
LSB:
Upper byte of general register
Lower byte of general register
Most significant bit
Least significant bit
MSB LSB Don't care
70
MSB LSB
15 0
Upper digit Lower digit
Don't care
7034
Don't care
Upper digit Lower digit
70
34
Figure 2.3 Register Data Formats