D12320VF25IV Datasheet, PDF (77/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

2.5.1 General Register Data Formats
Figure 2.7 shows the data formats in general registers.
Section 2 CPU
Data Type
Register Number Data Format
1-bit data
RnH
7
0
76543210
Don’t care
1-bit data
RnL
Don’t care
7
0
76543210
4-bit BCD data
RnH
7
43
0
Upper Lower
Don’t care
4-bit BCD data
RnL
Don’t care
7
43
0
Upper Lower
Byte data
Byte data
RnH
RnL
7
MSB
0
Don’t care
LSB
7
0
Don’t care
MSB
LSB
Figure 2.7 General Register Data Formats
Rev.6.00 Sep. 27, 2007 Page 45 of 1268
REJ09B0220-0600