HD6433682 ETC, HD6433682 Datasheet - Page 49

• Manufacturer Part Number: HD6433682
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
• Manufacturer: ETC

2.3
The H8/300H CPU can process 1-bit, 4-bit (BCD), 8-bit (byte), 16-bit (word), and 32-bit
(longword) data. Bit-manipulation instructions operate on 1-bit data by accessing bit n (n = 0, 1, 2,
…, 7) of byte operand data. The DAA and DAS decimal-adjust instructions treat byte data as two
digits of 4-bit BCD data.
2.3.1
Figure 2.5 shows the data formats in general registers.
Data Formats
General Register Data Formats
Data Type
1-bit data
1-bit data
4-bit BCD data
4-bit BCD data
Byte data
Byte data
Figure 2.5 General Register Data Formats (1)
General Register
RnH
RnL
RnH
RnL
RnH
RnL
MSB
Data Format
7
7
7
7
Upper
6 5 4 3 2
Don't care
Don't care
Don't care
4 3
Lower
1 0
LSB
0
0
0
Rev. 3.00, 05/03, page 19 of 472
MSB
7
7
7
7
Upper
6 5 4 3 2
Don't care
Don't care
Don't care
4 3
Lower
1 0
LSB
0
0
0