hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 72
hd64338023s
Manufacturer Part Number
hd64338023s
Description
Renesas 8-bit Single-chip Microcomputer Super Low Power Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HD64338023S.pdf
(697 pages)
- Current page: 72 of 697
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Section 2 CPU
2.3.1
Data of all the sizes above can be stored in general registers as shown in figure 2.3.
Rev. 7.00 Mar 10, 2005 page 30 of 652
REJ09B0042-0700
1-bit data
1-bit data
Byte data
Byte data
Word data
4-bit BCD data
4-bit BCD data
[Legend]
RnH:
RnL:
MSB:
LSB:
Data Type
Upper byte of general register
Lower byte of general register
Most significant bit
Least significant bit
Data Formats in General Registers
Register No.
RnH
RnL
RnH
RnL
Rn
RnH
RnL
MSB
MSB
15
7
7
7
7
Figure 2.3 Register Data Formats
Upper digit
6
5
Don't care
Don't care
Don't care
4
4
3
3
Lower digit
2
1
Data Format
LSB
0
0
0
0
MSB
7
7
7
7
Upper digit
6
5
Don't care
Don't care
Don't care
4
4
3
3
Lower digit
2
1
LSB
LSB
0
0
0
0
0
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