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HD6432120 Datasheet(PDF) 64 Page - Renesas Technology Corp

Part # HD6432120
Description  Single-Chip Microcomputer
Download  843 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD6432120 Datasheet(HTML) 64 Page - Renesas Technology Corp

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2.5
Data Formats
The 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.
2.5.1
General Register Data Formats
Figure 2.10 shows the data formats in general registers.
76543210
Don’t care
70
Don’t care
76543210
43
70
70
Don’t care
Upper digit Lower digit
LSB
MSB
LSB
Data Type
General Register
Data Format
1-bit data
1-bit data
4-bit BCD data
4-bit BCD data
Byte data
Byte data
RnH
RnL
RnH
RnL
RnH
RnL
MSB
Don’t care
Upper digit Lower digit
43
70
Don’t care
70
Don’t care
70
Figure 2.10 General Register Data Formats


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