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HD64F2149YV Folha de dados(PDF) 75 Page - Renesas Technology Corp

Nome de Peças HD64F2149YV
Descrição Electrónicos  Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series
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Fabricante Electrônico  RENESAS [Renesas Technology Corp]
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HD64F2149YV Folha de dados(HTML) 75 Page - Renesas Technology Corp

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Section 2 CPU
Rev. 3.00 Jan 18, 2006 page 47 of 1044
REJ09B0280-0300
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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