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H8SX1663 数据表(PDF) 88 Page - Renesas Technology Corp

部件名 H8SX1663
功能描述  Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series
PDF  1158 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

H8SX1663 数据表(HTML) 88 Page - Renesas Technology Corp

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Section 2 CPU
Rev.1.00 Jun. 07, 2006 Page 36 of 1102
REJ09B0294-0100
2.6
Data Formats
The H8SX 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.
2.6.1
General Register Data Formats
Figure 2.12 shows the data formats in general registers.
7 6 5 4 3 2 1 0
Don't care
7
0
Don't care
7 6 5 4 3 2 1 0
43
70
70
Don’t care
Upper
Lower
LSB
MSB
LSB
1-bit data
1-bit data
4-bit BCD data
4-bit BCD data
Byte data
Byte data
Word data
Word data
Longword data
RnH
RnL
RnH
RnL
RnH
RnL
Rn
En
ERn
MSB
Don't care
Upper
Lower
43
7
0
Don't care
7
0
Don't care
70
General register ER
General register E
General register R
General register RH
[Legend]
ERn:
En:
Rn:
RnH:
0
15
MSB
LSB
0
LSB
15
16
MSB
31
En
Rn
0
MSB
LSB
15
RnL:
MSB:
LSB:
General register RL
Most significant bit
Least significant bit
Figure 2.12 General Register Data Formats



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