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H8S/2225 数据表(PDF) 162 Page - Renesas Technology Corp

部件名 H8S/2225
功能描述  16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series
PDF  1071 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

H8S/2225 数据表(HTML) 162 Page - Renesas Technology Corp

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Section 2 CPU
Rev. 5.00 Aug 08, 2006 page 76 of 982
REJ09B0054-0500
2.5
Data Formats
The H8S/2000 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 2.9 shows the data formats in general registers.
70
70
MSB
LSB
MSB
LSB
70
43
Don't care
Don't care
Don't care
70
43
70
Don't care
65 43 2
71 0
70
Don't care
65 43 2
71 0
Don't care
Data Type
Register Number
Data Format
Byte data
Byte data
4-bit BCD data
4-bit BCD data
1-bit data
1-bit data
RnH
RnL
RnH
RnL
RnH
RnL
Upper
Lower
Upper
Lower
Figure 2.9 General Register Data Formats (1)



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