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H8SX/1663R データシート(PDF) 67 Page - Renesas Technology Corp

部品番号 H8SX/1663R
部品情報  Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series
PDF  1504 Pages
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メーカー  RENESAS [Renesas Technology Corp]
ホームページ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8SX/1663R データシート(HTML) 67 Page - Renesas Technology Corp

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Section 2 CPU
Rev. 2.00 Sep. 24, 2008 Page 35 of 1468
REJ09B0412-0200
2.2
CPU Operating Modes
The H8SX CPU has four operating modes: normal, middle, advanced and maximum modes. These
modes can be selected by the mode pins of this LSI.
CPU operating modes
Normal mode
Maximum mode
Maximum 64 kbytes for program
and data areas combined
Maximum 4 Gbytes for program
and data areas combined
Maximum 16-Mbyte program
area and 64-kbyte data area,
maximum 16 Mbytes for program
and data areas combined
Maximum 16-Mbyte program
area and 4-Gbyte data area,
maximum 4 Gbytes for program
and data areas combined
Advanced mode
Middle mode
Figure 2.1 CPU Operating Modes
2.2.1
Normal Mode
The exception vector table and stack have the same structure as in the H8/300 CPU.
• Address Space
The maximum address space of 64 kbytes can be accessed.
• Extended Registers (En)
The extended registers (E0 to E7) can be used as 16-bit registers, or as the upper 16-bit
segments of 32-bit registers. When the extended register En is used as a 16-bit register it can
contain any value, even when the corresponding general register Rn is used as an address
register. (If the general register Rn is referenced in the register indirect addressing mode with
pre-/post-increment or pre-/post-decrement and a carry or borrow occurs, however, the value in
the corresponding extended register En will be affected.)
• Instruction Set
All instructions and addressing modes can be used. Only the lower 16 bits of effective
addresses (EA) are valid.



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