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HD6432351 데이터시트(PDF) 85 Page - Renesas Technology Corp

부품명 HD6432351
상세설명  16-Bit Single-Chip Microcomputer
PDF  1025 Pages
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD6432351 데이터시트(HTML) 85 Page - Renesas Technology Corp

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Section 2 CPU
Rev. 3.00 Sep 15, 2006 page 51 of 988
REJ09B0330-0300
2.6.4
Basic Instruction Formats
The CPU instructions consist of 2-byte (1-word) units. An instruction consists of an operation
field (op field), a register field (r field), an effective address extension (EA field), and a condition
field (cc).
Figure 2.12 shows examples of instruction formats.
op
op
rn
rm
NOP, RTS, etc.
ADD.B Rn, Rm, etc.
MOV.B @(d:16, Rn), Rm, etc.
(1) Operation field only
(2) Operation field and register fields
(3) Operation field, register fields, and effective address extension
rn
rm
op
EA (disp)
(4) Operation field, effective address extension, and condition field
op
cc
EA (disp)
BRA d:16, etc
Figure 2.12 Instruction Formats (Examples)
(1) Operation Field
Indicates the function of the instruction, the addressing mode, and the operation to be carried out
on the operand. The operation field always includes the first four bits of the instruction. Some
instructions have two operation fields.
(2) Register Field
Specifies a general register. Address registers are specified by 3 bits, data registers by 3 bits or 4
bits. Some instructions have two register fields. Some have no register field.



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