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参数资料
| 型号： | S-1820CF |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP54 |
| 封装： | 1 MM PITCH, QFP-54 |
| 文件页数： | 6/9页 |
| 文件大小： | 92K |
| 代理商： | S-1820CF |
CMOS 8-bit 1-chip MICROCOMPUTER
S-1810CF/1820CF
6
Seiko Instruments Inc.
Instructions
1 .
There are three kinds of instructions : 1-byte, 2-byte, and 3-byte instructions.
Byte 1 is called “op code”, which indicates kinds of instruction.
Byte 2 and byte 3 are called “operand”, which indicates object of instruction.
Operand is not always necessary, and influences addressing mode.
2 .
The S-1810CF/1820CF has 17 addressing modes, and executes memory access efficiently.
1) Accumulator addressing mode : ACC
2) Immediate addressing mode : IMM
3) Absolute addressing mode : ABS
4) Zero-page addressing mode : ZPG
5) Implied addressing mode : IMP
6) Zero-page indexed X addressing mode : ZPG, X
7) Zero-page indexed Y addressing mode : ZPG, Y
8) Absolute indexed X addressing mode : ABS, X
9) Absolute indexed Y addressing mode : ABS, Y
10) Relative addressing mode : REL
11) Zero-page indexed indirect addressing mode : (IND, X)
12) Zero-page indirect indexed addressing mode : (IND), Y
13) Zero-page indirect addressing mode : (IND)
14) Absolute indexed indirect addressing mode : (ABS, X)
15) Absolute indirect addressing mode : (ABS)
16) Zero-page bit-relative addressing mode : ZREL
17) Zero-page bit addressing mode : ZBIT
3 .
Number of instructions
Operation instruction : 17
Data transfer instruction : 21
Rotate/shift instruction : 4
Flug setting instruction : 7
Bit operation instruction : 2
Branch instruction : 15
Interrupt Instruction : 1
Others : 1
Total : 68 basic instructions
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