November 2000
Intermediate to advanced
192 pages
4h 15m
English
Content preview from Microcontroller Cookbook, 2nd Edition
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Appendices
A MCS51 Instruction Set
Notes
Notes
| Rn | Register R7–R0 of currently selected register bank |
| direct | 8-bit internal data location’s address |
| @Ri | Internal RAM location 0–255 addressed indirectly through R7–0 |
| #data | 8-bit constant included in instruction |
| #data16 | 16-bit constant included in instruction |
| addr16 | 16-bit destination address (used in LCALL & LJMP) |
| addr11 | 11-bit destination address (used in ACALL & AJMP) |
| rel | Signed (2’s complement) 8-bit offset byte (SJMP) |
| bit | Direct addressed bit in internal data RAM or Special Function Register |
Arithmetic Operations
Arithmetic Operations
| ADD | A,Rn | Add register n to A |
| ADD | A,direct | Add direct byte to A |
| ADD | A,@Ri | Add indirect RAM to A |
| ADD | A,#data | Add immediate data ... |
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