Keil_MicroVision_8051_Microcontroller_Software_Programs

This repository comprises of my coursework software programs under the course 8051 Microcontroller Assembly Level Language Programming.

General Introduction - 8051 Architecture:-

Architecture shows usual CPU components such as Program counter (PC),ALU, working registers and clock circuits.

=> Features: • 8 bit CPU with registers A (Accumulator) & B
• 16 bit program counter (PC) and Data pointer (DPTR). • 8 bit Program status word (PSW). • 8 bit stack pointer. • Internal ROM of 4kbytes. • Internal RAM of 128 bytes. • 4 register banks each containing 8 registers. • 16 bytes of bit addressable registers. • 8 bytes of general purpose data memory. • 32 I/O pins arranged in four 8 pin ports (P0 to P3). • Two 16 bit Timer/Counter (T0 & T1). • Full duplex serial data receiver / transmitter (SBUF). 15 • Control registers, TCON, TMOD, SCON, PCON, IP & IE. • 2 external & 3 internal interrupt source. • Oscillator and clock circuits

Alphabetical List of Instructions

1. ACALL - Absolute Call
2. ADD, ADDC - Add Accumulator (With Carry)
3. AJMP - Absolute Jump
4. ANL - Bitwise AND
5. CJNE - Compare and Jump if Not Equal
6. CLR - Clear Register
7. CPL - Complement Register
8. DA - Decimal Adjust
9. DEC - Decrement Register
10. DIV - Divide Accumulator by B
11. DJNZ - Decrement Register and Jump if Not Zero
12. INC - Increment Register
13. JB - Jump if Bit Set
14. JBC - Jump if Bit Set and Clear Bit
15. JC - Jump if Carry Set
16. JMP - Jump to Address
17. JNB - Jump if Bit Not Set
18. JNC - Jump if Carry Not Set
19. JNZ - Jump if Accumulator Not Zero
20. JZ - Jump if Accumulator Zero 21 LCALL - Long Call
21. LJMP - Long Jump
22. MOV - Move Memory
23. MOVC - Move Code Memory
24. MOVX - Move Extended Memory
25. MUL - Multiply Accumulator by B
26. NOP - No Operation
27. ORL - Bitwise OR
28. POP - Pop Value From Stack
29. PUSH - Push Value Onto Stack
30. RET - Return From Subroutine
31. RETI - Return From Interrupt
32. RL - Rotate Accumulator Left
33. RL - Rotate Accumulator Left
34. RLC - Rotate Accumulator Left Through Carry
35. RR - Rotate Accumulator Right
36. RRC - Rotate Accumulator Right Through Carry
37. SETB - Set Bit
38. SJMP - Short Jump
39. SUBB - Subtract From Accumulator With Borrow
40. SWAP - Swap Accumulator Nibbles
41. XCH - Exchange Bytes
42. XCHD - Exchange Digits
43. XRL - Bitwise Exclusive OR
44. Undefined - Undefined Instruction