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80C51 Microcontroller
Separate address spaces for program and data memory
- Program Memory: Up to 64k bytes, lower 4k on-chip
- Data Memory: Up to 64k bytes, MOVX instruction for external access
- On-chip RAM: 128 bytes
- Special Function Registers (SFRs)
Top Features:
- Separate address spaces for program and data memory
- 64k bytes of program memory
- 128 bytes of on-chip RAM
- MOVX instruction for external data memory access
Figure 1 shows a map of the 80C51 program memory. The lower 128 bytes of RAM can be accessed either by direct addressing (MOV data addr) or by indirect addressing (MOV @Ri).
*Images are for illustration only; actual product may vary.