Question
Download Solution PDFWhat is the size of internal data memory in an 8051 microcontroller?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- 8051 is an 8-bit microcontroller built with 40 pins DIP (dual inline package).
- 8051 has internal RAM (128 Bytes) and ROM (4K Bytes).
- Of the 128-byte internal RAM, only 16 bytes are bit-addressable. The rest must be accessed in byte format.
Notes:
The Block Diagram of an 8051 microcontroller is as shown:
In an 8051 microcontroller,
- Internal RAM (data memory) - 128 bytes
- Internal memory (code memory) - 4 kB (ROM)
- Timer/counter - 2
- No. of interrupt - 5
- I/O pins - 32
- Serial port - 1
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