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Of the 128-byte internal RAM of the 8051 Microcontroller, how many bytes are bit addressable?

Of the 128-byte internal RAM of the 8051 Microcontroller, how many bytes are bit addressable? Correct Answer 16 bytes

  • 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.
  • The bit-addressable RAM locations are 20H to 2FH


The Block Diagram of an 8051 microcontroller is as shown:

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