Question
Download Solution PDFThe address range of the bit addressable memory area in the 8051 microcontroller is ______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is: 3) 20-2Fh
Explanation:
In the 8051 microcontroller, the bit-addressable memory area is a 16-byte range from 20H to 2FH in the internal RAM (data memory). This area contains 128 addressable bits (16 bytes × 8 bits per byte = 128 bits). Each bit in this region can be directly accessed using bit addresses from 00H to 7FH.
The other options:
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00-FFh - This is the entire internal RAM range, but only 20H-2FH is bit-addressable
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00-7Fh - This is the lower half of internal RAM (including SFRs), but not all is bit-addressable
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20-7Fh - This includes non-bit-addressable RAM beyond 2FH
Last updated on Jun 7, 2025
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