Question

Write the RAM size of the following Microcontroller:

8051

Answer 1

The standard Intel 8051 microcontroller has an internal RAM size of 128 bytes.

This memory is organized into three distinct areas: four register banks (32 bytes), a bit-addressable area (16 bytes), and a general-purpose scratchpad (80 bytes).

While it can be expanded with up to 64 KB of external RAM, the on-chip internal RAM remains fixed at 128 bytes for the standard model.