single-chip 8-bit microcontroller.
* 80C51 central processing unit
* 48 K × 8 ROM, expandable externally to 64 Kbytes
* ROM Code protection
* 1536 × 8 RAM, expandable externally to 64 Kbyt.
The P80C557E6/P83C557E6 (hereafter generically referred to as P8xC557E6) single-chip 8-bit microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family. The P8xC557E6 has the same instruction set.
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