P83C557E6/P80C557E6 Single-chip 8-bit Microcontroller

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 as the 80C51. Three versions of the derivative exist P83C557E6 - 48 Kbytes mask programmable ROMP80C557E6 - ROMless version of the P83C557E6The P8XC557E6 contains a non-volatile 48 Kbytes mask programmable ROM P83C557E6 , a volatile 1536 , 8 read/write data memory, five 8-bit I/O ports, one 8-bit input port, two 16-bit Timer event Counters (identical to the Timers of the 80C51), an additional 16-bit Timer coupled to capture and compare Latches a 15-source, two-priority-level, nested interrupt structure, an 8-input ADC a dual DAC pulse width modulated Interface two serial Interfaces (UART and IC-bus), a "watchdog" Timer an on-chip Oscillator and Timing circuits. For systems that require extra capability the P8XC557E6 CAN be expanded using standard TTL compatible Memories and Logic In addition, the P8XC557E6 has two software selectable modes of power reduction: Idle Mode and power-down mode. The Idle Mode freezes the CPU while allowing the RAM, Timers serial ports, and interrupt system to continue functioning. The power-down mode saves the RAM contents but freezes the Oscillator causing all other chip functions to be inoperative.The device also functions as an arithmetic processor having facilities for both binary and BCD arithmetic as well as bit-handling capabilities. The instruction set consists of over 100 instructions: 49 one-byte, 45 two-byte, and 17 three- byte. With a 16 MHz system Clock 58% of the instructions are executed in 0.75s and 40% in 1.5 s. Multiply and divide instructions require 3 s. P8xC557Ex factsheet
By NXP Semiconductors
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