Product Summary

Full upward compatibility with SAB 80C517A/83C517A-5
? Up to 24 MHz external operating frequency
– 500 ns instruction cycle at 24 MHz operation
? Superset of the 8051 architecture with 8 datapointers
? On-chip emulation support logic (Enhanced Hooks Technology

Features

Two full duplex serial interfaces (USART)
– 4 operating modes, fixed or variabie baud rates
– programmable baud rate generators
? Four 16-bit timer/counters
– Timer 0 / 1 (C501 compatible)
– Timer 2 for 16-bit reload, compare, or capture functions
– Compare timer for compare/capture functions