AT89C51IC2

Features 80C52 Compatible – 8051 Pin and Instruction Compatible – Four 8-bit I/O ports + 2 I/O 2-wire Interface (TWI) Pins – Three 16-bit Timer/Counters – 256 bytes Scratch Pad RAM – 10 Interrupt Sources with 4 Priority Levels – Dual Data Pointer Variable Length MOVX for Slow RAM/Peripherals ISP (In-System-Programming) Using Standard Vcc Power Supply Boot ROM Contains Low Level Flash Programming Routines and a Default Serial Loader High-speed Architecture – In Standard Mode: 40 MHz (Vcc 2.7V to 5.5V, both Internal and external code execution) 60 MHz (Vcc 4.5V to 5.5V and Internal Code execution only) – In X2 mode (6 Clocks/machine cycle) 20 MHz (Vcc 2.7V to 5.5V, both Internal and external code execution) 30 MHz (Vcc 4.5V to 5.5V and Internal Code execution only) – 32K Bytes On-chip Flash Program/Data Memory – Byte and Page (128 Bytes) Erase and Write – 100K Write Cycles On-chip 1024 Bytes Expanded RAM (XRAM) – Software Selectable Size (0...