Click to expand full text
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.
AT89C51IC2 Datasheet
