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89C51IC2-CM Datasheet(PDF) 1 Page - ATMEL Corporation |
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89C51IC2-CM Datasheet(HTML) 1 Page - ATMEL Corporation |
1 / 146 page Rev. 4301A–8051–01/04 1 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 V cc 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, 256, 512, 768, 1024 Bytes) – 256 Bytes Selected at Reset for TS87C51RB2/RC2 Compatibility • Keyboard Interrupt Interface on Port P1 • 400-Kbits/s Multimaster 2-wire Interface • SPI Interface (Master/Slave Mode) • Sub-clock 32 kHz Crystal Oscillator • 8-bit clock Prescaler • Improved X2 Mode With Independant Selection for CPU and Each Peripheral • Programmable Counter Array 5 Channels with: – High Speed Output – Compare/Capture – Pulse Width Modulator – Watchdog Timer Capabilities • Asynchronous Port Reset • Full-duplex Enhanced UART • Dedicated Baud Rate Generator for UART • Low EMI (Inhibit ALE) • Hardware Watchdog Timer (One-time enabled with Reset-Out) • Power Control Modes: –Idle Mode – Power-down Mode – Power-Off Flag • Power Supply: – 2.7 to 3.6 (3V Version) – 2.7 to 5.5V (5V Version) • Temperature Ranges: Commercial (0 to +70 °C) and Industrial (-40°C to +85°C) • Packages: PLC44, VQFP44 8-bit Flash Microcontroller with 2-wire Interface AT89C51IC2 |
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