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AT89C51ID2-SMSIM Datasheet(PDF) 1 Page - ATMEL Corporation |
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AT89C51ID2-SMSIM Datasheet(HTML) 1 Page - ATMEL Corporation |
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1 / 159 page  4289A–8051–09/03 1 Features • 80C52 Compatible – 8051 Instruction Compatible – Six 8-bit I/O Ports (64 pins or 68 Pins Versions) – Four 8-bit I/O Ports (44 Pins Version) – Three 16-bit Timer/Counters – 256 bytes Scratch Pad RAM – 10 Interrupt Sources With 4 Priority Levels • ISP (In-System Programming) Using Standard V CC Power Supply • Integrated Power Monitor (POR/PFD) to Supervise Internal 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) • 64K bytes On-chip Flash Program/Data Memory – Byte and Page (128 bytes) Erase and Write – 100k Write Cycles • On-chip 1792 bytes Expanded RAM (XRAM) – Software Selectable Size (0, 256, 512, 768, 1024, 1792 bytes) – 768 bytes Selected at Reset for T89C51RD2 Compatibility • On-chip 2048 bytes EEPROM block for Data Storage – 100k Write Cycles • Dual Data Pointer • 32 KHz Crystal Oscillator • Variable Length MOVX for Slow RAM/Peripherals • Improved X2 Mode with Independant Selection for CPU and Each Peripheral • Keyboard Interrupt Interface on Port 1 • SPI Interface (Master/Slave Mode) • 8-bit Clock Prescaler • Two Wire Interface 400K bit/s • Programmable Counter Array with: – High Speed Output –Compare/Capture – Pulse Width Modulator – Watchdog Timer Capabilities • Asynchronous Port Reset • Full Duplex Enhanced UART with Dedicated Internal Baud Rate Generator • Low EMI (inhibit ALE) • Hardware Watchdog Timer (One-time Enabled with Reset-Out), Power-Off Flag • Power Control Modes: Idle Mode, Power-down Mode • Power Supply: 2.7V to 5.5V • Temperature Ranges: Industrial (-40 to +85 °C) • Packages: PLCC44, VQFP44, PLCC68(1), VQFP64(1) Note: 1. Contact Atmel Sales for availability. Description AT89C51ID2 is a high performance CMOS Flash version of the 80C51 CMOS single chip 8-bit microcontroller. It contains a 64 Kbytes Flash memory block for program and for data. 8-bit Flash Microcontroller AT89C51ID2 |
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