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AT80C51RD2 Datasheet(PDF) 1 Page - ATMEL Corporation |
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AT80C51RD2 Datasheet(HTML) 1 Page - ATMEL Corporation |
1 / 81 page Features • 80C52 Compatible – Four 8-bit I/O Ports – Three 16-bit Timer/Counters – 256 Bytes Scratch Pad RAM – 8 Interrupt Sources with 4 Priority Levels – Dual Data Pointer • Variable Length MOVX for Slow RAM/Peripherals • High-speed Architecture – 10 to 40 MHz in Standard Mode • 16K/32K Bytes On-Chip ROM Program • AT80C51RD2 ROMless Versions • On-Chip 1024 bytes Expanded RAM (XRAM) – Software Selectable Size (0, 256, 512, 768, 1024 bytes) – 256 Bytes Selected at Reset • Keyboard Interrupt Interface on Port P1 • 8-bit Clock Prescaler • 64K Program and Data Memory Spaces • 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: 2.7V to 5.5V • Temperature Ranges: Commercial (0 to +70°C) and Industrial (-40°C to +85°C) • Packages: PDIL40, PLCC44, VQFP44 80C51 High Performance ROM 8-bit Microcontroller AT80C51RD2 |
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