AT80C51RD2 datasheet(1/81 Pages) ATMEL

Part #	AT80C51RD2

Description	80C51 High Performance ROM 8-bit Microcontroller

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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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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AT80C51RD2 Datasheet(PDF) 1 Page - ATMEL Corporation

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