Datasheet > AT89C51RD2/ED2

AT89C51RD2/ED2

更新时间： 2024-11-23 23:32:59

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
139页	1628K
描述
AT89C51RD2/ED2 [Updated 8/03. 139 Pages]

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AT89C51RD2/ED2 数据手册

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

– 9 Interrupt Sources with 4 Priority Levels

• Integrated Power Monitor (POR/PFD) to Supervise Internal Power Supply

• ISP (In-System Programming) Using Standard V_CCPower Supply

• Boot ROM Contains Low Level Flash Programming Routines and a Default Serial

Loader

8-bit Flash

Microcontroller

• 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)

AT89C51RD2

AT89C51ED2

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 (AT89C51ED2 Only)

– 100K Write Cycles

• Dual Data Pointer

• Variable Length MOVX for Slow RAM/Peripherals

• Improved X2 Mode with Independent Selection for CPU and Each Peripheral

• Keyboard Interrupt Interface on Port 1

• SPI Interface (Master/Slave Mode)

• 8-bit Clock Prescaler

• 16-bit Programmable Counter Array

– 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

• Single Range Power Supply: 2.7V to 5.5V

• Industrial Temperature Range (-40 to +85°C)

• Packages: PLCC44, VQFP44, PLCC68, VQFP64, DIL40, PDIL40

Description

AT89C51RD2/ED2 is high performance CMOS Flash version of the 80C51 CMOS sin-

gle chip 8-bit microcontroller. It contains a 64-Kbyte Flash memory block for code and

for data.

The 64-Kbytes Flash memory can be programmed either in parallel mode or in serial

mode with the ISP capability or with software. The programming voltage is internally

generated from the standard V_CCpin.

Rev. 4235C–8051–08/03

12 3 4 5 6 7...139

中文翻译

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与AT89C51RD2/ED2相关器件

型号	品牌	获取价格	描述	数据表
AT89C51RD2_08	ATMEL	获取价格	8-bit Flash Microcontroller
AT89C51RD2_14	ATMEL	获取价格	During UART Reception, Clearing REN May Generate Unexpected IT
AT89C51RD2-IM	ATMEL	获取价格	8-bit Flash Microcontroller
AT89C51RD2-RDTIM	ATMEL	获取价格	8-bit Flash Microcontroller
AT89C51RD2-RDTUM	ATMEL	获取价格	8-bit Flash Microcontroller
AT89C51RD2-RLTIM	ATMEL	获取价格	8-bit Flash Microcontroller
AT89C51RD2-RLTUM	ATMEL	获取价格	8-bit Flash Microcontroller
AT89C51RD2-RLVUM	ATMEL	获取价格	Microcontroller, 8-Bit, FLASH, 40MHz, CMOS, PQFP44, VQFP-44
AT89C51RD2-SLSIM	ATMEL	获取价格	8-bit Flash Microcontroller
AT89C51RD2-SLSUM	ATMEL	获取价格	8-bit Flash Microcontroller

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