Datasheet > AT89C51RB2

AT89C51RB2

更新时间： 2023-12-06 20:10:21

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
127页	1530K
描述
High-performance, 8-bit microcontroller with 16KB flash. It retains all features of the 80C52 with

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AT89C51RB2 数据手册

Features

• 80C52 Compatible

– 8051 Pin and Instruction Compatible

– Four 8-bit I/O Ports

– Three 16-bit Timer/Counters

– 256 Bytes Scratch Pad RAM

– 9 Interrupt Sources with 4 Priority Levels

– Dual Data Pointer

• Variable Length MOVX for Slow RAM/Peripherals

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

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

Loader

8-bit

• High-speed Architecture

Microcontroller

with 16K/

32K Bytes Flash

– 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)

– 16K/32K Bytes On-chip Flash Program/Data Memory

– Byte and Page (128 Bytes) Erase and Write

– 100K Write Cycles

AT89C51RB2

AT89C51RC2

• 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

• SPI Interface (Master/Slave Mode)

• 8-bit Clock Prescaler

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

• Programmable Counter Array 5 Channels

– 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: PDIL40, PLCC44, VQFP44

Description

The AT89C51RB2/RC2 is a high-performance Flash version of the 80C51 8-bit micro-

controllers. It contains a 16K or 32K Bytes Flash memory block for program and data.

The 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 VCC pin.

Rev. 4180E–8051–10/06

12 3 4 5 6 7...127

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与AT89C51RB2相关器件

型号	品牌	获取价格	描述	数据表
AT89C51RB2/RC2	ATMEL	获取价格	AT89C51RB2/RC2 [Updated 4/03. 125 Pages]
AT89C51RB2_06	ATMEL	获取价格	8-bit Microcontroller with 16K/ 32K Bytes Flash
AT89C51RB2_14	ATMEL	获取价格	Variable Length MOVX for Slow RAM/Peripherals
AT89C51RB2-3CSIM	ATMEL	获取价格	8-bit Microcontroller with 16K/ 32K Bytes Flash
AT89C51RB2-3CSUM	ATMEL	获取价格	8-bit Microcontroller with 16K/ 32K Bytes Flash
AT89C51RB2-3CSUM	MICROCHIP	获取价格	IC MCU 8BIT 16KB FLASH 40DIP
AT89C51RB2-RLTCM	ATMEL	获取价格	8-bit Microcontroller with 16K/ 32K Bytes Flash
AT89C51RB2-RLTIL	ATMEL	获取价格	8-bit Microcontroller with 16K/ 32K Bytes Flash
AT89C51RB2-RLTIM	ATMEL	获取价格	8-bit Microcontroller with 16K/ 32K Bytes Flash
AT89C51RB2-RLTUL	ATMEL	获取价格	8-bit Microcontroller with 16K/ 32K Bytes Flash

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