Datasheet > AT80C51RB2-RLTUM

AT80C51RB2-RLTUM

更新时间： 2024-11-16 04:07:19

品牌	Logo	应用领域
爱特美尔 - ATMEL		微控制器
页数	文件大小	规格书
83页	1109K
描述
80C51 High Performance ROM 8-bit Microcontroller

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AT80C51RB2-RLTUM 数据手册

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

• T80C51RD2 ROMless Versions

• On-Chip 1024 bytes Expanded RAM (XRAM)

– Software Selectable Size (0, 256, 512, 768, 1024 bytes)

– 256 Bytes Selected at Reset for AT87C51RB2/RC2 Compatibility

• 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

80C51 High

Performance

ROM 8-bit

Microcontroller

AT80C51RD2

AT83C51RB2

AT83C51RC2

– 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 or 2.7V to 3.6V

• Temperature Ranges: Commercial (0 to +70°C) and Industrial (-40°C to +85°C)

• Packages: PDIL40, PLCC44, VQFP44

Description

AT8xC51Rx2 microcontrollers are high performance ROM versions of the 80C51 8-bit

microcontrollers. They contain a 0K, 16K or 32K bytes ROM memory block for

program.

The microcontrollers retain all features of the Atmel 80C52 with 256 bytes of internal

RAM, a 7-source 4-level interrupt controller and three timer/counters.

In addition, the microcontrollers have a Programmable Counter Array, an XRAM of

1024 byte, a Hardware Watchdog Timer, a Keyboard Interface, a more versatile serial

channel that facilitates multiprocessor communication (EUART) and a speed improve-

ment mechanism (X2 mode).

The microcontrollers have 2 software-selectable modes of reduced activity and 8 bit

clock prescaler for further reduction in power consumption. In Idle mode, the CPU is

frozen while the peripherals and the interrupt system are still operating. In the Power-

down mode, the RAM is saved and all other functions are inoperative.

Rev. 4113B–8051–03/05

12 3 4 5 6 7...83

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