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  • 明小姐 在2015/3/26 16:06:00留言
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龙人旗下深圳市龙芯世纪科技有限公司
  • AT89C51RC2 带有32K系统内可编程Flash存储器  
  • 发布时间:2009/7/28 15:24:56   修改时间:2009/7/28 15:24:56 浏览次数:1196
  • 首页ATMEL 爱特梅尔8051单片机

    AT89C51RC2 带有32K系统内可编程Flash存储器

    Flash (Kbytes) 32
    ISP UART
    Self Program Memory API
    RAM (Bytes) 1280
    F.max (MHz) 60
    Vcc (V) 2.7-5.5
    I/O Pins 32
    UART 1
    16-bit Timers 3
    Watchdog Yes
    SPI Yes
    Pb-Free Packages PDIP 40
    LQFP 44
    PLCC 44
    AT89C51RC2 概述

    The AT89C51RC2 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.

    Part Number Flash (Bytes) XRAM (Bytes) TOTAL RAM (Bytes) I/O
    AT89C51RB2 16K 1024 1280 32
    AT89C51RC2 32K 1024 1280 32
    AT89C51IC2 32K 1024 1280 32

    The AT89C51RC2 retains all features of the 80C52 with 256 Bytes of internal RAM, a 9-source 4-level interrupt controller and three timer/counters. In addition, the AT89C51RC2 has a Programmable Counter Array, an XRAM of 1024 Bytes, a Hardware Watchdog Timer, a Keyboard Interface, an SPI Interface, a more versatile serial channel that facilitates multiprocessor communication (EUART) and a speed improvement mechanism (X2 mode). The Pinout is the standard 40/44 pins of the C52.
    The fully static design reduces system power consumption of the AT89C51RC2 by allowing it to bring the clock frequency down to any value, even DC, without loss of data. The AT89C51RB2 has 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 power-down mode, the RAM is saved and all other functions are inoperative. The added features of the AT89C51RC2 make it more powerful for applications that need pulse width modulation, high speed I/O and counting capabilities such as alarms, motor control, corded phones, and smart card readers.

    AT89C51RC2 主要功能特性
    • AT89C51RC2 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  
    • AT89C51RC2 Variable Length MOVX for Slow RAM/Peripherals  
    • AT89C51RC2 ISP (In-system Programming) Using Standard VCC Power Supply  
    • AT89C51RC2 Boot ROM Contains Low Level Flash Programming Routines and a Default Serial   Loader
    • AT89C51RC2 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)
        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  
    • 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  
    • AT89C51RC2 Keyboard Interrupt Interface on Port P1  
    • AT89C51RC2 SPI Interface (Master/Slave Mode)  
    • AT89C51RC2 8-bit Clock Prescaler  
    • AT89C51RC2 Improved X2 Mode with Independent Selection for CPU and Each Peripheral  
    • AT89C51RC2 Programmable Counter Array 5 Channels
        – High-speed Output
        – Compare/Capture
        – Pulse Width Modulator
        – Watchdog Timer Capabilities  
    • AT89C51RC2 Asynchronous Port Reset  
    • AT89C51RC2 Full Duplex Enhanced UART  
    • AT89C51RC2 Dedicated Baud Rate Generator for UART  
    • AT89C51RC2 Low EMI (Inhibit ALE)  
    • AT89C51RC2 Hardware Watchdog Timer (One-time Enabled with Reset-out)  
    • AT89C51RC2 Power Control Modes
        – Idle Mode
        – Power-down Mode
        – Power-off Flag  
    • AT89C51RC2 Power Supply:
        – 2.7 to 3.6 (3V Version)
        – 2.7 to 5.5V (5V Version)  
    • AT89C51RC2 Temperature Ranges: Commercial (0 to +70°C) and Industrial (-40°C to +85°C)  
    • AT89C51RC2 Packages: PDIL40, PLCC44, VQFP44
    AT89C51RC2 订购信息
    Part Number MemorySize SupplyVoltage TemperatureRange Package Packing ProductMarking
    AT89C51RB2-3CSUM 16 KBytes 5V Industrial Green PDIL40 Stick 89C51RB2-UM
    AT89C51RB2-SLSUM 5V Industrial Green PLCC44 Stick 89C51RB2-UM
    AT89C51RB2-RLTUM 5V Industrial Green VQFP44 Tray 89C51RB2-UM
    AT89C51RB2-SLSUL 3V Industrial Green PLCC44 Stick 89C51RB2-UL
    AT89C51RB2-RLTUL 3V Industrial Green VQFP44 Tray 89C51RB2-UL
    AT89C51RB2-RLTUM 5V Industrial Green VQFP44 Tray 89C51RB2-UM
    AT89C51RC2-3CSUM 32 KBytes 5V Industrial Green PDIL40 Stick 89C51RC2-UM
    AT89C51RC2-SLSUM 5V Industrial Green PLCC44 Stick 89C51RC2-UM
    AT89C51RC2-RLTUM 5V Industrial Green VQFP44 Tray 89C51RC2-UM
    AT89C51RC2-SLSUL 3V Industrial Green PLCC44 Stick 89C51RC2-UL
    AT89C51RC2-RLTUL 3V Industrial Green VQFP44 Tray 89C51RC2-UL
    AT89C51RC2 技术支持
    1. AT89C51RC2数据手册DataSheet 下载. PDF
    2. 80C51微控制器的复位输入. PDF (编号: Tech 8051 00049)
    3. 80C51在系统Flash编程. PDF (编号:8051 00050)
    4. Device Programmers for 8051 Devices (Other, updated 09/07)
      This Excel spreadsheet provide summary information on device programmers supporting Atmel 8051 microcontrollers
    5. Emulators for 80C51 Devices (Other, updated 11/03)
      This Excel spreadsheet provide summary information on emulation support for Atmel 80C51 microcontrollers
    6. Package Adapters of 80C51 Devices (Other, updated 10/04)
      This Excel spreadsheet list available package adapters for Atmel 80C51 microcontrollers
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