AT87C51RD2 高性能八位单片机

Mask ROM (Kbytes)	64
RAM (Bytes)	1024
F.max (MHz)	40
Vcc (V)	2.7—5.5
I/O Pins	32
UART	1
16-bit Timers	3
Watchdog	Yes
Packages	PDIP 40 LQFP 64 LQFP 44 PLCC 44 PLCC 68
Pb-Free Packages	PDIP 40 LQFP 64 LQFP 44 PLCC 44 PLCC 68

AT87C51RD2 概述

Atmel TS8xC51Rx2 is a high performance CMOS ROM, OTP, EPROM and ROMless versions of the 80C51 CMOS single chip 8-bit microcontroller.
The TS8xC51Rx2 retains all features of the 80C51 with extended ROM/EPROM capacity (16/32/64 Kbytes), 256 bytes of internal RAM, a 7-source , 4-level interrupt system, an on-chip oscilator and three timer/counters.
In addition, the TS80C51Rx2 has a Programmable Counter Array, an XRAM of 256 or 768 bytes, a Hardware Watchdog Timer, a more versatile serial channel that facilitates multiprocessor communication (EUART) and an X2 speed improvement mechanism.
The fully static design of the TS80C51Rx2 allows to reduce system power consumption by bringing the clock frequency down to any value, even DC, without loss of data.
The TS80C51Rx2 has 2 software-selectable modes of reduced activity for further reduction in power consumption. In the idle mode the CPU is frozen while the timers, the serial port and the interrupt system are still operating. In the power-down mode the RAM is saved and all other functions are inoperative.

AT87C51RD2 特性

• 80C52 Compatible
  – 8051 pin and instruction compatible
  – Four 8-bit I/O ports
  – Three 16-bit timer/counters
  – 256 bytes scratchpad RAM
• High-Speed Architecture
  – 40 MHz @ 5V, 30MHz @ 3V
  – X2 Speed Improvement capability (6 clocks/machine cycle)
  – 30 MHz @ 5V, 20 MHz @ 3V (Equivalent to
  – 60 MHz @ 5V, 40 MHz @ 3V)
• Dual Data Pointer
• On-chip ROM/EPROM (16K-bytes, 32K-bytes, 64K-bytes)
• On-chip eXpanded RAM (XRAM) (256 or 768 bytes)
• Programmable Clock Out and Up/Down Timer/Counter 2
• Programmable Counter Array with
  – High Speed Output,
  – Compare / Capture,
  – Pulse Width Modulator,
  – Watchdog Timer Capabilities
• Hardware Watchdog Timer (One-time enabled with Reset-Out)
• 2 extra 8-bit I/O ports available on RD2 with high pin count packages
• Asynchronous port reset
• Interrupt Structure with
  – 7 Interrupt sources,
  – 4 level priority interrupt system
• Full duplex Enhanced UART
  – Framing error detection
  – Automatic address recognition
• Low EMI (inhibit ALE)
• Power Control modes
  – Idle mode
  – Power-down mode
  – Power-off Flag
• Once mode (On-chip Emulation)
• Power supply: 4.5-5V, 2.7-5.5V
• Temperature ranges: Commercial (0 to 70oC) and Industrial (-40 to 85oC)
• Packages: PDIL40, PLCC44, VQFP44 1.4, PLCC68, VQFP64 1.4

AT87C51RD2 订购型号

Part Number	Memory size	Supply Voltage	Temperature Range	Max Frequency	Package	Packing
AT87C51RD2-3CSUM	OTP 64k Bytes	5V	Industrial Green	40 MHz (20 MHz X2)	PDIL40	Stick
AT87C51RD2-SLSUM	OTP 64k Bytes	5V	Industrial Green	40 MHz (20 MHz X2)	PLCC44	Stick
AT87C51RD2-RLTUM	OTP 64k Bytes	5V	Industrial Green	40 MHz (20 MHz X2)	VQFP44	Tray
AT87C51RD2-3CSUL	OTP 64k Bytes	3-5V	Industrial Green	30 MHz (20 MHz X2)	PDIL40	Stick
AT87C51RD2-SLSUL	OTP 64k Bytes	3-5V	Industrial Green	30 MHz (20 MHz X2)	PLCC44	Stick
AT87C51RD2-RLTUL	OTP 64k Bytes	3-5V	Industrial Green	30 MHz (20 MHz X2)	VQFP44	Tray

AT87C51RD2 应用技术支持与电子电路设计开发资源下载

1. AT87C51RD2 数据资料 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)