AT89C51RB2 _ WOSENDONGLI 代理ATMEL单片机AT89C51RB2
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AT89C51RB2 带有16K系统内可编程Flash存储器

Flash (Kbytes) 16
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
Packages PDIP 40
LQFP 44
PLCC 44
Pb-Free Packages PDIP 40
LQFP 44
PLCC 44
AT89C51RB2 概述

The AT89C51RB2 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 AT89C51RB2 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 AT89C51RB2 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 AT89C51RB2by 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 AT89C51RB2 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.

AT89C51RB2 主要功能特性
AT89C51RB2 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
AT89C51RB2 应用技术支持与电子电路设计开发资源下载
  1. AT89C51RB2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)