AT89S4051 _ WOSENDONGLI 代理ATMEL单片机AT89S4051
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AT89S4051 带有4K系统内可编程Flash系统

Flash (Kbytes)   4
ISP   SPI
RAM (Bytes)   256
F.max (MHz)   24
Vcc (V)   2.7-5.5
I/O Pins   15
UART   Yes
16-bit Timers   2
Pb-Free Packages   SOIC (300mil) 20 
PDIP 20

2.7-Volt, 80C31 Microcontroller with 2K Bytes In-System Programmable Flash, 20-pin Package.

AT89S2051 概述

The AT89S2051/S4051 is a low-voltage, high-performance CMOS 8-bit microcontroller with 2K/4K bytes of In-System Programmable (ISP) Flash program memory. The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set. By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89S2051/S4051 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications. Moreover, the AT89S2051/S4051 is designed to be function compatible with the AT89C2051/C4051 devices, respectively.

The AT89S2051/S4051 provides the following standard features: 2K/4K bytes of Flash, 256 bytes of RAM, 15 I/O lines, two 16-bit timer/counters, a six-vector, fourlevel interrupt architecture, a full duplex enhanced serial port, a precision analog comparator, on-chip and clock circuitry. Hardware support for PWM with 8-bit resolution and 8-bit prescaler is available by reconfiguring the two on-chip timer/counters. In addition, the AT89S2051/S4051 is designed with static logic for operation down to zero frequency and supports two software-selectable power saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port and interrupt system to continue functioning. The power-down mode saves the RAM contents but freezes the disabling all other chip functions until the next external interrupt or hardware reset.

The on-board Flash program memory is accessible through the ISP serial interface. Holding RST active forces the device into a serial programming interface and allows the program memory to be written to or read from, unless one or more lock bits have been activated.

AT89S4051 特性
AT89S4051 订购型号
Speed (MHz)) 电源供应 订购型号 封装 适用范围
24 2.7V to 5.5V AT89S4051-24PU
AT89S4051-24SU
20P3
20S2
Industrial (-40° C to 85° C)
AT89S4051 应用技术支持与电子电路设计开发资源下载
  1. AT89S4051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)