AT89S4051-24PU 带有4K系统内可编程Flash系统PDIP-20封装

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.

2K version: AT89S2051

4K version: AT89S4051

AT89S4051-24PU 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.

AT89S4051-24PU 特性
AT89S4051-24PU 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)
AT89S4051-24PU 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)