AT89S8253-24PSU 带有12K系统内可编程Flash系统PDIP-42封装

Flash (Kbytes)   12
ISP   SPI
EEPROM (Kbytes)   2
RAM (Bytes)   256
F.max (MHz)   24
Vcc (V)   2.7-5.5
I/O Pins   32
UART   1
16-bit Timers   3
Watchdog   Yes
SPI   Yes
Packages   TQFP 44 
PDIP 40 
PDIP 42 
PLCC 44
Pb-Free Packages   TQFP 44 
PDIP 40 
PDIP 42 
PLCC 44

In-System Programmable Microcontroller with 12K bytes Flash 2K bytes EEPROM

AT89S8253-24PSU 概述

The AT89S8253 is a low-power, high-performance CMOS 8-bit microcontroller with 12K bytes of In-System Programmable (ISP) Flash program memory and 2K bytes of EEPROM data memory. The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set and pinout. The on-chip downloadable Flash allows the program memory to be reprogrammed in-system through an SPI serial interface or by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with downloadable Flash on a monolithic chip, the Atmel AT89S8253 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications.

The AT89S8253 provides the following standard features: 12K bytes of In-System Programmable Flash, 2K bytes of EEPROM, 256 bytes of RAM, 32 I/O lines, programmable watchdog timer, two data pointers, three 16-bit timer/counters, a six-vector, four-level interrupt architecture, a full duplex serial port, on-chip oscillator, and clock circuitry. In addition, the AT89S8253 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 oscillator, disabling all other chip functions until the next external interrupt or hardware reset.

The on-board Flash/EEPROM is accessible through the SPI serial interface. Holding RESET active forces the SPI bus 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.

AT89S8253-24PSU 特性
AT89S8253-24PSU 订购型号
Speed (MHz) Power
Supply
Ordering Code Package Operation Range
24 2.7V to 5.5V AT89S8253-24AU
AT89S8253-24JU
AT89S8253-24PU
AT89S8253-24PSU
44A
44J
40P6
42PS6
Industrial (-40° C to 85° C)
AT89S8253-24PSU 应用技术支持与电子电路设计开发资源下载
  1. AT89S8253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)