Atmel AT89S8253 8-bit Microcontroller 12KB Flash 44-Pin LCC SMD

The Atmel AT89S8253 8-bit Microcontroller is a 12KB flash embedded control device supplied in a 44-pin LCC surface-mount package. It is an advanced, low-power, high-performance CMOS microcontroller designed for embedded control applications.

Overview

The device features 12KB of in-system programmable (ISP) flash program memory and 2KB of EEPROM data memory, manufactured using Atmel's high-density nonvolatile memory technology. It is fully compatible with the industry-standard MCS-51 instruction set and pinout, which supports easy integration into existing designs.

A key advantage is the on-chip downloadable flash, which allows the program memory to be reprogrammed in-system via an SPI serial interface or by a conventional nonvolatile memory programmer. Combining a powerful 8-bit CPU with re-programmable flash on a single chip provides a flexible solution for a wide range of embedded projects.

Key Features

• Memory: 12KB ISP flash, 2KB EEPROM and 256 bytes RAM
• Clock speed: 0 to 24 MHz in x1 and x2 modes, with fully static operation
• I/O and communication: 32 programmable I/O lines, enhanced UART with framing error detection and enhanced double-buffered SPI serial interface
• Timers and interrupts: three 16-bit timer/counters, programmable watchdog timer and four-level enhanced interrupt controller with nine interrupt sources
• Power management: low-power idle and power-down modes, interrupt recovery from power-down and a power-off flag
• Additional hardware: dual data pointer, internal power-on reset and three-level program memory lock for software security
• Supply voltage: 2.7V to 5.5V

Package and Dimensions

The device is supplied in a surface-mount 44-pin LCC package and is designed for robust performance in industrial environments. Listed dimensions are 3.3 (width), 1.5 (depth) and 4.3 (height), with a product weight of 0.2 gm.

The Atmel AT89S8253 suits embedded control projects that require reprogrammable flash memory, a wide supply voltage range and MCS-51 compatibility.