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Atmel offers a variety of high performance Flash 8051 microcontrollers featuring in-system programming (ISP). Their integrated Flash memory can be programmed either in parallel mode or in serial mode with the appropriate parallel/ISP software, respectively.

They feature a wide range of internal RAM configurations, plus rich features such as interrupt controllers and timer/counters. Select models feature an A/D converter, Boot Flash memory, and Programmable Counter Arrays. Their highly efficient design can help reduce system power consumption by bringing the clock frequency down to any value — even DC — without loss of data.

Software-selectable modes of reduced activity and an 8 bit clock prescaler can further control power consumption.

The rich functionality and efficiency of Atmel 8051 Flash ISP microcontrollers make them ideal for applications that need A/D conversion, pulse width modulation, high speed I/O and counting capabilities such as industrial control, consumer goods, alarms, motor control, and more.

 
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Low Pin Count 8-Bit Microcontroller with A/D Converter and 16KB Flash

8-Bit Microcontroller, 32KB Flash, 2KB EEPROM, 10-Bit A/D Converter, 3V to 5.5V

Enhanced 8-Bit Microcontroller with 64KB Flash Memory

High performance 8-Bit Microcontroller 64KB Flash, 2KB EEPROM

8-Bit Flash Microcontroller with Two-Wire Interface

High-Performance CMOS Flash Version of the 80C51 CMOS Single Chip 8-Bit Microcontroller

8-Bit Microcontroller, 16KB Flash

8-Bit Microcontroller, 32KB Flash

High-Performance 8-Bit Microcontroller, 64KB Flash

8-Bit Microcontroller, 4KB ISP, 128 bytes RAM, 16MHz, 2.7V to 4.0V

8-Bit Microcontroller, 8KB ISP Flash, 256 bytes RAM, 16MHz 2.7V to 4.0V

8-Bit Microcontroller with 2KB ISP Flash

8-Bit Microcontroller with 4KB ISP Flash

8-Bit Microcontroller, 4KB ISP Flash

8-Bit Microcontroller, 8KB ISP Flash

8-Bit Microcontroller, 12KB Flash