8051 Architecture

Atmel offers a broad range of microcontrollers based on the 8051 architecture. The product line includes MCS-51® industry standard socket drop-in devices, In-System Programming capability, and small footprint 20-pin derivatives in ROMless, ROM, OTP & Flash flavors (see on-line selection table). Some of the devices also take advantage of the high-speed core (X2) mode which doubles the internal clock frequency for CPU and peripherals upon selection.

The 8051 derivatives also include Application Specific Products with specialized functions to serve dedicated markets:

• CAN Networking
• MP3 Applications
• Smart Card Readers
• USB Applications

Atmel also offers 8/16 bit microcontrollers based on the powerful C251 architecture. Our C251 devices allow a direct and easy performance increase by upgrading existing 80C51-based applications.