Description: The 80C31 is an 8-bit microcontroller from Intel's MCS-51 family. It is a low-cost, high-performance CMOS 8-bit microcontroller with 4K bytes of ROM, 128 bytes of RAM, two 16-bit timer/counters, a five-vector interrupt architecture, an on-chip oscillator, and clock circuitry.

Features:

• 8-bit CPU with 4K bytes of ROM and 128 bytes of RAM
• Two 16-bit timer/counters
• Five-vector interrupt architecture
• On-chip oscillator and clock circuitry

Applications:

• Automotive engine control systems
• Home appliances
• Industrial control systems
• Robotics
• Security systems
• Telecommunications(For reference only) https://www.utsource.net/itm/p/15579.html