Features and Benefits

  • 80C32 Compatible
    • 8051 Pin and Instruction Set Compatible
    • Full Duplex Serial Port
    • Three 16-Bit Timer/Counters
    • 256 Bytes Scratchpad RAM
    • Multiplexed Address/Data Bus
    • Addresses 64kB ROM and 64kB RAM
  • High-Speed Architecture
    • 4 Clocks/Machine Cycle (8051 = 12)
    • Runs DC to 33 MHz Clock Rates
    • Single-Cycle Instruction in 121ns
    • Dual Data Pointer
    • Optional Variable Length MOVX to Access Fast/Slow RAM/Peripherals
  • 10 Total Interrupt Sources with 6 External
  • Internal Power-On Reset Circuit
  • Upwardly Compatible with the DS80C320
  • Available in 40-Pin Plastic DIP, 44-pin PLCC, and 44-pin TQFP

Product Details

The DS80C310 is a fast 80C31/80C32-compatible microcontroller. It features a redesigned processor core without wasted clock and memory cycles. As a result, it executes every 8051 instruction between 1.5x and 3x faster than the original architecture for the same crystal speed. Typical applications have a speed improvement of 2.5x using the same code and the same crystal. The DS80C310 offers a 33MHz maximum crystal speed, resulting in apparent execution speeds of 82.5MHz (approximately 2.5x).

The DS80C310 is pin compatible with the standard 80C32 and includes standard resources such as three timer/counters, 256 bytes of RAM, and a serial port. It also provides dual data pointers (DPTRs) to speed block data memory moves. It also can adjust the speed of MOVX data memory access between two and nine machine cycles for flexibility in selecting external memory and peripherals. The DS80C310 offers upward compatibility with the DS80C320.

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Documentation & Resources

  • View All (14)
  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (1)
  • Application Notes (3)
  • Design Notes (1)
  • Technical Articles (7)
  • Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

    PCN-PDN Information

    Sample & Buy

    Ordering FAQs

    See our Ordering FAQs for answers to questions about online orders, payment options and more.


    Buy Now Pricing

    (**) Displayed Buy Now Price and Price Range is based on small quantity orders.


    List Pricing

    (*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


    Lead Times

    Please see the latest communication from our CCO regarding lead times.



    Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

    Price Table Help