High-Speed Microcontroller

Please check latest availability status for a specific part variant.


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.
DS80C310: Block Diagram DS80C310: Block Diagram Enlarge+

Key Features

  • 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
Part NumberMCU CoreCore Clock Speed
Data ProcessingUSARTsPackage/PinsBudgetary
maxSee Notes
DS80C310 8051 (CISC)258-bit1
$8.57 @1k
See All Microcontrollers (57)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >


Related Resources

ChipDNA Secure Arm Cortex M4 Microcontroller

    High-Efficiency Microcontroller for Secure Element IoT
  • Secure Element
  • Power Management Maximizes Operating Time for Battery Applications
  • Multiple Peripherals for System Control

Low-Power Arm Cortex-M4 Microcontroller with Contactless Radio for Secure Applications

  • High-Efficiency Microcontroller for Secure Battery-Powered Applications
  • Scalable Cached External Memory Interfaces
  • Security Features Facilitates System-Level Protection