DS80C320

High-Speed/Low-Power Microcontrollers


Please check latest availability status for a specific part variant.

Description

The DS80C320/DS80C323 are fast 80C31/80C32-compatible microcontrollers. Wasted clock and memory cycles have been removed using a redesigned processor core. As a result, every 8051 instruction is executed between 1.5 and 3 times faster than the original for the same crystal speed. Typical applications see a speed improvement of 2.5 times using the same code and same crystal. The DS80C320 offers a maximum crystal rate of 33MHz, resulting in apparent execution speeds of 82.5MHz (approximately 2.5X).

The DS80C320/DS80C323 are pin compatible with all three packages of the standard 80C32 and offer the same timer/counters, serial port, and I/O ports. In short, the devices are extremely familiar to 8051users, but provide the speed of a 16-bit processor.

The DS80C320 provides several extras in addition to greater speed. These include a second full hardware serial port, seven additional interrupts, programmable watchdog timer, power-fail interrupt and reset. The device also provides dual data pointers (DPTRs) to speed block data memory moves. It can also adjust the speed of off-chip data memory access to between two and nine machine cycles for flexibility in selecting memory and peripherals.

The DS80C320 operating voltage ranges from 4.25V to 5.5V, making it ideal as a high-performance upgrade to existing 5V systems. For applications in which power consumption is critical, the DS80C323 offers the same feature set as the DS80C320, but with 2.7V to 5.5V operation.

Designers must have two documents to fully use all the features of this device: this data sheet and the High-Speed Microcontroller User's Guide, available on our website at www.maximintegrated.com/microcontrollers. Data sheets contain pin descriptions, feature overviews, and electrical specifications, whereas our user's guides contain detailed information about device features and operation.
DS80C320, DS80C323: Block Diagram DS80C320, DS80C323: Block Diagram Enlarge+

Key Features

  • 80C32-Compatible
    • 8051 Pin and Instruction Set Compatible
    • Four 8-Bit I/O Ports
    • Three 16-Bit Timer/Counters
    • 256 Bytes Scratchpad RAM
    • Addresses 64kB ROM and 64kB RAM
  • High-Speed Architecture:
    • 4 Clocks/Machine Cycle (8032 = 12)
    • DC to 33MHz (DS80C320)
    • DC to 18MHz (DS80C323)
    • Single-Cycle Instruction in 121ns
    • Uses Less Power for Equivalent Work
    • Dual Data Pointer
    • Optional Variable Length MOVX to Access Fast/Slow RAM/Peripherals
  • High-Integration Controller Includes:
    • Power-Fail Reset
    • Programmable Watchdog Timer
    • Early Warning Power-Fail Interrupt
  • Two Full-Duplex Hardware Serial Ports
  • 13 Total Interrupt Sources with Six External
  • Available in 40-Pin DIP, 44-Pin PLCC, and 44-Pin TQFP
Part NumberMCU CoreCore Clock Speed
(MHz)
Data ProcessingUSARTsTimer FeaturesPackage/PinsBudgetary
Price
maxSee Notes
DS80C320 8051 (CISC)338-bit2Watchdog
MQFP/44
PDIP/40
PLCC/44
TQFP/44
$8.79 @1k
DS80C323 18
PDIP/40
PLCC/44
TQFP/44
$4.07 @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.

Technical Documents

User Guide 4827 High-Speed Microcontroller User's Guide
App Note 4427 Demonstrating Green Technology with Apples, Oranges, Lemons, and Limes
App Note 4335 Saving Energy: Little Things Mean a Lot
App Note 4199 Porting Applications from the High-Speed Micro Family to Ultra-High-Speed Flash Microcontrollers
App Note 3421 Interfacing 8051-based Microcontrollers to an SCI Port
App Note 2035 The Fast 8051 Microcontroller: Leading the Way in Growth and Innovation
App Note 1771 Microcontrollers Improve Power Efficiency of 8051-Based Designs
App Note 1087 Micro Tutorial 1: Understanding DC Electrical Characteristics of Microcontrollers
App Note 610 Replacing an Atmel TS80C51U2 with a DS80C320/323 Microcontroller
App Note 603 Implementing a Serial Port FIFO Using Dual Data Pointers
App Note 595 8051 Microcontrollers: Frequently Asked Questions
App Note 548 Using the High-Speed Micro's Watchdog Timer
App Note 137 Using a EconOscillator™ to Clock an 8051 Microprocessor
App Note 91 Microcontroller Design Guidelines for Reducing ALE Signal Noise
App Note 89 High-Speed Micro Memory Interface Timing
App Note 81 Memory Expansion with the High-Speed Microcontroller Family
App Note 75 Using the High-Speed Micro's Serial Ports
App Note 57 DS80C320 Memory Interface Timing
App Note 56 The DS80C320 as a Drop-In Replacement for the 8051/8032 Microcontroller

Quality and Environmental Data

Product Reliability Reports: DS80C320.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

High-Speed Microcontroller User's Guide (PDF)

CAD Symbols and Footprints

  • DS80C320-ECG+
  • DS80C320-ECL+
  • DS80C320-ENG+
  • DS80C320-ENL+
  • DS80C320-FCG+
  • DS80C320-MCG+
  • DS80C320-MCL+
  • DS80C320-MNG+
  • DS80C320-MNL+
  • DS80C320-QCG
  • DS80C320-QCG+
  • DS80C320-QCL+
  • DS80C320-QNG+
  • DS80C320-QNL+
  • 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 >

     
    Status:
    Package:
    Temperature:

    Related Resources


    MAX32520
    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

    MAX32570
    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


    Belle Isle 2020
    05/29/2020 - 05/31/2020, Detroit, MI
    2020 Detroit Grand Prix - Chevrolet Detroit Grand Prix presented by Lear Fast Facts The Chevrolet Detroit Grand Prix presented by Lear was hosted on Belle Isle, May 29 - 30 2020. The event featured the cars of the NTT IndyCar Series, the IMSA WeatherTech SportsCar Championship and the Trans Am Series presented by Pirelli. The weekend is collectively referred to as the Chevrolet Detroit Grand Prix presented by Lear and it once again featured the Chevrolet Dual in Detroit IndyCar doubleheader.

    RSVP