DS89C450

Ultra-High-Speed Flash Microcontrollers

Ultra-High-Speed Flash Microcontrollers Offer In-Application Programmable Flash Memory


Please check latest availability status for a specific part variant.

Description

The DS89C430 and DS89C450 offer the highest performance available in 8051-compatible microcontrollers. They feature newly designed processor cores that execute instructions up to 12 times faster than the original 8051 at the same crystal speed. Typical applications will experience a speed improvement up to 10x. At 1 million instructions per second (MIPS) per megahertz, the microcontrollers achieve 33 MIPS performance from a maximum 33MHz clock rate.

The DS89C440 is a 32kB version of the DS89C450 that is no longer available. The DS89C450 can be used as a drop-in replacement.
DS89C430, DS89C440, DS89C450: Functional Diagram DS89C430, DS89C440, DS89C450: Functional Diagram Enlarge+

Key Features

  • High-Speed 8051 Architecture
    • One Clock-Per-Machine Cycle
    • DC to 33MHz Operation
    • Single Cycle Instruction in 30ns
    • Optional Variable Length MOVX to Access Fast/Slow Peripherals
    • Dual Data Pointers with Automatic Increment/Decrement and Toggle Select
    • Supports Four Paged Memory-Access Modes
  • On-Chip Memory
    • 16kB/64kB Flash Memory
    • In-Application Programmable
    • In-System Programmable Through Serial Port
    • 1kB SRAM for MOVX
  • 80C52 Compatible
    • 8051 Pin and Instruction Set Compatible
    • Four Bidirectional, 8-Bit I/O Ports
    • Three 16-Bit Timer Counters
    • 256 Bytes Scratchpad RAM
  • Power-Management Mode
    • Programmable Clock Divider
    • Automatic Hardware and Software Exit
  • ROMSIZE Feature
    • Selects Internal Program Memory Size from 0 to 64kB
    • Allows Access to Entire External Memory Map
    • Dynamically Adjustable by Software
  • Peripheral Features
    • Two Full-Duplex Serial Ports
    • Programmable Watchdog Timer
    • 13 Interrupt Sources (Six External)
    • Five Levels of Interrupt Priority
    • Power-Fail Reset
    • Early Warning Power-Fail Interrupt
    • Electromagnetic Interference (EMI) Reduction

Applications/Uses

  • Automated Test Equipment (ATE)
  • Building Energy Control and Management
  • Building Security and Door Access Control
  • Consumer Electronics
  • Data Logging
  • Gaming Equipment
  • HVAC
  • Industrial Control and Automation
  • Magstripe Reader/Scanner
  • Motor Control
  • Programmable Logic Controllers
  • Telephones
  • Uninterruptible Power Supplies
  • Vending
  • White Goods (Washers, Microwaves, Etc.)
Part NumberMCU CoreCore Clock Speed
(MHz)
Data ProcessingInternal Flash
(KBytes)
Internal SRAM
(KBytes)
USARTsTimer FeaturesPackage/PinsBudgetary
Price
maxSee Notes
DS89C430 8051 (CISC)338-bit1612Watchdog
PDIP/40
PLCC/44
TQFP/44
$9.40 @1k
DS89C450 64
PDIP/40
PLCC/44
TQFP/44
$10.26 @1k
See All Microcontrollers (55)
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 4833 Ultra-High-Speed Flash Microcontroller User's Guide
App Note 4199 Porting Applications from the High-Speed Micro Family to Ultra-High-Speed Flash Microcontrollers
App Note 4039 Using the DS89C450 as a Static LCD Display Controller
App Note 3524 Efficient Bit-Banged SPI Port for 8051-Compatible Microcontrollers
App Note 3477 Using the Free SDCC C Compiler to Develop Firmware for the DS89C430/450 Family of Microcontrollers
App Note 3452 Instant Performance Enhancement with Flash Microcontrollers
App Note 3421 Interfacing 8051-based Microcontrollers to an SCI Port
App Note 3362 Using the Keil µVision Debugger with the DS89C4x0
App Note 3267 Using the Keil C Compiler with the DS89C430/450
App Note 3262 In-System Programming with 8051-Based Microcontrollers
App Note 3078 Ultra-High-Speed Flash Microcontroller Software SPI
App Note 2035 The Fast 8051 Microcontroller: Leading the Way in Growth and Innovation
App Note 1087 Micro Tutorial 1: Understanding DC Electrical Characteristics of Microcontrollers
App Note 605 Data Pointer Decrement Feature Simplifies Copy Operation for Overlapping Memory Buffers
App Note 604 Fast Memory Transfers with the Ultra High-Speed Flash Microcontroller
App Note 603 Implementing a Serial Port FIFO Using Dual Data Pointers
App Note 600 Ultra High Speed Microcontroller Hardware Enhances Serial Port Capability
App Note 595 8051 Microcontrollers: Frequently Asked Questions
App Note 137 Using a EconOscillator™ to Clock an 8051 Microprocessor
App Note 102 Using the High-Speed Microcontroller as a Bootstrap Loader
App Note 78 Using Power Management with High-Speed Microcontrollers
App Note 75 Using the High-Speed Micro's Serial Ports
App Note 26 DS89C430/DS89C450 Ultra High-Speed Flash Microcontroller Memory Interface Timing

Quality and Environmental Data

Product Reliability Reports: DS89C450.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

Development Tools
Keil C Compiler
Metalink In-Circuit Emulator
Phyton In-Circuit Emulator

CAD Symbols and Footprints

  • DS89C450-ENG
  • DS89C450-ENG+
  • DS89C450-ENL
  • DS89C450-ENL+
  • DS89C450-MNG
  • DS89C450-MNG+
  • DS89C450-MNL
  • DS89C450-MNL+
  • DS89C450-QNG
  • DS89C450-QNG+
  • DS89C450-QNL
  • DS89C450-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 >

     
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    Type ID PDF Title
    User Guide 4833 Ultra-High-Speed Flash Microcontroller User's Guide
    App Note 4199 Porting Applications from the High-Speed Micro Family to Ultra-High-Speed Flash Microcontrollers
    App Note 4039 Using the DS89C450 as a Static LCD Display Controller
    App Note 3524 Efficient Bit-Banged SPI Port for 8051-Compatible Microcontrollers
    App Note 3477 Using the Free SDCC C Compiler to Develop Firmware for the DS89C430/450 Family of Microcontrollers
    App Note 3452 Instant Performance Enhancement with Flash Microcontrollers
    App Note 3421 Interfacing 8051-based Microcontrollers to an SCI Port
    App Note 3362 Using the Keil µVision Debugger with the DS89C4x0
    App Note 3267 Using the Keil C Compiler with the DS89C430/450
    App Note 3262 In-System Programming with 8051-Based Microcontrollers
    App Note 3078 Ultra-High-Speed Flash Microcontroller Software SPI
    App Note 2035 The Fast 8051 Microcontroller: Leading the Way in Growth and Innovation
    App Note 1087 Micro Tutorial 1: Understanding DC Electrical Characteristics of Microcontrollers
    App Note 605 Data Pointer Decrement Feature Simplifies Copy Operation for Overlapping Memory Buffers
    App Note 604 Fast Memory Transfers with the Ultra High-Speed Flash Microcontroller
    App Note 603 Implementing a Serial Port FIFO Using Dual Data Pointers
    App Note 600 Ultra High Speed Microcontroller Hardware Enhances Serial Port Capability
    App Note 595 8051 Microcontrollers: Frequently Asked Questions
    App Note 137 Using a EconOscillator™ to Clock an 8051 Microprocessor
    App Note 102 Using the High-Speed Microcontroller as a Bootstrap Loader
    App Note 78 Using Power Management with High-Speed Microcontrollers
    App Note 75 Using the High-Speed Micro's Serial Ports
    App Note 26 DS89C430/DS89C450 Ultra High-Speed Flash Microcontroller Memory Interface Timing