Ultra-High-Speed Flash Microcontrollers

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.

Applications

* 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.)

* 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