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REV: 040507

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

GENERAL 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.

The Ultra-High-Speed Flash Microcontroller User’s Guide should

be used in conjunction with this data sheet. Download it at

www.maxim-ic.com/microcontrollers.

ORDERING INFORMATION

PART

FLASH

MEMORY SIZE

PIN-PACKAGE

DS89C430-MNL

16kB

40 PDIP

DS89C430-MNL+

16kB

40 PDIP

DS89C430-QNL

16kB

44 PLCC

DS89C430-QNL+

16kB

44 PLCC

DS89C430-ENL

16kB

44 TQFP

DS89C430-ENL+

16kB

44 TQFP

DS89C440-xxx

Contact factory or replace with

DS89C430 or DS89C450.

DS89C450-MNL

64kB

40 PDIP

DS89C450-MNL+

64kB

40 PDIP

DS89C450-QNL

64kB

44 PLCC

DS89C450-QNL+

64kB

44 PLCC

DS89C450-ENL

64kB

44 TQFP

DS89C450-ENL+

64kB

44 TQFP

+ Denotes a lead(Pb)-free/RoHS-compliant device.

Complete Selector Guide appears at end of data sheet.

Pin Configurations appear at end of data sheet.

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

Data Logging

Telephones

White Goods

HVAC

Building Energy

Control and

Management

Uninterruptible

Power Supplies

Automotive Text

Equipment

Industrial Control

and Automation

Motor Control

Vending

Magstripe

Reader/Scanner

Gaming

Equipment

Programmable

Logic Controllers

Building Security

and Door Access

Control

Consumer

Electronics

DS89C430/DS89C450

Ultra-High-Speed Flash Microcontrollers

www.maxim-ic.com