MAXIM DS89C430, DS89C450 User Manual

www.maxim-ic.com

Ultra-High-Speed Flash Microcontrollers

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

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ORDERING INFORMATION

PART

DS89C430-MNL

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
DS89C450-MNL

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.

FLASH

MEMORY SIZE

16kB 40 PDIP

Contact factory or replace with
DS89C430 or DS89C450.

64kB 40 PDIP

PIN-PACKAGE

APPLICATIONS

Data Logging Telephones
White Goods HVAC

Motor Control Vending
Magstripe

Reader/Scanner

Gaming
Equipment

Building Energy
Control and
Management
Programmable
Logic Controllers

Uninterruptible
Power Supplies

Building Security
and Door Access
Control

DS89C430/DS89C450

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

Automotive Text
Equipment

Consumer
Electronics

Industrial Control
and Automation

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata

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REV: 040507

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