DS89C430, DS89C440, DS89C450 Ultra-High-Speed Flash Microcontrollers

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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.

Key Features

Applications/Uses

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

	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.)

Key Specifications: 8051 Drop-Ins

Part Number

Internal Program Memory

Internal MOVX SRAM

Serial Ports

16-bit Timers

Data Pointers

10/100 Ethernet MAC

Features

Watchdog

Power Fail Reset & Interrupt

Power Mgmt. Mode

Ring Osc.

Supply Voltage (V)

5V-Tolerant I/O

EV-Kit

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Price^*

DS89C430

16kB Flash

1kB

•	256-Byte Internal Scratchpad

•	Data Pointer Decrement

•	Multiple External Interrupts

•	Reduced EMI Mode

Yes

4.5 to 5.5

Yes

PDIP/40
PLCC/44
TQFP/44

149

$7.00 @ 1k

DS89C450

64kB Flash

$7.78 @ 1k

See All 8051 Drop-Ins (10)

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 prices and delivery, please see the price and availability page or contact an authorized distributor.