Rainbow Electronics DS89C450 User Manual
General description, Applications, Ordering information
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REV: 111003
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GENERAL DESCRIPTION
The DS89C430, DS89C440, 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 Ultra-High-Speed Flash Microcontroller User’s Guide should
be used in conjunction with this data sheet. Download it at
APPLICATIONS
Data Logging
Vending
Automotive Test Equipment
Motor Control
Magstripe Reader/Scanner
Consumer Electronics
Gaming Equipment
Telephones
HVAC Programmable
Logic
Controllers
Uninterruptible Power
Supplies
Building Security and
Door Access Control
Building Energy Control and
Management
Industrial Control and
Automation
White Goods (Washers,
Microwaves, etc.)
ORDERING INFORMATION
PART
FLASH
MEMORY SIZE
PIN-PACKAGE
DS89C430-MNL
16kB x 8
40 PDIP
DS89C430-QNL
16kB x 8
44 PLCC
DS89C430-ENL
16kB x 8
44 TQFP
DS89C440-MNL
32kB x 8
40 PDIP
DS89C440-QNL
32kB x 8
44 PLCC
DS89C440-ENL
32kB x 8
44 TQFP
DS89C450-MNL
64kB x 8
40 PDIP
DS89C450-QNL
64kB x 8
44 PLCC
DS89C450-ENL
64kB x 8
44 TQFP
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/32kB/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
DS89C430/DS89C440/DS89C450
Ultra-High-Speed Flash Microcontrollers
www.maxim-ic.com