DS89C430/DS89C440/DS89C450
Ultra-High-Speed Flash Microcontrollers
www.maxim-ic.com
GENERAL DESCRIPTION
FEATURES
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
Cꢀ 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
speed improvement up to 10x. At
1
million
Dual Data Pointers with Automatic
Increment/Decrement and Toggle Select
Supports Four Paged Memory-Access Modes
instructions per second (MIPS) per megahertz, the
microcontrollers achieve 33 MIPS performance from
a maximum 33MHz clock rate.
Cꢀ On-Chip Memory
16kB/32kB/64kB Flash Memory
In-Application Programmable
In-System Programmable Through Serial Port
1kB SRAM for MOVX
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.
APPLICATIONS
Cꢀ 80C52 Compatible
Data Logging
Vending
8051 Pin and Instruction Set Compatible
Four Bidirectional, 8-Bit I/O Ports
Three 16-Bit Timer Counters
256 Bytes Scratchpad RAM
Automotive Test Equipment
Magstripe Reader/Scanner
Gaming Equipment
HVAC
Motor Control
Consumer Electronics
Telephones
Programmable Logic
Controllers
Cꢀ Power-Management Mode
Uninterruptible Power
Supplies
Building Security and
Door Access Control
Programmable Clock Divider
Building Energy Control and
Management
Automatic Hardware and Software Exit
Industrial Control and
Cꢀ ROMSIZE Feature
Automation
White Goods (Washers,
Selects Internal Program Memory Size from
0 to 64kB
Microwaves, etc.)
Allows Access to Entire External Memory Map
ORDERING INFORMATION
Dynamically Adjustable by Software
FLASH
Cꢀ Peripheral Features
PART
PIN-PACKAGE
MEMORY SIZE
Two Full-Duplex Serial Ports
Programmable Watchdog Timer
13 Interrupt Sources (Six External)
Five Levels of Interrupt Priority
Power-Fail Reset
DS89C430-MNL
DS89C430-QNL
DS89C430-ENL
DS89C440-MNL
DS89C440-QNL
DS89C440-ENL
DS89C450-MNL
DS89C450-QNL
DS89C450-ENL
16kB x 8
16kB x 8
16kB x 8
32kB x 8
32kB x 8
32kB x 8
64kB x 8
64kB x 8
64kB x 8
40 PDIP
44 PLCC
44 TQFP
40 PDIP
44 PLCC
44 TQFP
40 PDIP
44 PLCC
44 TQFP
Early Warning Power-Fail Interrupt
Electromagnetic Interference (EMI) Reduction
Complete Selector Guide appears at end of data sheet.
Pin Configurations appear at end of data sheet.
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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