DS89C430/DS89C440/DS89C450
Ultra-High-Speed Flash Microcontrollers
www.maxim-ic.com
GENERAL DESCRIPTION
FEATURES
Cꢀ High-Speed 8051 Architecture
One Clock-Per-Machine Cycle
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
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
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.
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.
ORDERING INFORMATION
Cꢀ 80C52 Compatible
FLASH
8051 Pin and Instruction Set Compatible
Four Bidirectional, 8-Bit I/O Ports
Three 16-Bit Timer Counters
256 Bytes Scratchpad RAM
PART
PIN-PACKAGE
MEMORY SIZE
16kB
DS89C430-MNL
DS89C430-MNL+
DS89C430-QNL
DS89C430-QNL+
DS89C430-ENL
DS89C430-ENL+
DS89C440-MNL
DS89C440-MNL+
DS89C440-QNL
DS89C440-QNL+
DS89C440-ENL
DS89C440-ENL
DS89C450-MNL
DS89C450-MNL+
DS89C450-QNL
DS89C450-QNL+
DS89C450-ENL
DS89C450-ENL+
40 PDIP
40 PDIP
44 PLCC
44 PLCC
44 TQFP
44 TQFP
40 PDIP
40 PDIP
44 PLCC
44 PLCC
44 TQFP
44 TQFP
40 PDIP
40 PDIP
44 PLCC
44 PLCC
44 TQFP
44 TQFP
16kB
16kB
Cꢀ Power-Management Mode
16kB
16kB
Programmable Clock Divider
16kB
Automatic Hardware and Software Exit
32kB
Cꢀ ROMSIZE Feature
32kB
Selects Internal Program Memory Size from
0 to 64kB
32kB
32kB
Allows Access to Entire External Memory Map
32kB
Dynamically Adjustable by Software
32kB
64kB
Cꢀ Peripheral Features
64kB
Two Full-Duplex Serial Ports
Programmable Watchdog Timer
13 Interrupt Sources (Six External)
Five Levels of Interrupt Priority
Power-Fail Reset
64kB
64kB
64kB
64kB
+ Denotes a lead-free/RoHS-compliant device.
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.
APPLICATIONS
Data Logging
Telephones
Building Energy
Control and
Uninterruptible
Automotive Text Industrial Control
Power Supplies
Equipment
and Automation
Management
White Goods
Motor Control
HVAC
Vending
Programmable
Building Security
Consumer
Logic Controllers
and Door Access Electronics
Control
Magstripe
Gaming
Reader/Scanner
Equipment
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: 060805