Supply original DS89C450-ENL, Embedded - Microcontrollers, by Maxim Integrated

GENERAL
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.
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) ReductionAPPLICATIONS Data Logging White Goods Motor Control Magstripe Reader/Scanner Telephones HVAC Vending Gaming Equipment Building Energy Control and Management Programmable Logic Controllers Uninterruptible Power Supplies Building Security and Door Access Control Automotive Text Equipment Consumer Electronics Industrial Control and Automation