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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.
DS89C440 Maximum Ratings
Voltage Range on Any Pin Relative to Ground..-0.3V to (VCC + 0.5V) Voltage Range on VCC Relative to Ground.......-0.3V to +6.0V Ambient Temperature Range (under bias).......-40 to +85 Storage Temperature Range..............-55to +125 Soldering Temperature...........See IPC/JEDEC J-STD-020 Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only,and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to the absolute maximum rating conditions for extended periods may affect device reliability.
DS89C440 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
DS89C440 Typical Application
·Data Logging Telephones Building Energy Uninterruptible Automotive Text Industrial Control Control and Power Supplies Equipment and Automation ·White Goods HVAC Management ·Motor Control Vending Programmable Building Security Consumer Logic Controllers and Door Access Electronics ·Magstripe Gaming Control ·Reader/Scanner Equipment