MAXIM DS89C430-MNG+

The DS89C430 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 DS89C440 is a 32kB version of the DS89C450 that is no longer available. The DS89C450 can be used as a drop-in replacement.

• 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/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