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DS89C420

Features: ·80C52 Compatible 8051 Pin- and Instruction-Set Compatible Four Bidirectional I/O Ports Three 16-Bit Timer Counters 256 Bytes Scratchpad RAM·On-Chip Memory 16kB Flash Memory In-System Programmable through Serial Port 1kB SRAM for MOVX·ROMSIZE Feature Selects Internal Program Memory Size ...

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SeekIC No. : 004329280 Detail

DS89C420: Features: ·80C52 Compatible 8051 Pin- and Instruction-Set Compatible Four Bidirectional I/O Ports Three 16-Bit Timer Counters 256 Bytes Scratchpad RAM·On-Chip Memory 16kB Flash Memory In-System Prog...

DS89C420 Data Sheet

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Part Number:
DS89C420
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

·80C52 Compatible  8051 Pin- and Instruction-Set Compatible Four Bidirectional I/O Ports Three 16-Bit Timer Counters 256 Bytes Scratchpad RAM
·On-Chip Memory 16kB Flash Memory In-System Programmable through Serial Port 1kB SRAM for MOVX
·ROMSIZE Feature  Selects Internal Program Memory Size from 0 to 16k Allows Access to Entire External Memory Map Dynamically Adjustable by Software
· High-Speed Architecture 1 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 Auto Increment/Decrement and Toggle Select Supports Four Paged Modes
·Power Management Mode Programmable Clock Divider Automatic Hardware and Software Exit
· 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


Pinout

Connection Diagram


Specifications

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
Operating Temperature Range............ -40 to +85
Storage Temperature Range ............-55 to +125
Soldering Temperature... See IPC/JEDEC J-STD-020 Specification
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 absolute maximum rating conditions for extended periods can affect device reliability


Description

The DS89C420 offers the highest performance available in 8051-compatible microcontrollers. It features a redesigned processor core that executes every 8051 instruction (depending on the instruction type) up to 12 times faster than the original for the same crystal speed. Typical applications see a speed improvement of 10 times using the same code and crystal. The DS89C420 offers a maximum crystal speed of 33MHz, achieving execution rates up to 33 million instructions per second (MIPS).

The DS89C430 ultra-high-speed flash microcontroller is an improved version of the DS89C420. The device offers more features, such as in-application programming, for approximately the same price. Engineers interested in the DS89C420 are encouraged to compare both devices when selecting an ultra-high-speed flash microcontroller.




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