Maxim > Products > 1-Wire® Devices > DS2223, DS2224

DS2223, DS2224

EconoRAM

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Status Explanations for product status codes

Part Number Status Replacement Explanation
DS2223 This product is Not Recommended for New Designs. Some versions may be No Longer Available or being discontinued and subject to Last Time Buy, after which new orders can not be placed. See Ordering Information for details. DS2431
 
Full 1-Wire interface, 256-bit EEPROM 
DS2224 This product is No Longer Available. See Ordering Information for recommended replacements.DS2423
DS2431
 
Full 1-Wire interface, 256-bit EEPROM 

Description

Neither the DS2223 or DS2224 are available for new designs.

The DS2223 and DS2224 EconoRAMs are fully static, micropowered, read/write memories in low-cost TO-92 or SOT-223 packages. The DS2223 is organized as a serial 256 x 1-bit static read/write memory. The DS2224's first 32 bits are lasered with a unique ID code at the time of manufacture; the remaining 224 bits are static read/write memory. Signaling necessary for reading or writing is reduced to just one interface lead.
 

Data Sheet

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Key Features

  • Low-cost, general-purpose, 256-bit memory
    • DS2223 has 256-bit SRAM
    • DS2224 has 32-bit ROM, 224-bit SRAM
  • Reduces control, address, and data interface to a single pin
  • Each DS2224 32-bit ROM is factory-lasered with a unique serial number
  • DS2224 portion of ROM with custom code and unique serial number available
  • Minimal operating power: 45 nanocoulombs per transaction at 1.5V typical
  • Less than 15nA standby current at +25°C
  • Nonvolatile data retention easily achieved by low-cost alkaline batteries or capacitors
  • Directly connects to a port pin of popular microcontrollers
  • Operation from 1.2V to 5.5V
  • Popular TO-92 or SOT-223 surface mount package
  • Operates over industrial temperature range -40°C to +85°C
   
   

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Rev 1; 1998-08-05
This page last modified: 2007-07-25




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