DS1249AB

RECOMMENDED FOR NEW DESIGNS

DS1249AB

2048k Nonvolatile SRAM

RECOMMENDED FOR NEW DESIGNS

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1ku List Price Starting From $48.58

Features

10 years minimum data retention in the absence of external power
Data is automatically protected during power loss
Unlimited write cycles
Low-power CMOS operation
Read and write access times of 70ns
Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time
Full ±10% V_CC operating range (DS1249Y)
Optional ±5% V_CC operating range (DS1249AB)
Optional industrial temperature range of -40°C to +85°C; designated IND
JEDEC standard 32-pin DIP package

Additional Details

The DS1249 2048k Nonvolatile (NV) SRAMs are 2,097,152-bit, fully static, nonvolatile SRAMs organized as 262,144 words by 8 bits. Each NV SRAM has a self-contained lithium energy source and control circuitry which constantly monitors V_CC for an out-of-tolerance condition. When such a condition occurs, the lithium energy source is utomatically switched on and write protection is unconditionally enabled to prevent data corruption. There is no limit on the number of write cycles which can be executed and no additional support circuitry is required for microprocessor interfacing.

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Submit your question below and we will return the best answer from ADI’s knowledge database:

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Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

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Part Models 2

1ku List Price Starting From $48.58

Technical Documents 6

DS1249AB-DS1249Y: 2048k Nonvolatile SRAM Data Sheet (Rev.3) 11/23/2010

Low-Temperature Data Retention in Nonvolatile SRAM 09/11/2008

Substitution Rules for Nonvolatile Memory Components 01/12/2011

Lithium Battery Content in Maxim Products 03/14/2011

Timing Considerations When Using NVSRAM 03/20/2006

NV SRAM Frequently Asked Questions 05/14/2002

Design Resources 2

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
DS1249AB-70#	Encapsulated Dual-In-Line Module	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
DS1249AB-70IND#	Encapsulated Dual-In-Line Module	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys