DS1270W:3.3V 16Mb Nonvolatile SRAM

3.3V Nonvolatile SRAMs Provide Up to 16Mb Density

The DS1270W 16Mb nonvolatile (NV) SRAMs are 16,777,216-bit, fully static, NV SRAMs organized as 2,097,152 words by 8 bits. Each NV SRAM has a self-contained lithium energy source and control circuitry that constantly monitors VCC for an out-of-tolerance condition. When such a condition occurs, the lithium energy source is automatically switched on and write protection is unconditionally enabled to prevent data corruption. There is no limit on the number of write cycles that can be executed, and no additional support circuitry is required for microprocessor interfacing.

Key Features
  • Five 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 100ns
  • Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time
  • Optional industrial (IND) temperature range of -40°C to +85°C
DS1270W: Pin Assignment
DS1270W: Pin Assignment
  • Automated Test Equipment (ATE)
  • Automatic Utility Meter Reading
  • Building Energy Management (HVAC)
  • Cable Modems
  • Computers: Desktop, Workstation, Server
  • Digital Television (Receivers, Set-Top Boxes)
  • Modems (Analog, ISDN, DSL)
  • Network Hubs, Switches, Routers
  • Notebook Computers
  • Oscilloscopes
  • Printers and Faxes
  • Programmable Logic Controllers
  • Storage Systems
  • Test and Measurement Equipment
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DS1270W Data SheetDS1270W.pdf
Part NumberMemory TypeMemory SizeBus TypeVSUPPLY
minmaxSee Notes
DS1270WNV SRAM2M x 8Parallel33.6EDIP/36$130.28 @1k
Quality and Environmental Data
Related Products
Ordering Information
Part NumberNotesStatusRecommended ReplacementPackageTempRoHS
DS1270W-1003.3V, 100nsNo Longer AvailableDS1270W-100#EDIP,;36 pin;861.6 mm²0°C to +70°CSee data sheet
DS1270W-100#ActiveEDIP,;36 pin;861.6 mm²0°C to +70°C
DS1270W-100IND3.3V, 100nsNo Longer AvailableDS1270W-100IND#EDIP,;36 pin;861.6 mm²-40°C to +85°CSee data sheet
DS1270W-100IND#ActiveEDIP,;36 pin;861.6 mm²-40°C to +85°C
DS1270W-1503.3V, 150nsNo Longer AvailableDS1270W-100#EDIP,;36 pin;861.6 mm²0°C to +70°CSee data sheet
DS1270W-150#No Longer AvailableDS1270W-100#EDIP,;36 pin;861.6 mm²0°C to +70°C
DS1270W.pdf DS1270W
DS1270W.pdf DS1270W
DS1270W.pdf DS1270W
Low-Temperature Data Retention in Nonvolatile SRAM DS1270Y
Timing Considerations When Using NVSRAM DS1350Y
Tech. Brief 39: NV SRAM Cross Reference Table DS1270Y
NV SRAM Frequently Asked Questions DS1350Y
DS1270W.pdf DS1270W
DS1270W.pdf DS1270W