DS1265W:3.3V 8Mb Nonvolatile SRAM

The DS1265W 8Mb nonvolatile (NV) SRAMs are 8,388,608-bit, fully static, NV SRAMs organized as 1,048,576 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
  • 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 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
DS1265W: Pin Assignment
DS1265W: Pin Assignment
titleDownload file
DS1265W Data SheetDS1265W.pdf
Errata DS1265W1265WB.pdf
Part NumberMemory TypeMemory SizeBus TypeVSUPPLY
minmaxSee Notes
DS1265WNV SRAM1M x 8Parallel33.6EDIP/36$78.49 @1k
Quality and Environmental Data
Related Products
Ordering Information
Part NumberNotesStatusRecommended ReplacementPackageTempRoHS
DS1265W-1003.3V, 100nsNo Longer AvailableDS1265W-100+EDIP,;36 pin;861.6 mm²0°C to +70°CSee data sheet
DS1265W-100+ActiveEDIP,;36 pin;861.6 mm²0°C to +70°CLead Free
DS1265W-100IND3.3V, 100nsNo Longer AvailableDS1265W-100IND+EDIP,;36 pin;861.6 mm²-40°C to +85°CSee data sheet
DS1265W-100IND+ActiveEDIP,;36 pin;861.6 mm²-40°C to +85°CLead Free
DS1265W-1503.3V, 150nsNo Longer AvailableDS1265W-100+EDIP,;36 pin;861.6 mm²0°C to +70°CSee data sheet
DS1265W-150+ActiveEDIP,;36 pin;861.6 mm²0°C to +70°CLead Free
DS1265W.pdf DS1265W
1265WB.pdf DS1265W
DS1265W.pdf DS1265W
DS1265W.pdf DS1265W
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
DS1265W.pdf DS1265W
1265WB.pdf DS1265W