DS1250W

3.3V 4096k Nonvolatile SRAM


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Description

The DS1250W 3.3V 4096k NV SRAM is a 4,194,304-bit, fully static, nonvolatile SRAM organized as 524,288 words by 8 bits. Each NV SRAM has a self-contained lithium energy source and control circuitry, which 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. DIP-package DS1250W devices can be used in place of existing 512k x 8 static RAMs directly conforming to the popular bytewide 32-pin DIP standard. DS1250W devices in the PowerCap Module package are directly surface mountable and are normally paired with a DS9034PC PowerCap to form a complete Nonvolatile SRAM module. There is no limit on the number of write cycles that can be executed and no additional support circuitry is required for microprocessor interfacing.
DS1250W: Pin Assignment DS1250W: Pin Assignment Enlarge+

Key Features

  • 10 years minimum data retention in the absence of external power
  • Data is automatically protected during power loss
  • Replaces 512k x 8 volatile static RAM, EEPROM or Flash memory
  • Unlimited write cycles
  • Low-power CMOS
  • 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 temperature range of -40°C to +85°C, designated IND
  • JEDEC standard 32-pin DIP package
  • PowerCap Module (PCM) package
    • Directly surface-mountable module
    • Replaceable snap-on PowerCap provides lithium backup battery
    • Standardized pinout for all nonvolatile SRAM products
    • Detachment feature on PCM allows easy removal using a regular screwdriver
Part NumberMemory TypeMemory SizeBus TypeVSUPPLY
(V)
VSUPPLY
(V)
Package/PinsBudgetary
Price
minmaxSee Notes
DS1250W NV SRAM512K x 8Parallel33.6
MOD/32
PWRCP/34
$53.90 @1k
See All Memory (EPROM, EEPROM, ROM, NV SRAM) (52)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

CAD Symbols and Footprints

  • DS1250W-100+
  • DS1250W-100IND+
  • DS1250W-150+
  • DS1250WP-100+
  • DS1250WP-100IND+
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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