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3 V NVRAM supervisor for LPSRAM

Quantity $ per Unit Savings
1 - 9$8.540%
10 - 20$7.7110%
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Parameter NameParameter Value
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius85.0
Packing TypeTape And Reel
RoHs compliantEcopack2
Package NameSO-16

The M40SZ100W NVRAM controller is a self-contained device which converts a standard low-power SRAM into a non-volatile memory. A precision voltage reference and comparator monitors the VCCinput for an out-of-tolerance condition.

When an invalid VCCcondition occurs, the conditioned chip enable output (ECON)is forced inactive to write protect the stored data in the SRAM. During a power failure, the SRAM is switched from the VCCpin to the external battery to provide the energy required for data retention. On a subsequent power-up, the SRAM remains write-protected until a valid power condition returns.

Key features
  • Convert low power SRAMs into NVRAMs
  • 3 V operating voltage
  • Precision power monitoring and power switching circuitry
  • Automatic write-protection when VCCis out-of-tolerance
  • Choice of supply voltage and power-fail deselect voltage:
    • VCC= 2.7 to 3.6 V; 2.55 V ≤ VPFD≤ 2.70 V
  • Reset output (RST) for power on reset
  • 1.25 V reference (for PFI/PFO)
  • Less than 15 ns chip enable access propagation delay
  • Battery low pin (BL)
  • RoHS compliant
    • Lead-free second level interconnect