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M41ST85WMX6TR

M41ST85WMX6TR

M41ST85WMH6F

Active

3.0/3.3 V I²C combination real-time clock, NVRAM supervisor and microprocessor supervisor

Quantity $ per Unit Savings
1 - 9$8.430%
10 - 24$7.748%
25 - 99$7.738%
100 - 249$6.7020%
250 - 499$6.3924%
500$6.3125%
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Out of stock
$8.43
Parameter NameParameter Value
Operating RangeIndustrial
Supply Voltage Min Volt2.7
Supply Voltage Max Volt3.6
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius85.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
ROHS Compliance GradeEcopack1
GradeIndustrial
Package NameSO-28
Key features
  • Automatic battery switchover and WRITE protect for:
    • Internal serial RTC and
    • External low power SRAM (LPSRAM)
  • 400 kHz I2C serial interface
  • 3.0/3.3 V operating voltage
    • VCC= 2.7 to 3.6 V
  • Ultralow battery supply current of 500 nA (max)
  • RoHS compliant
    • Lead-free second level interconnect
  • Serial RTC features
    • 400 kHz I2C
    • 44 bytes of general purpose NVRAM
    • Counters for:
      • Seconds, minutes, hours, day, date, month, and year
      • Century
      • Tenths/hundredths of seconds
      • Clock calibration register allows compensation for crystal variations over temperature
    • Programmable alarm with repeat modes
      • Functions in battery back-up mode
    • Power-down timestamp (HT bit)
    • 2.5 to 5.5 V oscillator operating voltage
  • Microprocessor supervisor features
    • Programmable watchdog
      • 62.5 ms to 128 s time-out period
    • Early power-fail warning circuit (PFI/PFO) with 1.25 V precision reference
    • Power-on reset/low voltage detect
      • Open drain reset output
      • Reset voltage, VPFD= 2.60 V (nom)
      • Two reset input pins
      • Watchdog can be steered to reset output
  • NVRAM supervisor features
    • Non-volatizes external LPSRAM
      • Automatically switches to back-up battery and deselects (write-protects) external LPSRAM via chip-enable gate
      • Power-fail deselect (write protect) voltage, VPFD= 2.60 V (nom)
      • Switchover, VSO= 2.50 V (nom)
    • Battery monitor (battery low flag)
  • Other features
    • Programmable squarewave generator (1 Hz to 32 KHz)
    • –40°C to +85°C operation
    • Package options:
      • 28-lead SNAPHAT®IC (SOH28) SNAPHAT battery/crystal top to be ordered separately
      • 28-lead