M41T66Q6F

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Serial real-time clock (RTC) with alarm

Quantity $ per Unit Savings
1 - 9$2.360%
10 - 24$2.1310%
25 - 99$2.0115%
100 - 249$1.7227%
250 - 499$1.6132%
500$1.4140%
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In stock
$2.36
Parameter NameParameter Value
Operating RangeIndustrial
Supply Voltage Min Volt1.5
Supply Voltage Max Volt4.4
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius85.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
ROHS Compliance GradeEcopack2
GradeIndustrial
Package NameQFN-16L
Key features
  • Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century
  • 32 KHz crystal oscillator integrating load capacitance and high crystal series resistance operation
  • Oscillator stop detection monitors clock operation
  • Serial interface supports I2C bus (400 kHz)
  • 525 nA timekeeping current at 3 V
  • Low operating current of 35 μA (at 400 kHz)
  • Timekeeping down to 1.0 V
  • 1.3 V to 4.4 V I2C bus operating voltage
    • Allows use in lithium ion rechargeable applications
  • 32 KHz square wave on power-up to drive a microcontroller in low-power mode
  • Programmable (1 Hz to 32 KHz) square wave
  • Programmable alarm with interrupt function
  • Accurate programmable watchdog (from 62.5 ms to 31 min)
  • Software clock calibration to compensate deviation of crystal due to temperature
  • Automatic leap year compensation
  • Operating temperature of –40 to 85 °C
  • Lead-free 16-pin QFN package