M41T00AUDD1F

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Serial real-time clock (RTC) with audio

Quantity $ per Unit Savings
1 - 9$3.890%
10 - 99$2.9624%
100 - 249$2.5734%
250 - 499$2.4338%
500$2.1944%
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Out of stock
$3.89
Parameter NameParameter Value
Operating RangeIndustrial
Supply Voltage Min Volt3.0
Supply Voltage Max Volt3.6
Operating Temp Min Celsius0.0
Operating Temp Max Celsius70.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
ROHS Compliance GradeEcopack2
GradeIndustrial
Package NameQFN-16L P 0.5 mm
Key features
  • Combination real-time clock with audio
    • Serial real-time clock (RTC) based on M41T00
    • Audio section provides:
      • 300 mW differential audio amplifier
      • 256 and 512 Hz tone generation
      • –33 to +12 dB gain, 3 dB steps (16 steps plus MUTE)
    • 0 °C to 70 °C operation
    • Small DFN16 package (5 mm x 4 mm)
  • Real-time clock details
    • Superset of M41T00
    • 3.0 to 3.6 V operation
      • Timekeeping down to 1.7 V
    • Automatic backup switchover circuit
      • Ultra-low 400 nA backup current at 3.0 V (typ)
      • Suitable for battery or capacitor backup
      • On-chip trickle charge circuit for backup capacitor
    • 400 kHz I2C bus
    • M41T00 compatible register set with counters for seconds, minutes, hours, day, date, month, years, and century
      • Automatic leap year compensation
      • HT bit set when clock goes into backup mode
    • RTC operates using 32,768 Hz quartz crystal
      • Calibration register provides for adjustments of –63 to +126 ppm
      • Oscillator supports crystals with up to 40 kΩ series resistance, 12.5 pF load capacitance
    • Oscillator fail detect circuit OF bit indicates when oscillator has stopped for four or more cycles
  • Audio section
    • Power amplifier
      • Differential output amplifier
      • Provides 300 mW into 8 Ω(THD+N = 2% (max), fin= 1 kHz)
    • Summing node at audio input
      • Inverting configuration with summing resistors into the minus (-) terminal
      • 0 dB gain with 10 kΩ feedback resistor and 20 kΩ input summing resistors
      • Signal input centered at VDD/2
      • 1.6 VP-Panalog input range (max)
    • 256 or 512 Hz signal multiplexing with analog input to provide audio with beep tones
    • Volume control, 4-bit register
      • Allows gain adjustment from –33 dB to +12 dB
      • 3 dB step