Tiny Real-Time Clock/Calendar with Alarm Function, Battery Switch-Over, Time Stamp Input and I²C-Bus

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PCF85263A Block Diagram

PCF85263A Block Diagram

PCF85263A Application Diagram

PCF85263A Application Diagram


Key Features

  • UL Recognized Component (PCF85263ATL)
  • Provides year, month, day, weekday, hours, minutes, seconds and 100th seconds based on a 32.768 kHz quartz crystal
  • Stop-watch mode for elapsed time counting. From 100th seconds to 999999 hours
  • Two independent alarms
  • Battery back-up circuit
  • WatchDog timer
  • Three timestamp registers
  • Two independent interrupt generators plus predefined interrupts at every second, minute, or hour
  • Frequency adjustment via programmable offset register
  • Clock operating voltage: 0.9 V to 5.5 V
  • Low current; typical 0.28 μA at VDD = 3.0 V and Tamb = 25 °C
  • 400 kHz two-line I2>C-bus interface (at VDD = 1.8 V to 5.5 V)
  • Programmable clock output for peripheral devices (32.768 kHz, 16.384 kHz, 8.192 kHz, 4.096 kHz, 2.048 kHz, 1.024 kHz, and 1 Hz)
  • Configurable oscillator circuit for a wide variety of quartzes: CL = 6 pF, CL = 7 pF, and CL = 12.5 pF

Product Longevity Program

  • This product is included in the NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The PCF85263ATL/A is included in the 15-year program

Part numbers include: PCF85263AT, PCF85263ATL, PCF85263ATT, PCF85263ATT1, PCF85263AUK.


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