RTC I2 C-bus*1 full feature/function clock IC
Discontinued Products are limited to existing inventory.
The WF8592A is an I2 C-bus*1 serial interface conforming, high-precision real-time clock (RTC) IC with a built-in 32.768 kHz digital temperature-compensated, crystal oscillator circuit. In addition to clock and calendar functions, it is equipped with an alarm interrupt function, fixed-cycle timer interrupt function, time update interrupt function, clock output function, and supply voltage detection function. *1. I2 C-bus is a registered trademark of NXP Semiconductors.
Key Features
  • High frequency accuracy over temperature: ±5.0ppm -40°C~+85°C, ±7.0ppm -40°C~105°C
  • Temperature compensation operating supply voltage: 2.0 to 5.5V
  • Clock operating supply voltage: 1.3 to 5.5V
  • I2 C-bus serial interface operating supply voltage: 1.5 to 5.5V
  • I2 C-bus serial interface corresponding to fast data transfer: 400 kHz fast-mode compatible
  • Low current consumption: 0.6µA (typical) (VDD=3V, 30s temperature compensation interval, clock output disabled)
  • Clock function: hour, minute, second
  • Calendar function with auto leap year adjustment: year, month, day, day of week
  • Alarm interrupt function: day, day of week, hour, minute
  • Time update interrupt function: minute, second
  • Fixed-cycle timer interrupt function: 244.14µs to 255min
  • Clock output function: 32.768 kHz, 1024Hz, 32Hz, 1Hz
  • Supply voltage detection function: 2.0V temperature compensation operating voltage detection, 1.5V low supply voltage detection
  • -40 to 85°C operating temperature range
  • Best of class performance
  • Excellent temperature stability
  • Full featured RTC
  • low current consumption
Typical Applications
  • Industrial
  • Remote equipment installations
  • Wireless security
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