ADIDS1337C
Overview
The DS1337C is an I2C real-time clock (RTC) featuring an integrated crystal to ensure timing accuracy without requiring external tuning components. It provides full clock and calendar functions including seconds, minutes, hours, day, date, month, and year with leap-year compensation valid up to 2100. The device supports a wide operating voltage from 1.8V to 5.5V and includes dual time-of-day alarms.
Why Choose This Part
The primary benefit of the DS1337C is the integrated 32.768kHz crystal within the 16-pin SOIC package, which eliminates frequency errors caused by improper PCB layout or stray capacitance. It operates across a wide 1.8V to 5.5V supply range and includes an oscillator stop flag to alert the system of potential timing data corruption if power is interrupted.
Applications
Key Specifications
Getting Started
To implement the DS1337C, connect the SCL and SDA pins to your microcontroller I2C bus with appropriate pull-up resistors. Because the crystal is internal, no external load capacitors are required, simplifying PCB design. Use the programmable square-wave output, which defaults to 32kHz, to provide a stable clock source for other system peripherals.
