ADIDS1337+
Overview
The DS1337+ is a low-power, serial real-time clock (RTC) that provides full binary-coded decimal (BCD) clock and calendar information via an I2C interface. It manages seconds, minutes, hours, day, date, month, and year data with automatic compensation for leap years and months with fewer than 31 days. The device features two programmable time-of-day alarms and a square-wave output, making it a versatile timing solution for embedded systems.
Why Choose This Part
This RTC operates over a wide voltage range of 1.8V to 5.5V, allowing it to interface directly with both low-voltage MCUs and standard 5V logic. The 8-DIP package is ideal for through-hole prototyping and socketed applications where ease of replacement or breadboarding is required. It also includes an oscillator fail flag and internal power-sense circuitry to ensure timekeeping integrity.
Applications
Key Specifications
Getting Started
To use the DS1337+, connect a 32.768kHz crystal to the X1 and X2 pins and pull-up resistors to the SDA and SCL I2C lines. For software development, use standard I2C libraries such as the Wire library for Arduino or specialized RTC drivers available in MicroPython and C toolchains. The device address is fixed at 0xD0 for writes and 0xD1 for reads.
