Description of RTC DS3234 From SparkFun USA The DS3234 is a high-precision, low-power real-time clock (RTC) integrated circuit that features an internal temperature-compensated crystal oscillator (TCXO) and crystal. Communicating via an SPI interface, this RTC chip delivers timekeeping accuracy of ±2 ppm, making it ideal for applications requiring dependable and accurate time tracking. It features dual alarms, a programmable square-wave output, and an integrated digital temperature sensor. Designed for direct integration onto printed circuit boards (PCBs), the DS3234 eliminates the need for external crystals or oscillators, simplifying circuit design while enhancing performance. Key Feature Integrated Crystal and TCXO — Provides ±2 ppm accuracy without the need for external components Battery Backup Support — Maintains accurate timekeeping during power loss Advanced Timekeeping Features — Includes dual alarms and leap year compensation up to the year 2099 SPI Interface — Supports high-speed SPI communication (up to 4 MHz) in Modes 1 and 3 Technical Specifications Parameter Specification Timekeeping Accuracy ±2 ppm Operating Temperature Range 0°C to 70°C Timekeeping Functions Seconds, Minutes, Hours, Day, Date, Month, Year (with leap year compensation through 2099) Alarm Features Two programmable time-of-day alarms Square-Wave Output Programmable frequency output Communication Interface SPI (Supports Modes 1 and 3) Maximum SPI Clock Speed 4 MHz Digital Temperature Sensor ±3°C accuracy Aging Trim Register Allows oscillator fine-tuning RST Function Active-low input/output pin Battery Backup Dedicated input pin for backup power Package Type 300-mil, 20-pin SO (Standard Outline) Documentation Datasheet: DS3234 Datasheet (PDF) Applications Embedded Microcontroller Systems Industrial Equipment Data Logging Devices Security Systems Consumer Electronics IoT Endpoints Packaging Details 1 × Real Time Clock DS3234 Attention This item is non-returnable. If it arrives damaged or is not functioning properly, please get in touch with us to determine if further action may be taken. Need Help? Our engineers are available to assist you. If you have any queries, please leave a comment below or call 09678110110 from 09:00 am to 08:00 pm (7 days a week). You can also reach us via Live Chat or Facebook Inbox.
