RTC stands for real time clock folks. The DS3234 is a low-cost, extremely accurate SPI bus RTC with an integrated temperature compensated crystal oscillator (TCXO) and crystal. And yes, a breakout board is coming soon. Features: * Battery Backup Input for Continuous Timekeeping * High-precision (±2ppm) * Operating Temperature Range 0°C to +70°C * Low-Power Consumption * Real-Time Clock Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Valid Up to 2099 * Two Time-of-Day Alarms * Programmable Square-Wave Output * 4MHz SPI Bus Supports Modes 1 and 3 * Digital Temp Sensor Output: ±3°C Accuracy * Register for Aging Trim * Active-Low RST Input/Output * 300-Mil, 20-Pin SO Package Documents: * Datasheet https://elecena.pl/product/1158224/real-time-clock-ds3234 2010-08-31 https://elecena.pl/product/1158224/real-time-clock-ds3234 2016-11-25 https://elecena.pl/product/1158224/real-time-clock-ds3234 2016-11-28 https://elecena.pl/product/1158224/real-time-clock-ds3234 2016-11-29 https://elecena.pl/product/1158224/real-time-clock-ds3234 2016-12-09 https://elecena.pl/product/1158224/real-time-clock-ds3234 2016-12-13 https://elecena.pl/product/1158224/real-time-clock-ds3234 2017-11-24 https://elecena.pl/product/1158224/real-time-clock-ds3234 2017-11-28 https://elecena.pl/product/1158224/real-time-clock-ds3234 2018-05-05 https://elecena.pl/product/1158224/real-time-clock-ds3234 2018-11-21 https://elecena.pl/product/1158224/real-time-clock-ds3234 2018-11-27 https://elecena.pl/product/1158224/real-time-clock-ds3234 2022-02-22 https://elecena.pl/product/1158224/real-time-clock-ds3234 2025-05-21 https://elecena.pl/product/1158224/real-time-clock-ds3234 2025-05-24