DS3231SN#T&R High-Accuracy Real Time Clock (RTC) – TCXO – I²C – SOIC-16 – Analog Devices

The DS3231SN#T&R from Analog Devices (Maxim Integrated) is a highly accurate, temperature-compensated I²C Real-Time Clock (RTC) featuring an integrated crystal oscillator and crystal. Designed for precision timekeeping, the device delivers an accuracy of ±2 ppm (0°C to +40°C) and ±3.5 ppm (–40°C to +85°C), ensuring outstanding long-term stability in demanding applications.

It communicates via a 400kHz Fast-Mode I²C interface and maintains full calendar functionality, including automatic leap-year correction through the year 2100. The DS3231SN includes two programmable alarms, a programmable square-wave output, and an integrated digital temperature sensor for enhanced system monitoring.

With support for battery-backup operation, the clock continues running even during power loss, making it ideal for embedded systems requiring uninterrupted timekeeping. The device is housed in a 16-pin SOIC (300 mil) surface-mount package suitable for high-density PCB layouts.

Key Features:

• Extremely accurate RTC with integrated TCXO and crystal

• Accuracy: ±2 ppm (0°C to +40°C), ±3.5 ppm (–40°C to +85°C)

• Full calendar with automatic leap-year adjustment

• Fast-mode I²C interface up to 400 kHz

• Two time-of-day alarms and programmable square-wave output

• Integrated digital temperature sensor (±3°C accuracy)

• Battery-backup input ensures continuous operation

• 2.3 V to 5.5 V supply voltage range

• 16-pin SOIC (300mil) SMD package

Package Includes:
1X DS3231SN#T&R RTC IC

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