DS3231
Every spec below is cited to the manufacturer datasheet. Pick your exact ordering code, compare the closest alternatives, then ask the assistant what it means for your design.
What the DS3231 family does
The DS3231 is an extremely accurate real-time clock featuring an integrated temperature-compensated crystal oscillator and I2C interface. Available in commercial and industrial temperature grades, it maintains precise timekeeping even during main power interruptions via a battery backup. Key specifications include ±2ppm accuracy from 0°C to +40°C, ±3.5ppm from -40°C to +85°C, and a 32.768 kHz output frequency. The device supports 3.3V operation with low active supply current of 200µA at 3.63V. It tracks seconds through year with leap-year compensation and offers two programmable time-of-day alarms. Engineers typically use this component in servers, utility power meters, telematics, and GPS systems requiring reliable time tracking.
DS3231 datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| supply voltage range | 2.3 V | 3 V | 5.5 V | Recommended Operating Conditions | ADI datasheet, p. 2 — Recommended Operating Conditions |
| operating temperature | 0 °C | — | 70 °C | ADI datasheet, p. 18 — Ordering Information | |
| clock frequency | — | 32.8 kHz | — | VCC = 3.3V or VBAT = 3.3V | ADI datasheet, p. 3 — Extremely Accurate I2C-Integrated RTC/TCXO/Crystal |
| rise time | — | — | 1 µs | Standard mode; (note 11) | ADI datasheet, p. 4 — AC Electrical Characteristics |