Is DS3231 High Precision Real-Time Clock Compatible with Arduino Ecosystem?
Electrical Specifications
Always confirm pin assignments against the manufacturer datasheet before wiring.
Compatibility Overview
Battery-backed RTC IC maintaining sub-second clock accuracy during power outages and off-grid offline operation.
Typical I²C Wiring Reference
Standard I²C signal names. This is a bus reference, not a pinout for this specific board — check the silkscreen and datasheet for its actual pin order.
Reference circuit only. A shifter is needed when the host and peripheral run at different logic levels — check both datasheets to confirm whether this applies to your pairing.
Technical Specification Matrix
| Feature / Attribute | Specification / Status |
|---|---|
| Hardware Protocol | I2C Bus / 3.3V |
| Bridge Required | NO |
| Border Router Needed | None |
| Hardware Capabilities & Peripherals | Real-Time Clock Backup Battery Voltage Alarm Interrupt Discovered by the integration at pairing time. Which of these appear depends on your integration and its version. |
| Pairing Complexity | Plug-and-Play |
| Factory Reset Instruction | Hold BOOT button for 2s. |
Report an Error or Share What You Found in Practice
Does the reset sequence not work, an entity not appear, or the compatibility verdict not match what you see with DS3231 High Precision Real-Time Clock? Report a correction to our index.