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TCXO RTC, about ±2 min/year
| Part number | DS3231 Precision I2C RTC |
|---|---|
| Category | Integrated Circuits › I/O Expander & Bus ICs |
| Package | SOIC-16W |
| Pins | 16 |
DS3231 Precision I2C RTC pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | 32KHZ | output | |
| 2 | VCC | power | |
| 3 | ~INT/SQW | output | |
| 4 | ~RST | bidirectional | |
| 5 | GND | ground | |
| 6 | GND | ground | |
| 7 | GND | ground | |
| 8 | GND | ground | |
| 9 | GND | ground | |
| 10 | GND | ground | |
| 11 | GND | ground | |
| 12 | GND | ground | |
| 13 | GND | ground | |
| 14 | VBAT | power | |
| 15 | SDA | bidirectional | |
| 16 | SCL | input |
Schematic symbol and footprint
Schematic symbol
Footprint: SOIC-16W_7.5x10.3mm_P1.27mm — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.