The DS3231 RTC Module Precise Real Time Clock I2C AT24C32 without cell is an ultra-accurate real-time clock expansion board engineered for time-critical embedded systems and microcontroller…
The DS3231 RTC Module Precise Real Time Clock I2C AT24C32 without cell is an ultra-accurate real-time clock expansion board engineered for time-critical embedded systems and microcontroller applications. Powered by the Maxim DS3231 IC, it features an integrated Temperature-Compensated Crystal Oscillator (TCXO) that guarantees exceptional timekeeping stability by minimizing clock drift caused by ambient temperature changes.
Equipped with an onboard coin cell battery holder (CR2032/LIR2032 compatible, cell not included), this module preserves complete timekeeping data (seconds, minutes, hours, day, date, month, and year with leap-year compensation) during primary power loss. It also includes an onboard AT24C32 EEPROM providing 32Kb of non-volatile memory for data storage, alongside dual programmable alarms and a configurable square-wave output signal.
Communicating via standard I2C (SDA, SCL), the board operates seamlessly at both 3.3V and 5V logic levels. It is widely used in data logging systems, digital timers, automated scheduling relays, and IoT nodes, and is fully compatible with Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and general DIY electronics.
| Core Controller IC | Maxim DS3231 High-Precision Real-Time Clock IC |
|---|---|
| Integrated Oscillator | Internal Temperature-Compensated Crystal Oscillator (TCXO) |
| Operating Voltage | 3.3V to 5.5V DC (compatible with 3.3V and 5V logic) |
| Interface Bus | Standard I2C serial bus (SDA, SCL) operating up to 400kHz |
| Timekeeping Accuracy | ± 2ppm accuracy from 0°C to +40°C (approx. ± 1 minute per year) |
| Battery Holder | Integrated coin cell socket (Battery cell not included) |
| Additional Memory | Onboard AT24C32 EEPROM (32Kb / 4KB non-volatile storage) |
| Alarm & Signal Features | 2 programmable time-of-day alarms & configurable square-wave output (1Hz, 4.096kHz, 8.192kHz, 32.768kHz) |
What is the operating voltage?
3.3V to 5.5V DC (compatible with 3.3V and 5V logic).
Which interface does it use?
Standard I2C serial bus (SDA, SCL) operating up to 400kHz.
Is it compatible with Arduino and ESP32?
Yes. It works with Arduino, ESP32, ESP8266, Raspberry Pi projects.
Can I buy the DS3231 RTC Module Precise Real Time Clock I2C AT24C32 without cell in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.
