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home > DS3231 AT24C32 IIC Precision RTC | Real Time Clock Memory Module for Boards > DS3231 AT24C32 IIC Precision RTC | Real Time Clock Memory Module for Boards

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DS3231 AT24C32 IIC Precision RTC | Real Time Clock Memory Module for BoardsSpecification: Parameter Details RTC Chip DS3231 (Temperature compensated RTC with crystal) EEPROM Chip AT24C32 (32Kb = 4KB memory) Interface I2C (2 wire: SDA, SCL) I2C Address (RTC) 0x68 I2C Address (EEPROM) 0x50 Voltage Supply 3. 3V 5. 5V (compatible with 3. 3V or 5V logic systems) Timekeeping Accuracy 2 ppm from 0C to +40C (~1 minute year) Time Format 24 hour or 12 hour with AM PM Calendar Range Year, Month, Day, Weekday, Hour, Minute, Second Leap

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Specification:

Name: DS3231 AT24C32 IIC Precision RTC | Real Time Clock Memory Module for Boards
Brand: nocturne3limousines.fr
SKU: 24499297952
Price: 99.00 USD
Availability: InStock
Rating: 4.801 (340 reviews)

Parameter	Details
RTC Chip	DS3231 (Temperature-compensated RTC with crystal)
EEPROM Chip	AT24C32 (32Kb = 4KB memory)
Interface	I2C (2-wire: SDA, SCL)
I2C Address (RTC)	0x68
I2C Address (EEPROM)	0x50
Voltage Supply	3.3V – 5.5V (compatible with 3.3V or 5V logic systems)
Timekeeping Accuracy	±2 ppm from 0°C to +40°C (~1 minute/year)
Time Format	24-hour or 12-hour with AM/PM
Calendar Range	Year, Month, Day, Weekday, Hour, Minute, Second
Leap Year Compensation	Automatic (until year 2100)
EEPROM Size	32Kbit (4096 bytes)
Battery Backup	CR2032 (not included)
Battery Voltage Range	2.3V to 3.5V
Temperature Sensor Range	-40°C to +85°C (±3°C accuracy)
Clock Output	32kHz and 1Hz square wave (programmable)
Dimensions	~38mm × 22mm × 14mm
Mounting Type	Through-hole pins (header compatible)
Applications	Clocks, data loggers, alarms, timers, IoT, industrial systems

Features:

DS3231 RTC with integrated temperature compensation and crystal.
Highly accurate: ±2 ppm, better than DS1307/DS1302 RTCs.
AT24C32 EEPROM with 4KB storage for saving custom data.
Operates over I2C interface – simple to connect and program.
Battery backup support via CR2032 keeps clock running offline.
Programmable square-wave output (1Hz to 32kHz) for timing tasks.
Compatible with ESP32, STM32, Pi, etc.
Compact design, perfect for embedded real-time tracking systems.

Description:

The DS3231 AT24C32 IIC RTC Module is a high-precision Real-Time Clock (RTC) module that combines the DS3231 RTC chip with an AT24C32 EEPROM (32Kb) on a single I2C bus. It provides highly accurate timekeeping and non-volatile memory storage for data logging or configuration settings.

The DS3231 RTC is a temperature-compensated, battery-backed real-time clock capable of maintaining time down to seconds, minutes, hours, day, date, month, and year with leap year correction. Unlike many RTCs, it includes an integrated crystal oscillator and temperature sensor, which ensures excellent accuracy of ±2ppm (≈1 minute/year).

The onboard AT24C32 EEPROM offers 32 kilobits (4 kilobytes) of non-volatile memory, accessible over the same I2C interface. This allows you to store configuration parameters, logs, or sensor calibration data permanently.

A CR2032 coin cell battery holder is provided, which allows the module to keep time even when external power is off, making it ideal for data-logging systems, alarms, timers, and real-time tracking systems.