DS3231 Precision RTC Real Time Clock

Module DS3231 / AT24C32 Real Time Clock, this module is based on the DS3231 integrated circuit, which is an extremely accurate real-time clock and compensated in temperature (TCXO). It requires a lithium battery (not included) for its operation, which will last approximately 10 years, as long as the I2C interface is powered with 5V.

It does not use external glass or adjustment capacitors, since the DS3231 has an internal glass and a capacitor bank, which are automatically connected or disconnected according to the temperature of the glass, thus maintaining its frequency extremely stable in the face of temperature changes.

Specifications:

• Power supply voltage: 3.3V ~ 5V
• Main integrated: DS3231
• Includes AT24C32 memory (default address is 0x57)
• Memory Capacity: 32K
• Communication type: I2C
• Supports the calendar until the year 2100
• leap year compensation.
• Configurable time format in 12 or 24 hours
• 2 Configurable alarms
• Output frequency: 1 Hz and 32.768 KHz
• Internal temperature sensor accuracy: ± 3 °C

Does not include battery