Operational temperature from 0 to +70℃ ℃
Communication interface I2C
Battery backup One 3V coin cell battery batter holder
Digital temp sensor ±3°C Accuracy
Programmable square-wave 32kHz [Output]
Time of day alarms 2
Low power consumption less then 1mA
Dimensions 34 x 23 x 18mm [1.3 x 09 x 07in]
The module consists of a DS3231 RTC Clock chip and Atmel AT24C32
EEPROM chip. The AT24C32 has memory storage capacity of 32kB and
uses the I2C bus interface with 0x57 address which can be modified. It has
a capability of setting the time and date, checking and clearing alarms and
logging data with a timestamp.
The module has a battery holder for one 3V coin cell battery and the battery
is included with the module. The battery serves as back-up power supply for
the module. When external power supply is turned OFF, the automatic
detection on-board chip switches to battery back-up.
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