Voltage: 3.3-5V, Memory chips: AT24C32 (storage capacity 32K). Clock accuracy: 0-40℃, accuracy 2ppm, annual error about 1 minute. Clock chip: high-precision clock chip DS3231SN. Can be cascaded with other IIC devices.The 24C32 address can be modified by shorting A0 / A1 / A2. About battery type: Battery is not included. Feature: The DS3231 is an RTC IC developed by Maxim Integrated. It is a low cost, extremely accurate RTC IC with communication over I2C Interface. An interesting feature of DS3231 RTC IC is that it has integrated crystal oscillator and temperature sensor and hence you don’t have to connect an external crystal. The product documentation link cannot be displayed. If you need technical documentation,please click “Ask a question” to em-ail us Product Description:
Size: 38mm (length) * 22mm (W) * 14mm (height)
Operating voltage :3.3 - 5 .5 V
Clock chip: high-precision clock chip DS3231(there are 3 different chips for this clock module,
DS3231SN, we send it by randomly
Clock Accuracy :0-40 ℃ range, the accuracy 2ppm, the error was about 1 minute
Calendar alarm clock with two
Programmable square-wave output
Real time clock generator seconds, minutes, hours, day, date, month
and year timing and provide valid until the year 2100 leap year compensation
Chip temperature sensor comes with an accuracy of ± 3 ℃
Memory chips: AT24C32 (storage capacity 32K)
IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V)
Can be cascaded with other IIC device, 24C32 addresses can be shorted A0/A1/A2 modify default address is 0x57
Wiring instructions (with Arduino uno r3 for example):
SCL → A5
SDA → A4
VCC → 5V
GND → GND
Document link: http://tronixlabs.com/breakout-boards/real-time-clock/ds3231-real-time-clock-module/
Note: Battery is not included
Package Included:
2 x DS3231 Clock module