5PCS DS3231 Real Time Clock Module RTC Sensor High Precision AT24C32 IIC Timer Alarm Clock for Arduino Raspberry Pi

Description

Product Description
Size: 38mm (length) * 22mm (W) * 14mm (height)
Operating voltage: 3.3-5V
Clock chip: high-precision clock chip DS3231(there are 3 different chips for this clock module, DS3231N,DS3231SN and DS3231M, 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

Pin Description:
32KHz：32KHz output
SQW：Active LOW Interrupt or Square wave output
SCL：Serial Clock Input
SDA：Serial Data I/O
VCC：DC Power Pin
GND：Ground

Describe:

Voltage: 3.3-5V, Memory chips: AT24C32 (storage capacity 32K)
Document link: http://tronixlabs.com/breakout-boards/real-time-clock/ds3231-real-time-clock-module/
About battery type: Battery is not included, you can use CR2032 or LIR2032 battery
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.
Clock chip: high-precision clock chip DS3231(there are 3 different chips for this clock module, DS3231N,DS3231SN and DS3231M, we send it by randomly.