Weight: Size: 38mm (length) * 22mm (width) * 14mm (height)
Working voltage: 3.3--5.5V
Clock accuracy: within the range of 0-40, accuracy is 2ppm, and the annual error is about 1 minute
Package: A DS3231 module
Clock chip: high-precision clock chip DS3231
Memory chip: AT24C32 (storage capacity 32K).
The IIC bus interface is a high transmission speed of 400KHz (when the working voltage is 5V).
Other IIC devices can be cascaded, the 24C32 address can be modified by short-circuiting A0/A1/A2, and the default address is 0x57.
With battery CR2032, to ensure that the clock still moves normally after the system is powered off.
On May-15-21 at 19:00:31 PDT, seller added the following information: