arduino M458 DS1302 Precision Real Time Clock Module With CR2032 Timer Counter and Clock Electronic Hobby Kit

Real time clock with the year 2100 to calculate the seconds, minutes, hours, days, weeks, months, years, the ability, as well as the ability to leap year adjustment Read / write clock or RAM data transmission when there are two single-byte transmit and multi-byte character sets transfer mode 8-pin DIP package or optional 8-pin SOIC package assembly according to the surface Working Temperature: 0℃~+70℃ Operating Voltage Range:3.3v ~ 5V Note : Do not reverse VCC and GND, will it cause damage It requires a pull-up resistor for P0 port of 51 MCU, if without, you can connect the data cable to other terminal