DS1302 RTC Real Time Clock Module with battery

<p>DS1302 is DALLAS company launched a trickle charge clock chip, containing a real-time clock/calendar and 31 bytes of static RAM, communicating through serial interface simple and single-chip microcomputer. The real-time clock/calendar circuit provides seconds, hours, days, weeks, months, years of information, a number of days in the month and leap year can automatically adjust. The clock operation instructions through the AM/PM decided to use 24 or 12-hour format.</p> <p>Between DS1302 and single-chip microcomputer can simply use synchronous serial communication method, only three lines:<br />(1) RST<br />(2) I/O reset the data line<br />(3) SCLK serial clock.</p> <p>Clock /RAM read/write data to a byte character set or as many as 31-byte communication. DS1302 work power consumption is very low to keep the data and clock information when power is less than 1mW</p> <p>Wiring method (to provide procedures, for example, can pick up any IO port, in the procedure to modify the port definitions :</p> <p>VCC:+5V/3.3V<br />GND: GND<br />CLK: P02<br />DAT: P01<br />RST: P00</p> <h5><strong>Note:</strong></h5> <p>1.VCC and GND do not reverse, so as not to burn the chip<br />2.51 SCM P0 port to receive a pull-up resistor, if your computer is not connected pull-up resistor, the data can be the string to the other port.</p> <hr /> <h4><strong>Specifications and Features:</strong></h4> <ol> <li>The real-time clock counts minutes, seconds, date, hours, month day of the week, year and leap-year compensation up to 2100.</li> <li>318 temporary data storage RAM</li> <li>Working current of 2.0V, less than 300nA</li> <li>Read / Write clock or RAM data with two kinds of mode of single-byte transfer mode and multi-byte character set</li> <li>8 pin DIP package or optional 8 pin SOIC package based on the surface assembly</li> <li>Simple 3 wire interface</li> <li>Compatible with TTL Vcc=5V</li> <li>Double power supply pipe for main power and backup power supply.</li> </ol> <hr /> <h5><strong>Useful Links:</strong></h5> <p><strong><a title=""Arduino DS1302 Real Time Clock"" href=""http://arduino.cc/playground/Main/DS1302"" target=""_new"" rel=""noopener noreferrer"">Arduino DS1302 Real Time Clock </a></strong><br /><strong><a title=""Using the Real Time Clock module on Raspberry Pi"" href=""http://www.hobbytronics.co.uk/tutorials-code/raspberry-pi-tutorials/raspberry-pi-real-time-clock"" target=""_blank"" rel=""noopener"">Using the Real-Time Clock module on Raspberry Pi</a></strong></p> <hr /> <h4><strong>Package Includes:</strong></h4> <p>1 x DS1302 RTC Real Time Clock Module with Battery</p>