New RTC DS1302 Real Time Clock Module RTC with battery CR2032 arduino

Detail New RTC DS1302 Real Time Clock Module RTC with battery CR2032 arduino

Deskripsi New RTC DS1302 Real Time Clock Module RTC with battery CR2032 arduino

DS1302 is a trickle charge clock chip launched by DALLAS. It contains a real-time clock / calendar and 31 bytes of static RAM. It communicates with the microcontroller through a simple serial interface. The real-time clock / calendar circuit provides information on seconds, minutes, hours, days, weeks, months, and years. The number of days in each month and days in leap years can be adjusted automatically. Clock operation can be decided by AM / PM instruction in 24 or 12 hour format. The communication between DS1302 and the single chip can be carried out in a synchronous serial manner. Only three lines are required: (1) RST reset (2) I / O data line (3) SCLK serial clock. Clock / RAM read / write data is communicated in one-byte or up to 31-byte character groups. When DS1302 is working, the power consumption is very low. When the data and clock information are kept, the power is less than 1mW.

DS1302 main performance indicators:
★ The real-time clock has the ability to calculate seconds, minutes, hours, days, weeks, months, and years before 2100, as well as the ability to adjust leap years
★ 31 8-bit temporary data storage RAM
★ Serial I / O port mode minimizes the number of pins
★ Wide range working voltage 2.0 5.5V
★ When working current is 2.0V, less than 300nA
★ There are two transfer methods for reading / writing clock or RAM data: single-byte transfer and multi-byte transfer character set
★ 8-pin DIP package or optional 8-pin SOIC package according to surface mounting
★ Simple 3-wire interface
★ Compatible with TTL Vcc = 5V
★ Optional industrial temperature range -40 +85
★ Dual power tubes are used for main power supply and backup power supply
The parameters of the DS1302 :
1.PCB is a single panel, size: 44mm * 23mm * 1.6mm
2. With 4 positioning holes, diameter 3.1mm
3. The spare battery is genuine celestial CR2032, voltage 3V, current 260mAh, non-rechargeable battery. The theoretical data retention time

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