ITEM NAME:Clock module ds1302 real-time clock module CR1220 battery holder A5D6 Clock module ds1302 real-time clock module CR1220 battery holder A5D6 DS1302 main performance indicators: Real-time clock with the ability to calculate before 2100, minutes, hours, days, weeks, months, years of ability, as well as leap year adjustment ability 31 8-bit temporary data storage RAM Serial I / O port mode makes the number of pins Z less Wide operating voltage 2.0 5.5V Working current 2.0V, less than 300nA Read / write clock or RAM data when there are two kinds of transmission mode single byte transmission and multi-byte transmission character group mode 8-pin DIP package or optional 8-pin SOIC package according to surface mount Simple 3-wire interface Compatible with TTL Vcc = 5V Optional industrial temperature range -40 +85 Dual power supply for mains and backup power supplies Wiring method (to provide the program as an example, you can take any IO port, in the process of modifying the port can be defined): VCC → + 5V / 3.3V GND → GND CLK → P02 DAT → P01 RST → P00 Precautions: 1.VCC and GND do not reverse, so as not to burn the chip 2.51 microcontroller P0 port need to pull on the resistor, if your microcontroller is not connected to the pull-up resistor, you can connect the data cable to other ports with DS1302 chip and spare battery, before the test has been tested good function Material:Metal Size: 25 x 15.7 x 10mm Colour: Blue Package Contents: 1 x DS1302 real-time clock module 5 x DuPont line color random Note: Random color, don't accept the specified color. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
