DS1302 Real-time Clock Module

The DS1302 is a trickle charge clock chip from Dallas that provides a real-time clock/calendar and 31 bytes of fixed RAM to communicate with the microcontroller via a simple serial interface. The real-time clock/calendar cycle provides seconds, minutes, hours, days, weeks, months, years, months, days, leap year data, and the number of days is automatically adjusted. Clock operation can be set to 24 or 12 hour format by AM/PM indication(1) RST reset(2) I/O data line(3) SCLK series clock(1) RST reset(2) Data line I/O(3) SCLK series clock Clock/RAM Read/write data in byte or burst communication, up to 31 bytes. Power consumption DS1302 keeps data and clock data very low when the power is less than 1mwhour, real-time use of 2100 can calculate the previous second, minute, hour, day, week, month, year, 8-bit temporary port data storage capability, 31Mod serial I/ O Make the number of pins at least 2.0V wide working voltage, current 2.0V, less than 300nabread/write hours or RAM data, there are single-byte data transfer mode and multi-byte transfer mode 8pin setting or 8pin SOIC setting two, according to the interface selection . MountEasy3 line TTL compatible surface VCC=5v optional industrial temperature range -40+85 square power main and standby power supply DS1302 clock module real-time parameters are as follows: 1.PCB is a single panel, size: 44mm*23mm*1.6mm2. There are 4 diameters 3.1 mm3 hole. Backup battery CR2032 natural space ball, voltage 3V power 260mAh non-rechargeable theoretical holding time for more than 10 years! 4. Crystal oscillator 32.768KHz, imported from Japan, 6pF matching capacitor, size 2*6mm5 DS1302 8-Pin plug-in large chip, the chip is made under the IC block, easy to replace and install the chip 6. Voltage module, wiring 7 is used for electrical work. MCU 3.3V / 5V & 5V & 3.3V Operating temperature: 0° --- 70° Package: 1 x DS1302 real-time clock module Wiring (such as programming can be connected to any IO port, programmable editing port definition): VCC → +5V / 3.3vgnd → gndclk → P02DAT → P01RST → P00