1 mô đun đồng hồ thời gian thực RTC DS1302 cho AVR ARM PIC SMD Arduino tại Lotte Market

Giới thiệu 1 mô đun đồng hồ thời gian thực RTC DS1302 cho AVR ARM PIC SMD Arduino tại Lotte Market

1pcs Clock Module DS1302 Real Time Clock Module for arduino UNO MEGA Development Board Diy Starter Kit

DS1302 real-time clock module:
The DS1302 is a trickle charge clock chip from DALLAS that includes a real-time clock/calendar and 31-byte static RAM that communicates with the microcontroller via 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 per month and the number of days in leap years are automatically adjusted. Clock operation can be determined by the AM/PM indication in 24- or 12-hour format. The DS1302 can communicate with the microcontroller simply by synchronous serialization. Only three port lines are required: (1) RST reset (2) I/O data line (3) SCLK serial clock. The clock/RAM read/write data is communicated in one byte or up to 31 bytes of bursts. The DS1302 consumes very low power while maintaining data and clock information with less than 1mW of power.

DS1302 main performance indicators:
The real-time clock has the ability to calculate seconds, minutes, hours, days, weeks, months, and years before 2100 years, as well as the ability to adjust for the following year.
31 8-bit temporary data storage RAM
Serial I/O port method minimizes the number of pins
Wide working voltage 2.0 5.5V
Less than 300nA when working current is 2.0V
There are two ways of transferring single-byte transfer and multi-byte transfer character groups when reading/writing clock or RAM data.
8-pin DIP package or optional 8-pin SOIC package based on surface mount
Simple 3-wire interface
Compatible with TTL Vcc=5V
Optional industrial temperature range -40 +85
Dual power supply tube for mains and backup power supply
The parameters of the DS1302 real-time clock module are as follows:

1.PCB is a single panel, size: 44mm*23mm*1.6mm
2. With 4 positioning holes, diameter 3.1mm
3. The backup battery is genuine celestial CR2032, voltage 3V, current 260mAh, non-rechargeable battery. Theoretical data retention time is greater than 10 years!
4. Crystal oscillator 32.768KHz, Japan imported crystal oscillator, matching capacitor is 6pF, size 2*6mm
5.DS1302 is 8-pin in-line domestic large chip, IC seat under the chip, easy to replace and plug the chip
6. The module working voltage is compatible with 3.3V/5V, which can be connected with 5V and 3.3V MCU.
7. Working temperature: 0°---70°
Wiring method (taking the provided program as an example, you can connect any IO port and modify the port definition in the program):

VCC→+5V/3.3V
GND→GND
CLK→P02
DAT→P01
RST→P00

Precautions:
1. Do not reverse the VCC and GND to avoid burning the chip.
The P0 port of the 2.51 MCU needs to be connected to the pull-up resistor. If your MCU does not have a pull-up resistor, you can connect the data cable to other ports.