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RTC DS1302 Real Time Clock Module for Arduino AVR ARM PIC SMD

RTC DS1302 Real Time Clock Module for Arduino AVR ARM PIC SMD

SKU: 417961
  • US$2.44

    27 %

  • 1.79
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RTC DS1302 Real Time Clock Module for Arduino AVR ARM PIC SMD
RTC DS1302 Real Time Clock Module for Arduino AVR ARM PIC SMD

RTC DS1302 Real Time Clock Module for Arduino AVR ARM PIC SMD

US$1.79 US$2.44 27%OFF 5 (6 reviews)
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DS1302 real time clock module
DALLAS DS1302 is the company launched trickle charge the clock chip, which contains a real-time clock / calendar and 31 bytes of static RAM, via a simple serial interface to communicate with the microcontroller. Real-time clock / calendar circuit provides seconds, minutes, hours, days, weeks, months, years of information, the number of days per month and leap year automatically adjust the number of days. Clock operation by AM / PM indicator decided to use 24 or 12 hour format. DS1302 between the microcontroller can simply adopt the way synchronous serial communication port only used three lines: (1) RST Reset (2) I / O data lines (3) SCLK Serial Clock. Clock / RAM read / write data in a byte or up to 31 bytes of character set type communication. DS1302 work to maintain low power consumption data and clock information when power is less than 1mW
DS1302 key performance indicators:
    Real-time clock with energy calculations before 2100 seconds, minutes, hours, day, week, month, year capacity, as well as the ability to leap year adjustment
     serial I / O ports such a way that a minimum number of pins
    Wide operating voltage range 2.0 5.5V
    2.0V, operating current of less than 300nA
     Read / write clock or RAM data transfer mode, there are two single-byte and multi-byte transfer mode transmission character set
    8-pin DIP package or an optional 8-pin SOIC surface mount package under
    Simple 3-wire interface
     Vcc = 5V and TTL compatible
     Optional industrial temperature range of -40 to +85
    Dual power tubes used for the main power supply and backup power supply
DS1302 real time clock module parameters are as follows:
    1. PCB single panel, size: 44mm * 23mm * 1.6mm
    2. With four positioning holes, diameter 3.1mm
    3. Backup battery is genuine celestial CR2032, Voltage 3V, current 260mAh, non-rechargeable batteries. Theoretical data retention time is more than 10 years!
    4. Crystal 32.768KHz, Japan imported crystal, matching capacitance 6pF, size 2 * 6mm
    5. DS1302 is made large 8-pin DIP chip, chip below IC socket for easy replacement and swap chips
    6. Module operating voltage compatible 3.3V/5V, can be connected with 5V and 3.3V microcontroller
    7. Working temperature: 0°--- 70°
    8. 4.3x 2.3cm
Wiring methods (procedures in order to provide an example, you can access any IO port, modify the port definition in the program can be):
    VCC → +5 V/3.3V
    GND → GND
    CLK → P02
    DAT → P01
    RST → P00
1. VCC and GND Do not reversed, it would burn the chip
2. C51 MCU P0 port requires pull-up resistor, if your device does not have a pull-up resistor can be connected to other ports data lines
Quantity1 piece
Form ColorBlue + Silver + Multi-Colored
English Manual / SpecYes
Download Link
Dimensions & Weight
Dimensions 1.97 in x 0.98 in x 0.43 in (5 cm x 2.5 cm x 1.1 cm)
Weight 0.28 oz (8 g)
Packing List
1 x DS1302 Module
1 x CR2032 battery

All packages from are sent without DX logo or any information indicating Due to package variations from suppliers, the product packaging customers receive may be different from the images displayed.

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Rate US$1.59 shipped US$1.58 shipped US$1.57 shipped

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Customer's impression:
good Malfunction First impression is ok.
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Recent Customer Reviews

  • 9184673 Post on 7/5/2017

    Muito bem embalado, não testei ainda mas acredito que esteja tudo OK! Exatos 2 meses pra chegar!


    21 0
  • tilowil Post on 6/13/2017

    Une alternative au DS1307, ce petit module RTC pour une bonne gestion du temps sur arduino.

    Impression:First impression is ok.

    27 0
  • 10337881 Post on 3/30/2017

    Plaquinha bacana, veio bem embalada, tudo ok.

    Impression:First impression is ok.

    0 0
  • ivovni Post on 8/22/2016

    Pros: Cheap, Libraries and Example Code for Arduino can be rather easily found and installed (provided you have the latest Arduino IDE). Cons: Does not work with VCC 5V, but seems to work ok on 3.3V (or no VCC at all, on I... Read more

    Impression:First impression is ok.

    3 0
  • alexvdb Post on 8/17/2016

    After receiving a kit with a faulty RTC module, DX provided me with a replacement. Kuddos to the customer service. However, the replacement was also faulty, in a different way. First RTC: crystal was soldered bad, the on I... Read more


    0 0

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