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Gravity: I2C SD2405 RTC Module

SKU:DFR0469 Brand:DFRobot Reward Points: 9
$8.60 In Stock
Price in Reward Points:860
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Introduction

We're glad to introduce a new member in Gravity family: Gravity I2C SD2405 RTC module. This is an extremely accurate I2C real-time clock (RTC) with crystal compensation, inner chargeable battery. The SD2405AL is available in industrial temperature ranges.

The SD2405AL is dual power supply system. When the primary power supply goes down to an assigned value or resumes from low power, the system can switch between the primary power supply and battery automatically. Even there is no external power, it can still work for 5~8 years, 1uA ultra-low power consumption (inner battery, Ta=25°C).

The SD2405AL can generates various periodic interrupt clock pulses lasting for long period (one year), and three alarm interrupts can be made by year, month, date, days of the week, hours, and minutes, seconds. It also provides a selectable 32.768KHz~1Hz clock output for an external MCU. The product incorporates a time trimming circuit that adjusts the clock with higher precision by adjusting any errors in crystal oscillator frequencies based on signals from the CPU. A 12-bytes general SRAM is implemented in the SD2405AL.

Gravity SD2405 RTC can work as data logger, timer alarm clock and other time application. It is an ideal choice for timing project.
Note: Two versions with or without Weld pins will be shipped randomly.

Specification

  • Operation voltage range:3.3V~5.5V.
  • Low-power:typical 1uA (inner battery, Ta=25°C)
  • Timing Range: To 2099 (with leap year compensation)
  • Accuracy ±5ppm from -40°C to +85°C.
  • Fast (400kHz) I2C Interface(4.5~5.5V).
  • Real-Time Clock Counts Seconds, Minutes,Hours, Day, Date, Month, and Year with Leap Year Compensation Valid Up to 2100.
  • Time-of-Year,Month,Day,Week,Hour,Minute,Second Alarms.
  • Programmable Square-Wave Output:32768hz,4096hz...1hz..1/16hz.
  • Countdown timer interrupt.
  • High precision time trimming circuit.
  • 12-hour/24-hour time display selectable
  • Dimension: 35.50 * 22.00(mm)/1.4 * 0.87 inches
  • Weight: 6g
  • Documents

    Shipping List

  • Gravity: I2C SD2405 RTC Module x1
  • Gravity I2C 4-Pin Sensor Cable x1
  • XH2.54-5pin header x1
  • Projects

    Project 1. Build KnowFlow: automatic water monitor

    KnowFlow is the name of this water quality monitoring device, based on Arduino Uno. It can automatically monitor 5 parameters of water: pH, Temperature, Dissolved Oxygen, Electronic Conductivity, ORP.

    Project 2: DIY Deer Clock
    Project introduction: We are going to make a table clock showing time in a lovely way. This product has quite cute look and the LED screen make it cool.

    The hardwares you need to do this project:

    Gravity: I2C SD2405 RTC Module
    Beetle - The Smallest Arduino
    FireBeetle Covers-24×8 LED Matrix (White)
    Micro USB cable

    REVIEW

    Gravity: I2C SD2405 RTC Module

    $8.60
    In Stock
    QTY DISCOUNT
    • 2-4$8.30
    • 5-9$8.00
    • 10+$7.50
    Quantity:

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