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Fermion: SD3031 Precision RTC Module for Arduino (Breakout)

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Fermion: SD3031 Precision RTC Module for Arduino (Breakout)

SKU: DFR0998 Brand: DFRobot

The real-time clock RTC breakout module employs the SD3031 chip with an integrated crystal oscillator and temperature compensator and a built-in 70-byte...

$8.70 AUD, inc GST

$7.91 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Delivered by Mon, 6th of May

Quantity Discounts:

10-25 $7.67 (exc GST)
25+ $7.51 (exc GST)

Restrictions apply to this equipment as it uses button/coin cell batteries:

The equipment is intended to be used in trades, professions or industries
The equipment is not intended for sale to the general public
The equipment is not intended to be used where children are present
You are aware that this equipment may not meet child safety testing requirements as it is not intended to be used by consumers or general public, but rather, is intended to be used in trades, professions or industries in conjunction with the limitations and restrictions listed above
You are aware that these restrictions are due to a change in A ustralian legislation in 2022 for button/coin cell batteries

Button Battery Warning

A declaration of use will need to be submitted during checkout.

This real-time clock (RTC) module uses the SD3031 chip, which has an integrated crystal oscillator and temperature compensator. This provides high-precision timing and stability. At a temperature of 25 °C, the accuracy is maintained at ±3.8ppm (±0.32832 seconds/day).

The SD3031 can be powered by button-cell batteries. This allows for accurate timing even when the main power source is interrupted. The RTC keeps track of seconds, minutes, hours, days of the week, dates of the month, and months and years. It also automatically adjusts the date at the end of each month and includes leap year corrections. The SD3031 has a built-in 70-byte SRAM for low-power data storage.

Please note that due to recent air cargo regulations, special items such as batteries, magnets, and liquids are strictly audited for air transport. As a result, the RTC module does not come with batteries. You will need to purchase them locally. The button cell model that is compatible with this module is the CR1220.

Wiring diagram of Fermion: SD3031 Precision RTC Module and Arduino Uno

RTC Module Selection Guide

Product Name	Fermion: DS3231M MEMS Precise RTC Module	Fermion: DS3231 Precise RTC Module	Fermion: DS3232 Precision RTC Module	Fermion: SD3031 RTC Module
SKU	DFR0641	DFR0819	DFR0821	DFR0998
Storage	None	None	236Byte	70Byte
Integrated Resonator	MEMS	XTAL	XTAL	XTAL
Timing Current	2000nA	840nA	1500nA	1800nA
Timing Precision	±5ppm (±0.432s/d)	±3.5ppm (±0.3024s/d)	±3.5ppm (±0.3024s/d)	±3.8ppm (0.32832s/d) @ 25°C
Operating Voltage	3.3V-5.5V	3.3V-5.5V	3.3V-5.5V	3.3V
Operating Temperature	-45°C to 85°C	-40°C to 85°C	-40°C to 85°C	-10°C to 70°C
	A real-time clock (RTC) module with integrated MEMS resonator, reducing the risk of mechanical failure, suitable for scenarios with strong and frequent vibration.	A real-time clock (RTC) module with integrated crystal oscillator, featuring higher precision and lower power consumption, suitable for scenarios requiring high precision and low power.	A real-time clock (RTC) module with integrated crystal oscillator, featuring built-in 236Byte SRAM storage, capable of storing data with ultra-low power consumption, suitable for low-power loT applications requiring real-time clock.	A cost-effective RTC module with integrated crystal oscillator, featuring built-in 70Byte SRAM storage, capable of storing data with ultra-low power consumption, suitable for low-power loT applications requiring real-time clock.

Features

Low power consumption, operating current of only 1.8µA when powered by button cell battery

High precision, ±3.8ppm@25°C

Integrated temperature compensator, small temperature drift

Readable button cell voltage

Built-in 70Byte SRAM

Applications

Event Reminder

Countdown Devices

MCU External Wake-up Source

Clock & Alarm Output

IoT Data Collection & Storage

Specification

Supply Voltage: 3.3V

I2C Address: 0x32

SRAM: 70 Byte (0x2C-0x71)

Timing Year Range: 2000 - 2099

Operating Temperature: -10°C to +70°C

Timing Accuracy: ±3.8ppm @ 25°C

Dimension: 22.5x21mm/0.89x0.83"

Documents

Product wiki

Schematics

Parts List

Fermion: SD3031 RTC module (Breakout) × 1

2.54-7P Black Single-row Pin Connector × 1

This product is listed in:

Breakouts & Modules>Date Time (RTC)

Product Comments

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Exact shipping can be calculated on the view cart page (no login required).

Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

$3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
$6+ for Standard Post (typically 6+ business days, tracked)
$10+ for Express Post (typically 2+ business days, tracked)
Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

International Orders - the following rates are for New Zealand and will vary for other countries:

$11+ for Pack and Track (3+ days, tracked)
$16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

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