# PiicoDev Real Time Clock (RTC) RV-3028

**Type:** Product page · **SKU:** CE08239 · **Brand:** [PiicoDev](https://core-electronics.com.au/brands/piicodev-brand)
**Page:** https://core-electronics.com.au/piicodev-real-time-clock-rv3028.html ([markdown](https://core-electronics.com.au/piicodev-real-time-clock-rv3028.html.md))

Accurate timekeeping, even during a power outage.

## Pricing

- **Price:** $16.30 (inc GST) — $14.82 AUD, exc GST
- **Quantity discounts:** 4+ $14.07 (exc GST) · 12+ $13.34 (exc GST) · 50+ $12.60 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 30 today, and up to 500 more in 6–42 days.

## Description

The PiicoDev® Real-Time Clock (RTC) accurately tracks the passage of time to within 1ppm - an amazing 30 seconds per year! Based on a low-power and very accurate RV-3028, this RTC tracks year, month, day, hours, minutes, and seconds. Follow the [Getting Started Guide](https://core-electronics.com.au/guides/piicodev-real-time-clock-rtc-rv3028-getting-started-guide) to set the time and create a simple alarm clock - or schedule actions to perform in the distant future. The PiicoDev RTC features a supercapacitor for backup power, capable of running the clock for up to a week without external power. When power is connected, the supercap is recharged. From dead-flat, it takes about three minutes to charge the supercap enough to sustain shorter power outages (a full charge takes about an hour). Additional pins are broken out to provide access to the programmable clock output (CLK) pin, and an Event Input Interrupt (EVI) pin which can capture the timestamp of an external event.

- A great [guide](https://core-electronics.com.au/guides/piicodev-real-time-clock-rtc-rv3028-getting-started-guide/) to get you started with Raspberry Pi, Pico, or Micro:bit
- Backup power provided by a Supercapacitor - no batteries required!
- Tracks year, month, day, weekday, hour, minutes, seconds
- Schedule events or alarms
- Automatically switches between main power and backup power
- High accuracy clock - within 30 seconds per year
- PiicoDev Connector, compatible with Qwiic and STEMMA QT (3.3V Only)
 
**Technical Specifications**

- Supply voltage: 1.1 - 3,3V (Must use 3.3V if used with other PiicoDev devices, Supercapacitor is charge to the input voltage)
- 7-bit I2C Address: 0x52
 
**Resources**

- [Getting Started Guide](https://core-electronics.com.au/guides/piicodev-real-time-clock-rtc-rv3028-getting-started-guide)
- [Hardware Repository](https://github.com/CoreElectronics/CE-PiicoDev-Real-Time-Clock-RV3028)
- [Schematic](https://github.com/CoreElectronics/CE-PiicoDev-Real-Time-Clock-RV3028/raw/main/Documents/schematic.pdf)
- [Mounting Guide (Mechanical Drawings)](https://core-electronics.com.au/guides/piicodev-mounting-guide/)
- [Python / MicroPython repository](https://github.com/CoreElectronics/CE-PiicoDev-RV3028-MicroPython-Module) with code examples
- RV-3028 [Datasheet](https://github.com/CoreElectronics/CE-PiicoDev-Real-Time-Clock-RV3028/raw/main/Documents/RV-3028-C7.pdf) & [Application Guide](https://github.com/CoreElectronics/CE-PiicoDev-Real-Time-Clock-RV3028/raw/main/Documents/RV-3028-C7_App-Manual.pdf)
 
Also available are [PiicoDev Starter Kits](https://core-electronics.com.au/piicodev.html#category_1322) - level up your projects by learning how to use a wide range of modern sensors and output.

![](https://core-electronics.com.au/media/wysiwyg/PiicoDev_Real_Time_Clock_RV3028_1_.jpg)![](https://core-electronics.com.au/media/wysiwyg/PiicoDev_Real_Time_Clock_RV3028_1_.jpg)**PiicoDev Overview**

[PiicoDev](https://core-electronics.com.au/piicodev.html) is a [![](https://core-electronics.com.au/skin/frontend/white/default/images/ce_original_blue.png)](https://core-electronics.com.au/original) ecosystem designed for rapid prototyping and maker education. The range includes:

- [Starter Kits](https://core-electronics.com.au/piicodev.html#category_1322)
- [Sensors](https://core-electronics.com.au/piicodev.html#category_1380)
- [Outputs](https://core-electronics.com.au/piicodev.html#category_1381)
- [Adaptors & Expansion Boards](https://core-electronics.com.au/piicodev.html#category_1307)
- [Platforms](https://core-electronics.com.au/piicodev.html#category_1310)
- [Cables](https://core-electronics.com.au/piicodev.html#category_1309)
- [Accessories](https://core-electronics.com.au/piicodev.html#category_1323)
 
Here are some of the features we have baked into PiicoDev:

- **Unified MicroPython libraries.** The same MicroPython code examples will work on all supported platforms.
- **Simple-and-expandable connections.** Modules can be connected using a 4-pin connector and daisy-chained to expand projects.
- **Breakout pins.** Every module has a breakout section for optional advanced uses.
- **Consistent size.** We have taken care to ensure modules are consistent sizes so that they easy for 3D printing cases, stacking and experimenting with.
- **Creative freedom.** Simmer all of these features together and you end up with lots of creative freedom while still being a hands-on electronics experience.
 
PiicoDev modules are designed by our team in Newcastle and manufactured in Australia and overseas. They’re made for makers and educators alike — affordable, reliable, and easy to use. [Get in touch](https://core-electronics.com.au/contacts/) if you have any questions.

"PiicoDev" and the PiicoDev Logo are trademarks of Core Electronics Pty Ltd.

## Guides for this product

- [PiicoDev Real Time Clock (RTC) RV-3028 - Getting Started Guide](https://core-electronics.com.au/guides/piicodev/piicodev-real-time-clock-rtc-rv3028-getting-started-guide/)

## Videos for this product

- [PiicoDev Real Time Clock (RTC) RV3028 \| Guide for Micro:Bit](https://core-electronics.com.au/videos/piicodev-real-time-clock-rtc-rv3028-guide-for-microbit)
- [PiicoDev Real Time Clock (RTC) RV-3028 \| Guide for Raspberry Pi Pico](https://core-electronics.com.au/videos/piicodev-real-time-clock-rtc-rv-3028-guide-for-raspberry-pi-pico)
- [PiicoDev Real Time Clock (RTC) RV-3028 \| Guide for Raspberry Pi](https://core-electronics.com.au/videos/piicodev-real-time-clock-rtc-rv-3028-guide-for-raspberry-pi)
- [The Factory \| Supercapacitor Powered RTC & A Soldering Jig](https://core-electronics.com.au/videos/the-factory-supercapacitor-powered-rtc-a-soldering-jig)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/p/i/piicodev-real-time-clock-rv3028_1.jpg)