RV3028 RTC 모듈
(RV3028 Real-Time Clock (RTC) Breakout)
개요
- 본 제품은 초저전력 정교 RV3028 RTC 모듈입니다.
- ~100nA 이하의 전력소모를 가지고 있는 제품으로 장치의 전원이 꺼져도 시간을 트래킹 하고자 할경우 사용하는 제품입니다.
- RV3028은 공장에서 보정되어 ±1 second per million seconds at 25 degrees 의 드리프트를 가집니다. 대략 일반적인 디지털 시계보다 5배가량 높은 정확도를 보입니다.
- 사용되는 8mAh 배터리는 RTC 모듈의 시간을 대략 5-7년 가량 유지시켜 줄 수 있습니다.
- I2C 인터페이스를 가지고 있으며, 3.3V 및 5V로 동작합니다.
특징
- RV3028 Real-Time Clock (RTC)
- Ultra-low-power (~100nA typical current draw)
- ±1 second drift per million seconds at 25 degrees
- Silver oxide battery included (1.55V, 8mAh, 337 type)
- 3.3V or 5V compatible
- I2C interface (address 0x52)
- Reverse polarity protection
- Raspberry Pi-compatible pinout (pins 1, 3, 5, 7, 9)
- Compatible with Raspberry Pi 3B+, 3, 2, B+, A+, Zero, and Zero W
- Compatible with Arduino
- Python library
- Datasheet and applications manual
- It's also compatible with our fancy Breakout Garden, where using breakouts is as easy as just popping it into one of the six slots and starting to grow your project, create, and code.
Kit includes
- RV3028 RTC Breakout
- 1x5 male header
- 1x5 female right angle header
문서
-
Software
We've put together a Python library that you can use with your RV3028 RTC Breakout, and an easy one-line installer to install everything.
Our Python library allows you to set and get the time (year, month, day, hour, minute, second), set periodic countdown timers with interrupts, and to set one-off or recurring alarms with interrupts.
Our software does not support Raspbian Wheezy.
Notes
- You'll need to run the set-time.py example the first time that you use your RV3028 RTC breakout to set the time correctly and to enable the clock to run on battery backup!
- The battery in this breakout is extremely tiny, so take care not to lose it. Also take care not to contact any metal objects with the breakout to avoid shorting the battery (don't toss it in a box with other breakouts or conductive materials)
- Dimensions: 19x19x4mm