---
lang: "en"
title: "PI RTC (DS1307)"
sku: "PI RTC"
canonical_url: "https://shop.marcomweb.it/en/iot-makers/pi-rtc-ds1307"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

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PI RTC (DS1307): Real Time Clock for RASPBERRY

The Pi RTC is based on the DS1307 clock chip and can provide a Real Time Clock (RTC) for Raspberry Pi via the I2C interface. The real-time clock of this module counts seconds, minutes, hours, day of the month, month, day of the week, and year with leap-year compensation valid up to 2100. The clock operates in 24-hour or 12-hour format with AM/PM indicator. If you wish to maintain this module's timing when the Raspberry Pi is powered off, you must insert a 3-Volt CR1225 lithium cell into the battery holder.

Note: Battery is not included.

## Features

Supports Raspberry Pi 2/3/4 B/B+ Zero
Supports seconds, minutes, hours, day of the week, month, year
Supports 24-hour or 12-hour format with AM/PM indicator
56-byte battery-backed, non-volatile (NV) RAM for data storage
Two-wire serial interface
Programmable square-wave output signal
Automatic power-fail detection and switchover circuitry

 

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Source: https://shop.marcomweb.it/en/iot-makers/pi-rtc-ds1307

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