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Fermion: DS3232 Precise RTC (Breakout)

$12.00
SKU: DFR0821
Volume Discount
  • $11.60 3+ items
  • $11.40 5+ items
  • $11.00 10+ items
This RTC module features DS3232 chip with crystal resonator and temperature compensator for high accuracy. It includes 236-byte SRAM and offers alarm functions.
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Introduction

This real-time clock module (RTC) uses the DS3232 chip that integrates a crystal resonator and a temperature compensator, which improves the long-term accuracy of the module. In the range of -40°C to +85°C, the accuracy of DS3231 remains at ±3.5ppm (±0.3024 seconds/day).

The DS3232 integrates 236Byte SRAM storage that can store data with extremely low power consumption, and it also can be used in scenarios such as low power consumption collection of the Internet of Things.

The device incorporates a battery input and maintains high precision timing when the main power to the device is interrupted. The RTC provides information of seconds, minutes, hours, week, day, month, and year, and it can automatically adjust the date at the end of the month, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. Two programmable time-of-day alarms and a programmable square-wave output are provided. In addition, the RST pin can be used as a push-button input for microprocessor reset.

Note: Due to the latest air cargo regulations, the transport audit of special items such as batteries, magnets, and liquids will become very strict, so the RTC module does not come with batteries anymore, please purchase them locally. The button cell model that goes with the module is CR1220.

Fermion: DS3232 Precise RTC (Breakout)

Connection Diagram

Fermion: DS3232 Precise RTC (Breakout)

Board Overview

Selection Guide

RTC Module Selection Guide

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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℃
Operating Voltage
3.3V-5.5V
3.3V-5.5V
3.3V-5.5V
3.3V
Operating Temperature
-45℃ to 85℃
-40℃ to 85℃
-40℃ to 85℃
-10℃ to 70℃
Introduction
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.
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Features

  • Internal integrated crystal resonator, small deviation
  • Internal integrated temperature compensator, small temperature drift
  • Complete clock calendar function
  • Two programmable Time-of-Day alarms
  • 236Byte SRAM integrated internally
  • Applications

  • Event reminder
  • MCU external wakeup source
  • Clock and alarm output
  • IoT data collection and storage
  • Specification

  • Power Supply Voltage: 3.3V-5.5V
  • I2C Address: 0x68
  • SRAM:236 Byte (0x14~0x1F)
  • Timing Range: 1970 ~ 2100
  • Working Temperature: -40℃ ~ +85℃
  • Timing Accuracy: ±3.5ppm (±0.3024 sec/day)
  • Product Size: 22.5*21mm / 0.89*0.83 inch
  • Documents

    Shipping List

  • Fermion: DS3232 Precise RTC (Breakout) x1
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  • Fermion: DS3232 Precise RTC (Breakout)
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