How to use DS3231 RTC module , connect it to I2C bus and build cool looking OLED clock
Real Time Clock Serial 16-Pin SOIC W
The DS3231M is a low-cost, extremely accurate, I2C real-time clock (RTC).
DS3231M RTC: Pinout, Application, Circuit
Real Time Clock Serial 16-Pin SOIC W The DS3231M is a low-cost, extremely accurate, I2C real-time clock (RTC).
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Aug 13, 2021
Miles Gunter
DS3231M
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DS3231M Pinout
DS3231M CAD Model
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DS3231M Description
The DS3231M is a low-cost, extremely accurate, I2C real-time clock (RTC). The device incorporates a battery input and maintains accurate timekeeping when the main power to the device is interrupted. It is available in the same footprint as the popular DS3231 RTC.
DS3231M Features
●Highly Accurate RTC With Integrated MEMS Resonator Completely Manages All Timekeeping Functions
• Complete Clock Calendar Functionality Including Seconds, Minutes, Hours, Day, Date, Month, and Year, with Leap-Year Compensation Up to the Year 2100
• Timekeeping Accuracy ±5ppm (±0.432 Second/Day) from -45°C to +85°C
• Footprint and Functionally Compatible to DS3231
• Two Time-of-Day Alarms
• 1Hz and 32.768kHz Outputs
• Reset Output and Pushbutton Input with Debounce
• Digital Temp Sensor with ±3°C Accuracy
• +2.3V to +5.5V Supply Voltage
● Simple Serial Interface Connects to Most Microcontrollers
• Fast (400kHz) I2C Interface
● Battery-Backup Input for Continuous Timekeeping
• Low Power Operation Extends Battery-Backup Run Time
● Operating Temperature Range: -40°C to +85°C
● 8-Pin or 16-Pin SO Packages
● Underwriters Laboratories® (UL) Recognized
DS3231M Block Diagram
The DS3231M is a serial real-time clock (RTC) driven by an internal, temperature-compensated, micro-electromechanical systems (MEMS) resonator. The Block Diagram shows the device's main elements given below.
Specifications
Maxim Integrated DS3231M+ technical specifications, attributes, parameters and parts with similar specifications to Maxim Integrated DS3231M+.
DS3231M Tech Specifications
DS3231M Tech Specifications
Maxim Integrated DS3231M technical specifications, attributes, parameters and parts with similar specifications to Maxim Integrated DS3231M .
| Product Attribute | Attribute Value | |
|---|---|---|
| Factory Lead Time | 6 Weeks | |
| Mount | Surface Mount | |
| Mounting Type | Surface Mount | |
| Package / Case | 16-SOIC (0.295, 7.50mm Width) | |
| Number of Pins | 16Pins | |
| Operating Temperature | -40°C~85°C | |
| Packaging | Tube | |
| Published | 2010 | |
| Pbfree Code | yes | |
| Part Status | Active | |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | |
| Number of Terminations | 16Terminations | |
| ECCN Code | EAR99 | |
| Type | Clock/Calendar |
| Product Attribute | Attribute Value | |
|---|---|---|
| HTS Code | 8542.39.00.01 | |
| Voltage - Supply | 2.3V~5.5V | |
| Terminal Position | DUAL | |
| Supply Voltage | 3.3V | |
| Terminal Pitch | 1.27mm | |
| Base Part Number | DS3231 | |
| Pin Count | 16 | |
| Operating Supply Voltage | 3.3V | |
| Interface | I2C, 2-Wire Serial | |
| Clock Frequency | 0.4MHz | |
| Logic Function | Clock | |
| Number of Timers | 1Timer | |
| Time Format | HH:MM:SS (12/24 hr) | |
| Date Format | YY-MM-DD-dd |
| Product Attribute | Attribute Value | |
|---|---|---|
| Current - Timekeeping (Max) | 130μA~200μA @ 3.63V~5.5V | |
| Time-Min | SECONDS | |
| Interrupt Capability | Y | |
| Voltage - Supply, Battery | 2.3V~5.5V | |
| Volatile | NO | |
| Information Access Method | I2C | |
| Features | Alarm, Leap Year, Square Wave Output | |
| Length | 10.3mm | |
| Height Seated (Max) | 2.65mm | |
| Width | 7.5mm | |
| Radiation Hardening | No | |
| RoHS Status | ROHS3 Compliant |
DS3231M Application
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Power Meters
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Industrial Applications
DS3231M Typical Operating Circuit
Datasheet PDF
Download datasheets and manufacturer documentation for Maxim Integrated DS3231M+.
DS3231M Documents
DS3231M Documents
Download datasheets and manufacturer documentation for DS3231M
Environmental Information
Material Declaration DS3231M
Application Notes
Driving Microelectromechanical Systems (MEMS) with Precision Control
Stuxnet and Other Things that Go Bump in the Night
MEMS Technology Provides Tangible Benefits for Real-Time Clocks
Industry Turns to MEMS for Accurate Real-Time Clocks
Other Related Documents
Tips for Writing Bulletproof Real-Time Clock Control Code
ConflictMineralStatement
Maxim-Integrated-company-65.pdf
Frequently Asked Questions
What package is DS3231M available in?
It is available in 8-pin or 16-pin SO packages.
Does DS3231M have a temperature sensor?
The DS3231M RTC has a built-in alarm function as well as a temperature sensor with a resolution of 0.25 and an accuracy of ±3°C which makes this project easier.
How do I set the date and time in RTC DS3231?
Simple Guide to Setting Time on a DS3231/DS3107/DS1337 Real Time Clock With Arduino UNO
Step 1: Parts. You'll need only
Step 2: Connect RTC to Arduino. Place the coin-cell battery in the RTC.
Step 3: Download the Arduino Library and Run the SetTime Sketch.
3 People Made This Project! ...
9 Comments.
FAQ
What package is DS3231M available in?
It is available in 8-pin or 16-pin SO packages.
Does DS3231M have a temperature sensor?
The DS3231M RTC has a built-in alarm function as well as a temperature sensor with a resolution of 0.25 and an accuracy of ±3°C which makes this project easier.
How do I set the date and time in RTC DS3231?
Simple Guide to Setting Time on a DS3231/DS3107/DS1337 Real Time Clock With Arduino UNO
Step 1: Parts. You'll need only
Step 2: Connect RTC to Arduino. Place the coin-cell battery in the RTC.
Step 3: Download the Arduino Library and Run the SetTime Sketch.
3 People Made This Project! ...
9 Comments.
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