DS3231M
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DS3231M

±5ppm, I2C Real-Time Clock

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Industry's First Temperature-Compensated RTC with Internal MEMS Resonator Reduces Crystal Mechanical Failure Susceptibility

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 6
1ku List Price Starting From $4.63
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 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
Additional Details
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The DS3231M is a low-cost, extremely accurate, I2C real-time clock (RTC). The device incorporates a battery input and maintains accurate timekeeping when main power to the device is interrupted. The integration of the microelectromechanical systems (MEMS) resonator enhances the long-term accuracy of the device and reduces the piece-part count in a manufacturing line. The DS3231M is available in the same footprint as the popular DS3231 RTC.

The RTC maintains seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an active-low AM/PM indicator. Two programmable time-of-day alarms and a 1Hz output are provided. Address and data are transferred serially through an I2C bidirectional bus. A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, to provide a reset output, and to automatically switch to the backup supply when necessary. Additionally, the active-low RST pin is monitored as a pushbutton input for generating a microprocessor reset. See the Block Diagram in the full data sheet for more details.

Applications

  • Industrial Applications
  • Power Meters
Part Models 6
1ku List Price Starting From $4.63

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
DS3231M+
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DS3231M+TRL
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DS3231MZ+
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DS3231MZ+TRL
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DS3231MZ/V+
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DS3231MZ/V+T
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 3

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DS3231MZEVKIT

Evaluation Kits for the DS3231M or DS3232M

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DS3231MZEVKIT

Evaluation Kits for the DS3231M or DS3232M

Evaluation Kits for the DS3231M or DS3232M

Features and Benefits

  • Aid to Fast Hardware and Software Debugging
  • GUI-Based Application for Ease of Use
  • Allows for User-Configurable Single- or Dual-Supply Operation
  • Optional Footprint Accepts 8-Pin or 16-Pin SO

Product Detail

The DS3231MZ/DS3232M (DS323X) evaluation kit (EV kit) is a fully assembled and tested circuit board with an accompanying application program that demonstrates the operation of the DS3231M or DS3232M temperature-compensated real-time clocks. The DS3231M and DS3232M I2C real-time clocks contain an internal silicon (MEMS) resonator for its timekeeping reference. Both components constantly monitor the operating temperature, periodically adjusting the internal oscillator frequency to maintain highly accurate time information.
The EV kit includes one TCXO component soldered onto the demonstration board, a USB I/O communications module for evaluation kits (DS3900H2), and a CD containing the application program and instructions. System requirements are a Windows®-compatible PC running Windows XP®, Windows Vista®, or later, and a USB port. The EV kit allows for optional user configuration to a single power-supply operation, and the accompanying I2C interface and application program provides easy access to manipulate register settings, while observing the various component functions of timekeeping and real-time alarm-initiated interrupts.
The EV kit also allows the user to connect their I2C master to the sample component for operational verification and/or code generation.

Applications

  • Building Automation
  • High-Definition Video Security
  • Industrial Application
  • Power Meters
reference details image

DS3232MEVKIT

Evaluation Kits for the DS3231M or DS3232M

zoom

DS3232MEVKIT

Evaluation Kits for the DS3231M or DS3232M

Evaluation Kits for the DS3231M or DS3232M

Features and Benefits

  • Aid to Fast Hardware and Software Debugging
  • GUI-Based Application for Ease of Use
  • Allows for User-Configurable Single- or Dual-Supply Operation
  • Optional Footprint Accepts 8-Pin or 16-Pin SO

Product Detail

The DS3231MZ/DS3232M (DS323X) evaluation kit (EV kit) is a fully assembled and tested circuit board with an accompanying application program that demonstrates the operation of the DS3231M or DS3232M temperature-compensated real-time clocks. The DS3231M and DS3232M I2C real-time clocks contain an internal silicon (MEMS) resonator for its timekeeping reference. Both components constantly monitor the operating temperature, periodically adjusting the internal oscillator frequency to maintain highly accurate time information.
The EV kit includes one TCXO component soldered onto the demonstration board, a USB I/O communications module for evaluation kits (DS3900H2), and a CD containing the application program and instructions. System requirements are a Windows®-compatible PC running Windows XP®, Windows Vista®, or later, and a USB port. The EV kit allows for optional user configuration to a single power-supply operation, and the accompanying I2C interface and application program provides easy access to manipulate register settings, while observing the various component functions of timekeeping and real-time alarm-initiated interrupts.
The EV kit also allows the user to connect their I2C master to the sample component for operational verification and/or code generation.

Applications

  • Building Automation
  • High-Definition Video Security
  • Industrial Application
  • Power Meters
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DS3231MPMB1

DS3231MPMB1 Peripheral Module

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DS3231MPMB1

DS3231MPMB1 Peripheral Module

DS3231MPMB1 Peripheral Module

Features and Benefits

  • High Accuracy Time-of-Day and Date (±5ppm) from -40°C to +85°C
  • 32.768kHz Square-Wave Output
  • Digital Temp Sensor with ±3°C Accuracy
  • 6-Pin Pmod-Compatible Connector (I²C)
  • Example Software Written in C for Portability
  • Secondary Header Allows Daisy-Chaining of Additional Modules on the I²C Bus
  • RoHS Compliant
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Detail

The DS3231MPMB1 peripheral module provides the necessary hardware to interface the DS3231M real-time clock (RTC) to any system that utilizes Pmod™-compatible expansion ports configurable for I²C communication. The IC is a low-cost and extremely accurate I²C RTC. The device incorporates a battery input and maintains accurate timekeeping when main power to the device is interrupted. The integration of the micro-electromechanical systems (MEMS) resonator enhances the long-term accuracy of the device and reduces the piece-part count in a manufacturing line. The device is available in the same footprint as the popular DS3231 RTC.

Refer to the DS3231M IC data sheet for detailed information regarding operation of the IC.

Applications

  • Industrial Applications
  • Portable Instruments
  • Power Meters
Reference Designs

Reference Designs 1

5878fig01

Pmod Adapter for Arduino Platform

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MAXREFDES72

Pmod Adapter for Arduino Platform

Pmod Adapter for Arduino Platform

Features and Benefits

Features

  • Arduino® UNO R3 compatible
  • IOREF support for 3.3V or 5V signal levels
  • 2x6 Digilent® Pmod compatible interface
  • Supports Pmod types 1, 2, 3, and 4, I2C and nonstandard pinouts
  • Level shifting between Pmod and Arduino pins
  • Precision RTC with integrated MEMS resonator

Applications

  • Prototyping
  • Science fair projects
  • Maker and hobbyist projects
  • Science and electronics education
  • Analog peripheral testing and integration
View Detailed Reference Design external link

Design & Integration Tools

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