DS3231M+ RTC Module: A Timer pinout & PDF

Check out this video to see How to use DS3231 RTC module

 16 Terminations 3.3V 16 Pin DS3231 Real Time Clocks Timer or RTC Subcategory Alarm, Leap Year, Square Wave Output 0.4MHz

The DS3231M is a low-cost, high-precision I2C real-time clock (RTC).

Catalog

DS3231M+ Description

DS3231M+ Pinout

DS3231M+ CAD Model

DS3231M+ Features

DS3231M+ Applications

DS3231M+ Alternatives

DS3231M+ Typical Application Circuit

DS3231M+ Functional Block Diagram

DS3231M+ Package

Datasheet PDF

Specifications

Product Comparison

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 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 AM/PM indicator. Two programmable time-of-day alarms and a 1Hz output are provided. Address and data are transferred serially through an 12C 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 RST pin is monitored as a push button input for generating a microprocessor reset. See the Block Diagram for more details.

DS3231M+ Pinout

DS3231M+ CAD Model

Symbol

Footprint

3D-model

DS3231M+ Advantages

This is a highly accurate RTC with an integrated MEMS resonator that manages all timekeeping functions. It has complete clock calendar functionality, including seconds, minutes, hours, day, date, month, and year. It also has leap-year compensation up to the year 2100. The timekeeping accuracy is 5ppm (+0.432 seconds/day) from -45°C to +85°C. It is footprint and functionally compatible to DS3231. It has two time-of-day alarms, 1Hz and 32.768kHz outputs, a reset output, and a pushbutton input with debounce. It also includes a digital temperature sensor with +3°C accuracy. The supply voltage is +2.3V to +5.5V, and it has a simple serial interface that connects to most microcontrollers. The I2C interface is fast at 400kHz. It has a battery-backup input for continuous timekeeping, low power operation, and an operating temperature range of -40°C to +85°C.

DS3231M+ Applications

As you can see, these are the DS3231M+ Real Time Clocks applications:

Automotive

Industrial Applications

Digital still camera

Digital video camera

Printers

Copy machines

Mobile equipment

Battery powered devices

Printers and copiers

Electronic metering

Power Meters

DS3231M+Alternatives

DS3231SN: This is another model of the DS3231 series with similar features and performance as the DS3231M, but may have some minor differences.

PCF8563: This is another real-time clock chip from NXP with similar features and performance and can be used as a replacement for the DS3231M.

MCP7940N: This is a real time clock chip from Microchip with high accuracy and low power consumption and can be used as a replacement for the DS3231M.

RV-3028-C7: This is a real-time clock module from Micro Crystal with very low power consumption and high accuracy, suitable for battery-powered application scenarios.

DS3231M+Typical Application Circuit

DS3231M+Functional Block Diagram

DS3231M+ Package

Datasheet PDF

Please DOWNLOAD the datasheets and manufacturer documentation for the DS3231M+.

Specifications

Product Comparison

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