Install this component

Paste this into Claude Code (VS Code panel, Adom editor, or terminal) to install:

Search the Adom Wiki for the library component "DS3231" (slug: ds3231) at https://wiki-ufypy5dpx93o.adom.cloud/wiki/libraries/ds3231. Pull down the KiCad symbol, footprint, and 3D model files from the wiki page's assets. Install them into my current KiCad project and register in sym-lib-table and fp-lib-table. If the page has a datasheet URL, save that too.
Manufacturer Maxim Integrated
Package SOIC-16
Pins 16 pins (I2C, Alarm, Clock, Battery, Power)
LCSC C9866
Accuracy ±2ppm (±3.5 min/year)
Interface I2C (400kHz)
Battery Backup Yes
Temperature Sensor ±3°C

Library View

Interactive symbol, footprint, and 3D model — hover pins for cross-highlighting.

SymbolGenerated Generated from pin data (KiCad symbol Timer_RTC/DS3231M is multi-unit)
FootprintKiCad KiCad standard library: Package_SO/SOIC-16W_7.5x10.3mm_P1.27mm
3DGenerated Generated pad visualization (Babylon.js)

Breakout Board

Auto-generated breakout molecule for DS3231 — all pins brought to 2mm-pitch headers with 4 corner machine pins on 8mm grid.

Pricing & Availability

Specifications

Accuracy±2ppm (±3.5 min/year)
InterfaceI2C (400kHz)
Battery BackupYes
Temperature Sensor±3°C
Alarms2
PackageSOIC-16

Pin Configuration

I2CAlarmClockBatteryPower
PinNameGroupFunction
I2C — I2C interface
15SDAI2CI2C data
16SCLI2CI2C clock
Alarm — Alarm/interrupt outputs
3INT/SQWAlarmInterrupt / square wave output
4RSTAlarmActive-low reset
Clock — Oscillator
132KHzClock32.768kHz output
2VCCClockSupply voltage (2.3V-5.5V)
Battery — Backup battery
14VBATBatteryBattery input (2.3V-5.5V)
Power — Supply and ground
5NCPowerNo connection
6NCPowerNo connection
7NCPowerNo connection
8NCPowerNo connection
9NCPowerNo connection
10NCPowerNo connection
11NCPowerNo connection
12NCPowerNo connection
13GNDPowerGround

AI Skill Technical Reference

Edit AI Skill

DS3231 — I2C real-time clock, ±2ppm, integrated crystal, SOIC-16

Manufacturer: Maxim Integrated Package: SOIC-16 LCSC: C9866

Description

The DS3231 is a high-precision I2C real-time clock from Maxim with integrated temperature-compensated crystal oscillator (TCXO). Accuracy of ±2ppm (±1 minute per year). Includes 32KHz output and alarm functions.

Electrical Specifications

  • Accuracy: ±2ppm (±3.5 min/year)
  • Interface: I2C (400kHz)
  • Battery Backup: Yes
  • Temperature Sensor: ±3°C
  • Alarms: 2
  • Package: SOIC-16

Pin Configuration

Package: SOIC-16

  • Pin 1: 32KHz — 32.768kHz output
  • Pin 2: VCC — Supply voltage (2.3V-5.5V)
  • Pin 3: INT/SQW — Interrupt / square wave output
  • Pin 4: RST — Active-low reset
  • Pin 5: NC — No connection
  • Pin 6: NC — No connection
  • Pin 7: NC — No connection
  • Pin 8: NC — No connection
  • Pin 9: NC — No connection
  • Pin 10: NC — No connection
  • Pin 11: NC — No connection
  • Pin 12: NC — No connection
  • Pin 13: GND — Ground
  • Pin 14: VBAT — Battery input (2.3V-5.5V)
  • Pin 15: SDA — I2C data
  • Pin 16: SCL — I2C clock

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0 revisions · Updated 2026-03-02 17:31:36