Logical pinout · physical placement not verified

VCC
Type · Power
GND
Type · Ground
SDA
Type · I2C
SCL
Type · I2C

Pin	Type
VCC	Power
GND	Ground
SDA	I2C
SCL	I2C

Logical pinout · physical placement not verified

Pin details

4 connections

VCC
Power
GND
Ground
SDA
I2C
SCL
I2C

RTC & timing

26 other options

DS3231/DS3232 temperature-compensated RTCs, the budget PCF8523 and DS1307, the Si5351A clock generator (8kHz–160MHz), and bare 16MHz crystals — matched to drift tolerance and supply voltage.

View all 26

16 MHz Quartz Crystal visual preview
16 MHz Quartz Crystal
Adafruit DS3231 Precision RTC Breakout visual preview
Adafruit DS3231 Precision RTC Breakout
Adafruit PCF8523 Real Time Clock Assembled Breakout Board visual preview
Adafruit PCF8523 Real Time Clock Assembled Breakout Board
Adafruit PCF8523 Real Time Clock Breakout Board visual preview
Adafruit PCF8523 Real Time Clock Breakout Board
$4.95
Adafruit PiRTC - PCF8523 Real Time Clock for Raspberry Pi visual preview
Adafruit PiRTC - PCF8523 Real Time Clock for Raspberry Pi
Adafruit PiRTC - Precise DS3231 Real Time Clock for Raspberry Pi visual preview
Adafruit PiRTC - Precise DS3231 Real Time Clock for Raspberry Pi
Adafruit S-35710 Low-Power Wake Up Timer Breakout visual preview
Adafruit S-35710 Low-Power Wake Up Timer Breakout
$4.95
Adafruit Si5351A Clock Generator with STEMMA QT visual preview
Adafruit Si5351A Clock Generator with STEMMA QT
$7.95
ChronoDot - Ultra-precise Real Time Clock visual preview
ChronoDot - Ultra-precise Real Time Clock
DS1307 RTC Module with Battery for Raspberry Pi visual preview
DS1307 RTC Module with Battery for Raspberry Pi
DS3231 Precision RTC FeatherWing - RTC Add-on For Feather Boards visual preview
DS3231 Precision RTC FeatherWing - RTC Add-on For Feather Boards
Fermion: DS3231 Precise RTC (Breakout) visual preview
Fermion: DS3231 Precise RTC (Breakout)

Related groups

4 groups

LED pixels

WS2812/SK6812 NeoPixel strips, rings and Jewels, APA102 DotStar pixels, and plain analog RGB strips — each matched to its protocol and host, not just its connector.

Components · Addressable LEDs · 180 parts

Bare ICs

74HC logic gates, MCP3008/MCP23017 ADCs and expanders, 24LC256 EEPROM, 4N25-series optocouplers and ULN2803A drivers — bare DIP chips with no breakout-board conveniences like pull-ups or level shifting.

Components · Integrated circuits · 68 parts

Converters

ADS1115/MCP3421 ADCs, MCP4725 and GP8413 DACs, CP2102 USB-UART boards, and I2C plumbing like the LTC4316 address shifter — matched to bus, resolution and signal range.

Components · Interface converters · 114 parts

Memory

24LC32/25LC256 EEPROM, I2C FRAM, 64Mbit PSRAM, and microSD breakouts up to 64GB — matched to write frequency and data volume, not just interface.

Components · Memory & storage · 39 parts