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Adafruit PCF8523 Real Time Clock Breakout Board

ADA5189 · AdafruitActive

Adafruit PCF8523 Real Time Clock Breakout Board photo
Adafruit PCF8523 Real Time Clock Breakout Board illustration

Adafruit product #5189 — built on PCF8523.

Part numberADA5189
ManufacturerAdafruit
CategoryInterface & Expansion › RTC & Timing
Pins5

Adafruit PCF8523 Real Time Clock Breakout Board pinout

PinNameTypeDescription
1VCCpower
2GNDground
3SCLbidirectional
4SDAbidirectional
5SQWbidirectional

Schematic symbol and footprint

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Footprint: Adafruit PCF8523 STEMMA QT (header pads) — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.

Datasheet

Where to buy

SupplierStockPriceStatus
Mouser97$4.95 (1+)View
DigiKey269$4.95 (1+)ActiveView

Stock and prices from the suppliers, checked 2026-10-08; excluding tax and shipping.

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