PCF8563 real-time clock module con ESP32

Alimentazione 3.3-5 V Bus I2C Indirizzo I2C 0x51 Misura ora

Pin e collegamento all’ESP32

Pin	Ruolo	Pin ESP32	Note
VCC	Alimentazione	3V3
GND	Massa	GND
SDA	Dati I2C (SDA)	D21
SCL	Clock I2C (SCL)	D22
INT	Interrupt	D35	Alarm / timer output, open drain, optional
CLKOUT	Non collegato all’ESP32	—	Clock output (32.768 kHz), not needed

Collegamento consigliato per l’ESP32 DevKit a 30 pin, evitando i pin della flash, di sola lettura e di strapping. BoardPilot lo controlla mentre colleghi.

Codice di partenza (Arduino)

#include <Wire.h>

void setup() {
  Serial.begin(115200);
  Wire.begin(21, 22);  // SDA = GPIO 21, SCL = GPIO 22
  Wire.beginTransmission(0x51);
  bool found = Wire.endTransmission() == 0;
  Serial.println(found ? "PCF8563 real-time clock module found at 0x51" : "Not found: check power, GND and SDA/SCL");
}

void loop() {}

Fonti

NXP PCF8563 datasheet, Slave address A2h/A3h (7-bit 0x51); INT open drain; supply 1.0 to 5.5 V
Common PCF8563 modules, Header order varies between boards: check the silkscreen

Provalo in 3D in BoardPilot

BoardPilot Dati del componente (JSON)

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Dati dei componenti: CC BY 4.0, riutilizzabili citando BoardPilot.