MB85RC256V I2C FRAM breakout (32 KB) con ESP32

Alimentazione 3.3-5 V Bus I2C Indirizzo I2C 0x50 / 0x51 / 0x52 / 0x53 / 0x54 / 0x55 / 0x56 / 0x57

Pin e collegamento all’ESP32

Pin	Ruolo	Pin ESP32	Note
VCC	Alimentazione	3V3
GND	Massa	GND
WP	Non collegato all’ESP32	—	Write protect: LOW (default) allows writing
SCL	Clock I2C (SCL)	D22
SDA	Dati I2C (SDA)	D21
A2	Non collegato all’ESP32	—	Address bit, pulled LOW
A1	Non collegato all’ESP32	—
A0	Non collegato all’ESP32	—

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(0x50);
  bool found = Wire.endTransmission() == 0;
  Serial.println(found ? "MB85RC256V I2C FRAM breakout (32 KB) found at 0x50" : "Not found: check power, GND and SDA/SCL");
}

void loop() {}

Fonti

Fujitsu MB85RC256V datasheet, Device address 1010 A2 A1 A0 (0x50 to 0x57); supply 2.7 to 5.5 V; 10^12 write cycles
Adafruit I2C FRAM breakout guide, Pinouts. Order differs 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.