#include <Wire.h>
#define eeprom 0x50

byte B = 12;
byte b = 0;
unsigned int Direcion = 10;

void setup()
{
  Wire.begin();
  Serial.begin(9600);
  delay(6);
}

void loop(){

  Serial.print("Escribir ");
  Serial.print(B, DEC);
  Serial.print(" --> ");
  Serial.print(B, HEX);
  Serial.print(" HEX en ");
  Serial.print(Direcion);
  Serial.println();

  Wire.beginTransmission(eeprom);
  Wire.write((int)(Direcion >> 8));
  Wire.write((int)(Direcion & 0xFF));
  Wire.write(b);
  Wire.endTransmission();
  delay(5);



  Serial.print("Leer direccion : ");
  Serial.print(Direcion);
  Serial.print(" ... ");
  Wire.beginTransmission(eeprom);
  Wire.write((int)(Direcion >> 8));   // MSB
  Wire.write((int)(Direcion & 0xFF)); // LSB
  Wire.endTransmission();
  delay(5);
  Wire.requestFrom(Direcion,1);
  if (Wire.available()) {b = Wire.read();}
  Serial.print(b, HEX);
  Serial.print(" --> ");
  Serial.print(b, DEC);
}