#include <EEPROM.h>
byte data[400]; //equal in size to 200 "int" variables

unsigned long startTimer;
unsigned long endTimer;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  startTimer = millis();
  for (int i = 0; i < sizeof(data); i++) {
    EEPROM.write(i, data[i]);
  }
  endTimer = millis();
  Serial.println(endTimer - startTimer);

}

void loop() {
  // put your main code here, to run repeatedly:
}