Using AT24C02A EEPROM

Try (or executing it one line at a time in the console - point being just to get a delay between the read and write)

I2C2.setup({scl:B10,sda:B11});
var eeprom=require("AT24").connect(I2C2, 8, 256, 0);
console.log(eeprom.write(0x64,"Merhaba")­);

setTimeout("console.log(eeprom.read(0x64,7));",20);

When you write a single page, it just returns - it doesn't wait out the 10ms internally timed write cycle, so it may still be unresponsive in write cycle if you try to access it immediately after that.