在24C16内部的0---0xFF地址处依次写入256个字符，字符的内容自己设定。将24C16内部0---0xFF地址处的数据读出，并检验写入是否成功。-In the 24C16 internal 0--- 0xFF address in order to write 256 characters, the content of their character set. 24C16 0--- 0xFF will address the internal data read and write t