EEPROM即电可擦除可编程只读存储器,它与开发人员常用的EPROM芯片相比,具有可以联机擦除、重写、掉电后能长期保存存储的信息的优点。目前正被广泛应用于各种小型控制系统及智能仪表中。在单片机应用系统中,由于扩展外部并行存储器需要用多根地址和数据连线,不够方便。因此使 EEPROM is electrically erasable programmable read-only memory, which has the advantage of being able to save the stored information for a long time after online power-down, overwriting and power-down, compared with the EPROM chip commonly used by developers. Is currently being widely used in a variety of small control systems and smart meters. In the SCM application system, due to the expansion of external parallel memory requires multiple addresses and data connections, not convenient enough. So make