【应用笔记】编码的实施 AN2614 Application note Serial numbering implementation Introduction It is common practice to give appliances a unique serial or identification number. This serial number is located in the external memory of the device, for example in EEPROM, but it can also be programmed with the MCU software, inside the MCU program memory array. In some cases, the serial number should remain secret and unreadable to external devices. In other cases, it should be readable from the MCU by a remote PC thr……