Copy Microchip PIC18LF1230 MCU Flash Firmware from its locked flash memory, the fuse bit of microcontroller pic18lf1230 will be decrypted, and read embedded binary file from pic18lf1230 microprocessor;
The Enhanced USART module supports the automatic detection and calibration of baud rate. This feature is active only in Asynchronous mode and while the WUE bit is clear.
The automatic baud rate measurement sequence begins whenever a Start bit is received and the ABDEN bit is set. The calculation is self-averaging.
In the Auto-Baud Rate Detect (ABD) mode, the clock to the BRG is reversed. Rather than the BRG clocking the incoming RX signal when extract code from mcu pic18f1220, the RX signal is timing the BRG. In ABD mode, the internal Baud Rate Generator is used as a counter to time the bit period of the incoming serial byte stream.
Once the ABDEN bit is set, the state machine will clear the BRG and look for a Start bit. The Auto-Baud Detect must receive a byte with the value 55h to extract mcu pic18f1320 eeprom memory (ASCII “U”, which is also the LIN bus Sync character), in order to calculate the proper bit rate.
The measurement is taken over both a low and a high bit time in order to minimize any effects caused by asymmetry of the incoming sig- nal.