UF6812_board_troubleshooting

UF6812_board_troubleshooting - rate). Traces damaged while...

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UF 68HC12 Board Troubleshooting After building UF Board, it did not boot. Here are some of the possible reasons: Forgot to add a wirewrap connection between PAD7 on J4 (also known as ANA7) to ground. Reset switch not soldered properly. Poor electrical connections due to bad soldering. CPLD equation not correct. CPLD pin assignments not right. CPLD not put in the socket with the right orientation. Failure to program CPLD. EEPROM not programmed correctly. EEPROM/Latches/CPLD or other chips damaged. Caps not soldered with right polarity. MiniIDE terminal program or HyperTerminal not set up correctly (e.g., disconnected or wrong baud
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Unformatted text preview: rate). Traces damaged while soldering. Not following instructions when building board (e.g., address latches or resistors like R6 are not soldered). PC not set up correctly (e.g., USB port on PC not functioning properly or USB driver not installed properly). Jumpers are not in the right place. The 68HC12 has tiny hair-like solder or wire fragments across some pins. Board has a manufacturing defect. If you are not using the USB port for power, power-supply connector soldered backwards, thus, ruining the board and HC12. If you are not using the USB port for power, power supply not working properly....
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This note was uploaded on 11/13/2011 for the course EEL 4744c taught by Professor Staff during the Fall '09 term at University of Florida.

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UF6812_board_troubleshooting - rate). Traces damaged while...

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