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Author Topic: With FT232BM crystal oscillator is required/option  (Read 362 times)
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Does anybody know if the FT232BM usb to serial converter chip requires the 6Mhz crystal oscillator to be connected or it can work without an external oscillator? I made one without the external oscillator and I am getting "the usb device malfunctioned" when connected to the usb port. Anyone else had this problem? How to solve it.

Thanks in advance.
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The FT232B requires an oscillator, the later FT2323R has an internal clock and runs just fine on it's own.
Additionally, the FT232B requires a 1K5 resistor from RSTOUT# to USB-DP. The recommended con fig also includes resistors between USB-Dx and the USB port as well as one between VCCIO and AVCC.
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Thanks for the information spiffed.  smiley
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