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Microchip's 18F2455 28 Pin USB v2.0 compliant processor. 12K of program space and 24 I/O lines, 10 of which are 10bit Analog to Digital converter capable. Runs up to 48MHz with external crystal. Package can be programmed in circuit.
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Can this run off the internal clock and still be able to use the USB, or do I need an external crystal for that? (and what speed would I need)?
thanks