Quote Originally Posted by rsocor01 View Post
Also, the 18F46J50 has a very interesting feature which is "On-Chip USB Transceiver with Crystal-less operation". Which means "High-Precision Internal Oscillator (±0.15% typ.) for USB", so no need for an external crystal oscillator . I will keep this chip in mind for my own projects.
Only low speed USB (1.5 Mbps) is supported in "crystal-less mode".
For full speed operation (12 Mbps) you'll need to use an external xtal.
Still... not bad.

And it's even got a RTCC calibration register that lets you "fine tune" the oscillator for the RTC.


steve