Yes, although I was slightly wrong: at least for the chip I checked, the max is 32MHz using the PLL plus the internal osc. See the datasheet for the 18F8722 family, section 2.6.4 2.6.4 PLL IN INTOSC MODES The 4x Phase Locked Loop (PLL) can be used with the internal oscillator block to produce faster device clock speeds than are normally possible with the internal oscillator sources. When enabled, the PLL produces a clock speed of 16 MHz or 32 MHz. Unlike HSPLL mode, the PLL is controlled through software. The control bit, PLLEN (OSCTUNE<6>), is used to enable or disable its operation. The PLL is available when the device is configured to use the internal oscillator block as its primary clock source (FOSC<3:0> =3D 1001 or 1000). Additionally, the PLL will only function when the selected output fre- quency is either 4 MHz or 8 MHz (OSCCON<6:4> =3D 111 or 110). If both of these conditions are not met, the PLL is disabled and the PLLEN bit remains clear (writes are ignored). On Tue, Sep 8, 2009 at 8:10 PM, Funny NYPD wrote: >>20 or even 40MHz. > > Any reference? > > =A0Funny N. > Au Group Electronics, http://www.AuElectronics.com > http://www.AuElectronics.com/products > http://augroups.blogspot.com/ > > > > > ________________________________ > From: Sean Breheny > To: Microcontroller discussion list - Public. > Sent: Tuesday, September 8, 2009 6:27:40 PM > Subject: Re: [PIC] PIC 16F1936 -- is this for real? > > This is a bit late, but I wanted to point out that some PICs (in the > 18 series I think) allow you to run the internal PLL from the RC > oscillator to multiply the frequency up to 20 or even 40MHz. > > Sean > > > O > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > > > > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist