----- Original Message ----- From: "Jamie Morken" To: Sent: Monday, July 26, 2004 7:15 PM Subject: Re: [Balloon] Re: Next Balloon > Hi all, > > I was just wondering how fast the PXA27x series chips can change the state > of > their GPIO's and how long they take to respond to external interrupts? If > running at a frequency of 400MHz, can the GPIO's change state at that > frequency? Oops, just found it in the design guide: "The GPIOs are not fast-switching devices and do not switch any faster than 10 MHz." I would have thought that the GPIO's would be faster than 10MHz, the AVR micrcontrollers beat this. Does anyone know of a microcontroller or DSP that has 200MHz+ GPIO's/interrupts? cheers, Jamie Morken