data bit rate on GPIO

shinnlin · ‎2004-10-28

Posted on October 28, 2004 at 09:30

shinnlin · ‎2004-04-29

Posted on April 30, 2004 at 05:28

If I would like to use one GPIO pin as clock source of a pheripheral, that is send 0/1/0/1 sequence on that GPIO pin, anyone know the output data bit rate of it ?

( clock rate = 1/2 * data bit rate )

hacl · ‎2004-10-27

Posted on October 28, 2004 at 06:55

Dear forum,

I have some problems with the GPIO's too. I wrote a program only toggeling one GPIO-Pin. The MCLK works with 48 MHz and PCLK1, PCLK2 works with 24 MHz.

The toggel-frequency of the Out-Pin is only 146 kHz !!

I can't believe that this will be the maximum frequency of a GPIO. What can I do ?