AnsweredAssumed Answered

7816 sharing SPI bus with higher speed devices.

Question asked by dBC on Jun 22, 2013
Latest reply on Jun 24, 2013 by pminc48

I have other devices on my SPI bus that I'd like to communicate with at 4MHz.  The 7816 lives on the same SPI bus.  When I talk to the 7816 I always set the SPI clock to 2MHz, but I'd like to set the SPI clock to 4MHz when I talk to the other devices. 

 

Is it OK to "overclock" the 7816's SPI clock so long as /CS isn't asserted at the time?   Does the 7816 ignore SCLK when /CS isn't asserted?

Outcomes