Posted on May 17, 2011 at 12:03I'm sending you this letter following our last week's conversation. I use MCU uPSD3333DV-40U6 in my project, and I want to connect it to iO1500 modem. But there is a problem with the communication lines: On the one hand, the MCU Voh level is 2.7 – 3.3V (according to manufacturer definitions) but on the other hand the modem accepts only voltage bellow 3V. The question is how I can connect those two peripherals in the right way?
Thanks for your help,
