Posted on May 17, 2011 at 12:10In my application the uPSD3234 communicates with a display via the MCU data bus, rd_ and wr_ signals from the uPSD and a CE generated through the internal CPLD. The access times for reading the display are relative slo...
Posted on May 17, 2011 at 12:10Can I connect the output MCU data bus of the upsd3434 directly to the Port 1 as input (not 5 Volt tolerant) via a matricial keyboard? Thanks
Posted on May 17, 2011 at 12:09I have read on the upsd34xx datasheet that MCU Port 1 is not 5 Volt IO Tolerant. What does it mean? Could I not drive/be driven by a peripheral 5 Volt TTL compatible? What range of voltage does it manage? Thanks
Posted on May 17, 2011 at 12:01Hi everybody... I'm looking the DK3200 schematic, and trying to understand why the LM339 IC.- Could someone tell me the function of the comparator and the use of it? Thanks.-
Posted on May 17, 2011 at 12:00Hi, I'll use an external 128k flash memory driven by a uPSD3254 and I want to know if external pull up resistors are needed on Port 0.
