Hi, i want to use Henning Carlsens SPIFlash Library. He recommends some flash chips that all are running on <=3.6V. Because the Arduino has its 5v-logic, i need to know how to transform the voltage on the pins used by the flash-communication/power supply. i only found an article about how to change the whole Mega-Voltage. what i want to do is change just these pins. somebody recommended a 74HC4050-chip for transformation. my question is, if somebody ever did it, because i am not sure about the signal speeds etc. is it possible to simply use some resistors between the arduino-pins and the flash? will that work, or does the signal-behaviour change in that case? any experiences?
thanks!