Hello and Anyway, I found some on DigiKey's website. They have very, very inexpensive items for the level shifters for some reason.
Seth P.S. So, I grabbed four for like about $1.25. I think if one were to bust, I could use another one. So, I got a couple drivers for motors (stepper), the change in logic (unidirectional) chips for testing which I will most likely not need, and the BBB! Wish me luck! On Tuesday, January 15, 2019 at 1:13:35 PM UTC-6, Mala Dies wrote: > > Hello Mr. Charles, > > Seth here. Okay. I was looking at the incorrect info. when looking for > CMOS info. I was searching the Rev. C SRM instead of the TRM for the am335x > SoC. Thank you, sir. > > Seth > > P.S. CMOS...good to know. Thank you. > > On Tuesday, January 15, 2019 at 11:41:24 AM UTC-6, Charles Steinkuehler > wrote: >> >> On 1/15/2019 10:30 AM, Mala Dies wrote: >> > Hello, >> > >> > I am looking to find out about the input signal from the BBB. If I am >> using >> > GPIO, what is the input signal? Is it GPIO or is it CMOS? I have done >> > little research and I am looking for some basics on answers. >> > >> > ... >> > >> > I was dealing w/ DigiKey and they wanted me to know the input signal. I >> > thought it was as easy as 3.3v to 5.0v shifting. >> >> Most of the inputs on the BBB are GPIO (General Purpose Input Output). >> Most of the pins also have other functions (eg: timer input, UART, >> etc) which can be selected via pin multiplexing. >> >> Some of the pins are not digital at all (eg: Analog ADC inputs). >> >> The I/O voltage varies, but is typically 3.3V for the digital I/O pins >> and 1.8V for the analog inputs, with a few "oddball" pins (eg: the >> real-time clock crystal pins, USB pins, etc). >> >> *ALL* of the inputs are CMOS, the AM3358 is a CMOS chip. >> >> > Seth >> > >> > P.S. I will keep up the research and I am currently searching online. I >> > will look through my SRM too. >> >> The I/O specifications are not in the TRM, they are in the data sheet >> for the specific part: >> >> http://www.ti.com/product/AM3358 >> >> -- >> Charles Steinkuehler >> [email protected] >> > -- website: http://www.machinekit.io blog: http://blog.machinekit.io github: https://github.com/machinekit --- You received this message because you are subscribed to the Google Groups "Machinekit" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. Visit this group at https://groups.google.com/group/machinekit. For more options, visit https://groups.google.com/d/optout.
