Hi,
I would like to connect my vic20 to a 3.3v microcontroller. Any suggestions on level shifter ICs to bidirectionally convert between 3.3v and 5v?
Thanks!
Patrick
Voltage level shifter recommendations?
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- Mike
- Herr VC
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- Location: Munich, Germany
- Occupation: electrical engineer
Re: Voltage level shifter recommendations?
It would be helpful if you told people what type of microcontroller you intend to use with your project. If its I/O pins are 5V tolerant, you wouldn't need to use any level shifters.
Re: Voltage level shifter recommendations?
An example....
https://www.ti.com/product/SN74CBTD3384#tech-docs
page 5 into http://focus.ti.com/pdfs/logic/bswitchprodbull.pdf
you need the CBTD version...
This "analog switch" does not buffer the I/O, but it does not need to be declared the signals direction and the High Z state.....
they are ANALOGICALLY transparent!
https://www.ti.com/product/SN74CBTD3384#tech-docs
page 5 into http://focus.ti.com/pdfs/logic/bswitchprodbull.pdf
you need the CBTD version...
This "analog switch" does not buffer the I/O, but it does not need to be declared the signals direction and the High Z state.....
they are ANALOGICALLY transparent!
"Two things are infinite, the universe and human stupidity, and I am not yet completely sure about the universe." (Albert Einstein)
Re: Voltage level shifter recommendations?
Hi Mike. Sorry for not providing more details. I was hoping to connect a raspberry pi pico. While the board can take 5v power, the i/o is 3.3v and official documentation claims it isn't 5v tolerant.
Thanks MCes. That's an interesting solution. I did not realize that such ICs existed.
Patrick
Thanks MCes. That's an interesting solution. I did not realize that such ICs existed.
Patrick
- JonBrawn
- Vic 20 Devotee
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Re: Voltage level shifter recommendations?
Working on FPGA replacement for 6560/6561
https://youtube.com/@vicenary
https://youtube.com/@vicenary
- chysn
- Vic 20 Scientist
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Re: Voltage level shifter recommendations?
Yes, but except don't pay three bucks each for them. These are $7 for 10:JonBrawn wrote: ↑Sun Sep 12, 2021 3:09 pm Or these if you're based in the US:
https://www.mouser.com/ProductDetail/Sp ... uoQAvD_BwE
https://www.amazon.com/KeeYees-Channels ... 07LG646VS/
VIC-20 Projects: wAx Assembler, TRBo: Turtle RescueBot, Helix Colony, Sub Med, Trolley Problem, Dungeon of Dance, ZEPTOPOLIS, MIDI KERNAL, The Archivist, Ed for Prophet-5
WIP: MIDIcast BASIC extension
he/him/his
WIP: MIDIcast BASIC extension
he/him/his