Hey guys, maybe a newbie question for some of you but I'm looking for some advice...
I'm using a TI DSP microcontroller that uses 3.3V logic and attempting to use the Parallax PING))) sensor. This particular sensor waits for a 10us high logic from the microcontroller and then takes a distance measurement and reports back a 5V high logic that translates into distance for the amount of time. The parallax sensor uses a single "Signal" pin....
I think I can get away with the microcontroller sending 3.3v but how do I get rectify the 5v down to 3.3 to the microcontoller and still preserve the singal pathway?
Any help?
Thanks!
3.3V and 5V Logic Argh!
- Chris Smith
- Posts: 4325
- Joined: Tue Dec 04, 2001 1:01 am
- Location: Bieber Ca.
- Chris Smith
- Posts: 4325
- Joined: Tue Dec 04, 2001 1:01 am
- Location: Bieber Ca.
I'm not familiar with the chip you are using - does it have a bi-directional data line? There are translator designs for that using mosfets. there are also translator chips. here's a decent ap note - http://www.maxim-ic.com/appnotes.cfm/an_pk/1159
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