Anonymous
Not applicable
Apr 16, 2014
02:43 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Apr 16, 2014
02:43 PM
My current design uses a PSoC3 and Microchip RN42 Bluetooth module. I haven't been using a series resistor on the UART lines between the two devices, but I see a lot of design that do use series resistors between digital communication lines.
Should I include series resistors between PSoC and BT module? Looks like the RN42 can handle a max of 5mA per pin.
Labels
- Labels:
-
PSoC 3
1 Reply
Apr 16, 2014
04:35 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Apr 16, 2014
04:35 PM
Series R's are used primarilily in high speed digital routes
to kill the over/undershoot generated by L in route, basically
make L look incredibly lossy. If using your scope you see under
and overshoot that exceeds specs then consider them.
Usually they are picked for a specific layout, trial an error, but
20 - 100 ohms typical values.
Regards, Dana.