interfacing low power microcontroller - Electronic Circuits Projects Diagrams Free

banh · 26th July 2004, 01:41 PM

hi I'm using a microcontroller (low power), and the logic level is measured at about 2.93V for high. when interfacing with normal logic IC (AND, OR,...), the high level is 5V. How do i convert from 2.93V to 5V? Is there any level shifter chip i can use? or is there any other way?

**Nigel Goodwin** · 26th July 2004, 09:43 PM

Quote:

Originally Posted by banh

hi I'm using a microcontroller (low power), and the logic level is measured at about 2.93V for high. when interfacing with normal logic IC (AND, OR,...), the high level is 5V. How do i convert from 2.93V to 5V? Is there any level shifter chip i can use? or is there any other way?

That would probably be fine, it should be within the 5V logic specs. However, why is it only 2.93V? - are you running it from a lower HT rail?.

If it is too low, you could use a simple transistor inverter to change the levels, although it would invert the logic.

banh · 27th July 2004, 12:31 AM

thanks, i find that it's just fine; no need to convert

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26th July 2004, 01:41 PM	(permalink)
banh	interfacing low power microcontroller hi I'm using a microcontroller (low power), and the logic level is measured at about 2.93V for high. when interfacing with normal logic IC (AND, OR,...), the high level is 5V. How do i convert from 2.93V to 5V? Is there any level shifter chip i can use? or is there any other way?

27th July 2004, 12:31 AM	(permalink)
banh	thanks, i find that it's just fine; no need to convert