3.3 V Logic interface to stamp?
3.3 V Logic interface to stamp?
Hi!
I am wondering if anyone knows of an easy way to interface 3.3 volt logic with the stamp.· Is this possible?
Thanks!
--Scott
Hi!
I am wondering if anyone knows of an easy way to interface 3.3 volt logic with the stamp.· Is this possible?
Thanks!
--Scott
Comments
>Hi!
>
>I am wondering if anyone knows of an easy way to interface 3.3 volt logic
>with the stamp. Is this possible?
>
>Thanks!
>
>--Scott
>
>Your use of Yahoo! Groups is subject to the
><http://docs.yahoo.com/info/terms/>Yahoo! Terms of Service.
Try something like this....
2.2K 4.7K
Stamp I/O <<<--o--/\/\--o--/\/\---->>> GND
| |
| | 220
o---|<---o--/\/\---->>> 3.3V I/O
generic
Beau Schwabe IC Mask Designer
National Semiconductor Network Products Division
500 Pinnacle Court, Suite 525 Mail Stop GA1 Norcross, GA 30071
This circuit looks good.· I am hoping for some kind of a bus-interface type of chip that would have 5V logic on one side and 3.3 V logic on the other.· I'm want to use nearly all of the datalines on the stamp to access low-voltage logic and a circuit with discrete components would require a very large part count.· Would a wide-voltage CMOS buffer work?
Scott
Try something like this....
·················· 2.2K···· 4.7K
Stamp I/O <<<--o--/\/\--o--/\/\---->>> GND
··············· |······· |
··············· |······· |· 220
··············· o---|<---o--/\/\---->>> 3.3V I/O
················· generic
Beau Schwabe·················· IC Mask Designer
National Semiconductor········ Network Products Division
500 Pinnacle Court, Suite 525· Mail Stop GA1··· Norcross, GA 30071
·
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
be a problem but the from reverse direction may be.
ACJacques
Scott Winn wrote:
>
> Hi!
>
> I am wondering if anyone knows of an easy way to interface 3.3 volt
> logic with the stamp. Is this possible?
>
> Thanks!
>
> --Scott
>
> Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
>bus-interface type of chip that would have 5V logic on one side and
>3.3 V logic on the other. I'm want to use nearly all of the
>datalines on the stamp to access low-voltage logic and a circuit
>with discrete components would require a very large part count.
>Would a wide-voltage CMOS buffer work?
>
>Scott
>
>
>Try something like this....
>
> 2.2K 4.7K
>Stamp I/O <<<--o--/\/\--o--/\/\---->>> GND
> | |
> | | 220
> o---|<---o--/\/\---->>> 3.3V I/O
> generic
Pericom offers a lot of inter-bus chips:
http://www.pericom.com/products/index.html
It could be a lot simpler if each line will be either an input or an
output, but not both. Beau's clever circuit does both.
-- Tracy