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SIM508 Serial port interface signal levels
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alzomor



Joined: 09 Jun 2005
Posts: 626
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Location: Cairo
Post09 Oct 2009 15:56   

SIM508 Serial port interface signal levels
Hi

In SIM508 module Hardware design Manual
the max input level for input signals on serial port is 3.2V
While the whole system on the Eval board is supplied from a 4.2 adjustable Voltage regulator.
My Question is
IS the serial port interface capable of reciveing signals higher than 3.2V, and if not How dose the eval board work with a single 4.2V Supply?

Salam
Hossam Alzomor
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