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Altera_Forum's avatar
Altera_Forum
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13 years ago

2 Serial Devices on one board

Hello all, I am currently working on a project in which I need to connect two digital sensors, a Temp & Humidity sensor(SHT 15) and an accelerometer (ADXL345) both digital sensors. They also bo...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

IIRC RS232 should be +12v/-12v negative logic (-12v is a logic 1), however a lot of modern systems only drive a much lower range, possibly even +5v/0v!

However the receivers have to allow for the full voltage range.