UART Connection - Voltage Translation

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UART Connection - Voltage Translation

Message non lude awneil » Sam 3 Jan 2015 15:33

The AirPi UART connection to the Raspberry Pi header has a voltage shifter which uses the 3.3V from the Raspberry Pi as reference:

AirPi_UART_Voltage_Shifter.png
AirPi UART Voltage Shifter
AirPi_UART_Voltage_Shifter.png (8.47 Kio) Vu 1043 fois


Is it permissible to apply, say, 5V to the reference input - to allow connecting to a 5V microcontroller :?:

Or 2.4V, or ...
awneil
 
Messages: 3
Inscription: Sam 3 Jan 2015 15:25
Localisation: Basingstoke, Hampshire, England

Re: UART Connection - Voltage Translation

Message non lude awneil » Sam 3 Jan 2015 15:55

awneil a écrit:Is it permissible to apply, say, 5V to the reference input - to allow connecting to a 5V microcontroller

That is, of course, instead of connecting a Raspberry Pi.
awneil
 
Messages: 3
Inscription: Sam 3 Jan 2015 15:25
Localisation: Basingstoke, Hampshire, England


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