CODEWITHSUNDEEP
embeddeduart
rocko445
rocko445

Reputation: 127

how to avoid damaging controller during UART communication

i am trying to communicate with my board which uses efm32lg230f256 controller. I want to buy a cable for RS232 UART communication which properties shown in the table and link bellow. In the table bellow from the data sheet i cant see to what voltage the controller can accept? There could be situation where my PC will send a command with a higher values then the controller can handle and damage it. How can i make sure it wont happen? Thanks. https://www.silabs.com/documents/public/data-sheets/efm32lg-datasheet.pdf

https://www.mouser.co.il/datasheet/2/163/DS_C232HD_UART_CABLE-4313.pdf enter image description here

enter image description here

Upvotes: 0

Views: 188

Answers (1)

the busybee
the busybee

Reputation: 12630

Chapter 4.2 of the data sheet shows the maximum values. Since the shown cable works at 3.3V levels, it should match perecftly if you power your controller with 3.3V.

Upvotes: 1

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