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ST-link Vapp highest series resistor

CGadg
Associate III

‎2024-10-24 11:09 PM

What is the highest value series resistor which can be put into the ICSP Vapp pin a design?

It being connected to VDD and presenting a risk of harm if connected wrongly. 

I can spend time testing this but would prefer to know if this has a definite value.

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3 REPLIES 3
CGadg
Associate III

‎2024-10-30 3:36 AM

I tested 5k, errors only. 2.5k seemed OK, and I only need 330R so that will do.

I'll leave this open for further comments. My programmer is the ST-LINK V2

Andrew Neil
Guru
In response to CGadg

‎2024-10-30 3:57 AM

@CGadg wrote:

My programmer is the ST-LINK V2

Genuine, or clone?

https://community.st.com/t5/stm32-mcus/how-to-recognize-a-genuine-st-link-v2-versus-a-cloned-one/tac-p/703663/highlight/true#M965

 

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.
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CGadg
Associate III
In response to Andrew Neil

‎2024-10-30 4:06 AM

It's a genuine one

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