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yang2
yang2
Associate III
June 24, 2020
Solved

STLINK-V3SET, No voltage on VCC pin?

  • June 24, 2020
  • 2 replies
  • 1714 views

Hello all, I just bought a ST-LINK-V3 set.

Also, I have checked the signal on vcc pin, but there are no voltage on vcc.

Is it correct?

This topic has been closed for replies.
Best answer by Andreas Bolsch

These are denoted by T_VCC, not VCC (on CN4 apparently a misprint), these pins are used to *detect* the target voltage and set the thresholds for the buffers inside the ST-Link. See footnotes below the respective table for the connector in question in UM2448.

2 replies

Andreas Bolsch
Andreas BolschBest answer
Lead III
June 24, 2020

These are denoted by T_VCC, not VCC (on CN4 apparently a misprint), these pins are used to *detect* the target voltage and set the thresholds for the buffers inside the ST-Link. See footnotes below the respective table for the connector in question in UM2448.

yang2
yang2Author
Associate III
June 24, 2020

Oh!~

Thank you Andreas,

I have see the description.

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