Not Detecting ST10F276 Controller

[EPunn.1]

Hi

Thank you for reply

I have three ST10F276 Boards in that One is completely not detected,second one detected once after that not detected, third one continuously detecting ,

For your information All same boards

please suggest Why I am getting this problem.

And in one detected board I selected all banks and erased once is it disturb the bootstrap method?(in image I selected all bank and erased once)

Thanks & Regards

Eshwar

[Max]

Hello,

There is certainly some differences between your boards as you have different behaviors.

I suspect a hardware problem on the failing board : bad soldering or damaged component.

I suggest to start with the basics:

check all the supply pins first then the oscillator, reset and RPD pin.

V18 is the output of the regulator and should have 1.8V .

Debugging should be easier as you have a working board in your hands.

[EPunn.1]

Hi Max

here we are getting V18 voltage 0v, and RPD pin Voltage 0.2V ( In Working Boards 5V)

Please tell me Is ST Controllere Damaged?

Any we ordered New Controlleres.

Regards

Eshwar P