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| STM32L151RET6 chips faulty/bad/fake ? |
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| voltsandjolts:
Newark has a few hundred of these now, if you want to grab some genuine ones for testing/comparison. https://www.newark.com/stmicroelectronics/stm32l151ret6/mcu-32bit-32mhz-lqfp-64/dp/42Y1069 |
| tom66:
An STM32 that's in stock? Say it ain't so! |
| DeanA:
--- Quote from: voltsandjolts on October 09, 2022, 06:28:22 pm ---Newark has a few hundred of these now, if you want to grab some genuine ones for testing/comparison. https://www.newark.com/stmicroelectronics/stm32l151ret6/mcu-32bit-32mhz-lqfp-64/dp/42Y1069 --- End quote --- Yes, thanks, we plan to get some of those for comparison. |
| DeanA:
--- Quote from: HwAoRrDk on October 08, 2022, 02:35:16 pm ---Year '0' is probably 2020, and year '7' probably 2017. Especially when you consider that 2020 matches the date on the label shown. Is it me, or is the style of the legs different between the two chips? The one on the right appears to have legs that are wider at the top where they meet the plastic. --- End quote --- Yes, I had a look under the binocular scope and the 734 datcode chips (the working ones) have wider leads at the top. |
| dietert1:
--- Quote from: jmelson on October 09, 2022, 06:01:19 pm --- --- Quote from: dietert1 on October 08, 2022, 03:39:59 pm ---The right one in the image is probably fake. I just checked several STM32 in 64 flatpack and the pin 1 marking on all of them has a curved bottom, like the left one in the image. .. --- End quote --- But, the OP said the one on the RIGHT works fine, it is the LEFT chip he is asking about! Jon --- End quote --- So, then it's not about fakes but about silicon revisions and it's worth looking at the error sheet. STM won't hesitate to apply changes for resolving known hardware errors. Regards, Dieter |
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