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STM42F4 Pin 1 Identifier

Question asked by baird.hal.001 on Jul 2, 2014
Latest reply on Jul 2, 2014 by baird.hal.001
Just received some STM32F405RGT6 (64 pin LQFP) processors with two round circles on opposite corners of the package, one smaller with a concave bottom, the other larger with a flat bottom. The package description in the datasheet of course shows only one mark. Can anyone tell me which is the real Pin 1 identifier ? I suspect it is the smaller circle, but I don't want to risk letting all the smoke out of the chip finding out.

The F405 144 pin LQFP processors also just received correctly have only one pin marker.

Thanks, Hal
 

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