I am working with some folks on an electronics repair project, and we have come across a microcontroller with ATI part number 216T9NGBGA13FHG. We would like to substitute it with part number 216T9NGBGA13FH, which is the same part number without the trailing G. We have been able to decode the digits of the part number with the exception of that final letter, G. In order to justify the substitution should we experience a future inspection, we need some sort of datasheet stating the meaning of that trailing G, but we are unable to find it. Does anyone know the meaning and have some paperwork to prove it?