EFM32WG900 Datasheet, PDF (19/27 Pages) Silicon Laboratories – DSP instruction support and floating-point unit

...the world's most energy friendly microcontrollers
• If retest of the entire wafer is requested, Silicon Laboratories must be provided with the whole wafer.
Silicon Laboratories cannot retest any wafers that have been sawed, diced, backgrind or are on tape.
Initial response time for FA requests that meet these requirements will be 3 weeks.
2015-03-16 - EFM32WG900FXX - d0325_Rev1.20
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