[Layout] Ground plane recommendation for STM32 on BMS board
Context (brief):Board: BMS that charges/discharges cells at 1–2 AMCU: STM32G474RET6 using HSI, 3× ADC, 1× DAC, USB FS (D+, D−), a few GPIOs.Constraint: Battery sense node carries an unavoidable ~20 MHz component from an external stim source (cannot ...