Hi,
I got below questions from my customer for device power-up and power-down sequence.
Customer follows the sequence in datasheet.
Q1) At power-up, as soon as CVDD is on, it seems some voltage leakage is observed on 1.8V and 0.85V power rails.
Is this expected and can be ignored?
Q2) At power-down, there is ~0.5V residual voltage on 1.8V, 1.5V and 0.85V power rails.
Because of this voltage, these rails are higher than CVDD and CVDD1 after CVDD and CVDD1 are off.
Is this also expected and can be ignored?
Please see waveforms attached.
66AK2H06_sequence.xlsx
Thanks and regards,
Koichiro Tashiro