Dear Sir or Madam:
we are evaluating multiple options to power the Vybrid using a single 3.3V supply. We are looking into a 1.5V-controlled LDO as the sequencing device shown in the block diagram attached. However, we have some concerns about the Vybrid. Could you please comment on our questions below?
Please kindly let us know what you think.
Thanks and regards,
Shoumin
已解决! 转到解答。
Q. Will a “higher-than-3.3V_S” cause any damage or malfunctions?
A. Yes, it can cause an excessive input current and even I/O buffer damage.
Q. Will this phenomenon cause the Vybrid to enter a “partially-powered” state and malfunction?
A. Yes, this can cause a malfunction. The general requirement is that no I/O pins must be externally driven until the processor is powered on.
Have a great day,
Artur
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