FAQ_How to calculate the response time from shutdown state to READY state

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FAQ_How to calculate the response time from shutdown state to READY state [Copy link]

 

Author: Helon CHEN, ST engineer

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Q: How to calculate the response time from shutdown state to ready state

A: To calculate the transition time from SHUTDOWN to READY, we can monitor and measure the time between the falling edge of the SDN pin and the rising edge of GPIO0 (GPIO0 is configured by default to monitor the POR signal, for details, refer to Section 5.2 of the S2-LP datasheet). To achieve the above time measurement, we can do the following:

Using two channels of the logic analyzer to monitor the SDN pin and GPIO0, we can get the conversion time between them. The final test results are as follows: