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Does Wi-Fi module IO15 need to add a pull-down resistor?

Last Updated on：2023-01-30 09:54:49

If it is a WB3S module, it does not need to be pulled down;

If it is TYWE3S and TYWE3L, it is recommended to add a pull-down resistor, because the module IO15 participates in the power-on initialization, it needs a low level at power-up, in order to prevent external interference IO15 pin affects the module startup, it is recommended that IO15 external Add pull-down resistor.