ESP32-S3 maximum output current per GPIO still 40 mA or not
Posted: Tue May 24, 2022 8:59 pm
Hello everyone. I only could find reading the datasheet that "The default drive strength of GPIO19 ~ 20 is 2’d3 (~40 mA)" and "The default drive strength of other pins is 2’d2 (~20 mA)". But there is no IO_mux table as in the ESP32 datasheet.
Can we assume that it didn't change anything regarding the maximum output current the S3 can give per GPIO? By default, it would be 20 mA per GPIO, and if configured to drive strength 3, it would be 40 mA per GPIO.
Is that right?
But 45 GPIOS x 40 mA would be 1800 mA, a lot more than the Cumulative IO output current (1500 mA), so the S3 could never give 40 mA simultaneously to all its 45 GPIOS. Right?
Can we assume that it didn't change anything regarding the maximum output current the S3 can give per GPIO? By default, it would be 20 mA per GPIO, and if configured to drive strength 3, it would be 40 mA per GPIO.
Is that right?
But 45 GPIOS x 40 mA would be 1800 mA, a lot more than the Cumulative IO output current (1500 mA), so the S3 could never give 40 mA simultaneously to all its 45 GPIOS. Right?