Espressif Systems ESP32-S3-MINI-1 User Manual page 7

2 Pin Definitions
Name No.
IO42 38
TXD0 39
RXD0 40
IO45 41
IO46 44
EN 45
a
P: power supply; I: input; O: output; T: high impedance. Pin functions in bold font are the default pin functions.
For pin 28 ∼ 29, 31 ∼ 33, the default function is decided by eFuse bit.
Espressif Systems
Table 2 – cont'd from previous page
a
Type Function
I/O/T MTMS, GPIO42
I/O/T U0TXD, GPIO43, CLK_OUT1
I/O/T U0RXD, GPIO44, CLK_OUT2
I/O/T GPIO45
I/O/T GPIO46
High: on, enables the chip.
I Low: off, the chip powers off.
Note: Do not leave the EN pin floating.
7
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ESP32-S3-MINI-1 & MINI-1U User Manual v0.6