Ai-Thinker ESP32-A1S - Schematic Diagram; Module Schematic

ESP32-A1S Specification V2.3
Copyright © 2021 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved
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36
TXD0
GPIO1, U0TXD, CLK_OUT3, EMAC_RXD2
37
RXD0
GPIO3, U0RXD, CLK_OUT2
38
GND
Grounded
List 9 Module startup mode description
System startup mode
PIN
Default
SPI boot mode
Download start
mode
GPIO 0
pull up
1
0
GPIO 2
drop down
Irrelevant
0
Note: Some pins have been internally pulled up, please refer to the schematic
5. Schematic diagram
5.1. Module schematic