Ai-Thinker ESP32-A1S User Manual

ESP32-A1S Specification V2.3
Copyright © 2021 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved
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RTC_GPIO13, HS2_CMD, SD_CMD, EMAC_RXD3
11
IO2
GPIO2, ADC2_CH2, TOUCH2, RTC_GPIO12, HSPIWP,
HS2_DATA0, SD_DATA0
12
IO4
GPIO4, ADC2_CH0, TOUCH0, RTC_GPIO10, HSPIHD,
HS2_DATA1, SD_DATA1, EMAC_TX_ER
13
HBIAS
Pull up to AVCC by internal 1K resistor
14
MIC2N
Audio chip RIN2 channel
15
MIC1N
Audio chip RIN1 channel
16
MBIAS
Pull up to AVCC by internal 1K resistor
17
MIC1P
Audio chip LIN1 channel
18
MIC2P
Audio chip LIN2 channel
19
GND
Grounded
20
GND
Grounded
21
LINEINR
Audio chip RIN2 channel
22
LINEINL
Audio chip LIN2 channel
23
NC
NC, suspended handling
24
SPORN
Audio chip ROUT1 channel
25
NC
NC, suspended handling
26
SPOLN
Audio chip LOUT1 channel
27
HPOUTL
Audio chip LOUT2 channel
28
HPOUTR
Audio chip ROUT2 channel
29
IO5
GPIO5, HS1_DATA6, VSPICS0, EMAC_RX_CLK
30
IO18
GPIO18, HS1_DATA7, VSPICLK
31
IO23
GPIO23, HS1_STROBE, VSPID
32
IO19
GPIO19, VSPIQ, U0CTS, EMAC_TXD0
33
IO22
GPIO22, VSPIWP, U0RTS, EMAC_TXD1
34
IO21
GPIO21, VSPIHD, EMAC_TX_EN
35
EN
Enable the chip, high level is effective.

Ai-Thinker ESP32-A1S Specifications

General

Brand	Ai-Thinker
Model	ESP32-A1S
Category	Wireless Router
Language	English