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ESP32-A1S SoC module
ESP32-A1S
Specification
Version V1.4
Copyright ©2020
Page 1
18
of
Copyright © 2020 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved

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Summary of Contents for Ai-Thinker Technology ESP32-A1S

  • Page 1 ESP32-A1S SoC module ESP32-A1S Specification Version V1.4 Copyright ©2020 Page 1 Copyright © 2020 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved...
  • Page 2 Shenzhen Ai-Thinker Technology Co., Ltd. reserves the right to modify the contents of this manual without any notice. This manual is only used as a guide, and Shenzhen Ai-Thinker Technology Co., Ltd. makes every effort to provide accurate information in this manual, but Shenzhen Ai-Thinker Technology Co., Ltd.
  • Page 3: Table Of Contents

    3. Function description............................. 10 4. Electrical parameters............................12 5. Design guidance..............................14 6. Module internal chip connection table......................... 16 7. Reflow soldering curve............................17 8. Package Information.............................18 9. Contact us................................18 Page 3 Copyright © 2020 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved...
  • Page 4 V1.1 2020.06.09 Yiji Xie Update V1.2 2020.08.04 Update silk screen V1.3 2020.10.20 Update the pin definition table and Junx application circuit content V1.4 2021.03.31 Updates Hong Xv Page 4 Copyright © 2020 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved...
  • Page 5: Product Overview

    It is an ideal solution for IoT applications. Internal circuit of ESP32-A1S module is highly integrated. It supports a variety of peripherals, secondary development and assists in achieving product differentiation features.
  • Page 6  Support a variety of mainstream compression and lossless audio formats, including M4A, AAC, FLAC, OGG, OPUS, MP3, etc.  Support Wi-Fi, BT-audio, DLNA, Line-in and other audio source input Page 6 Copyright © 2020 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved...
  • Page 7 WPA/WPA2/WPA2-Enterprise/WPS Power supply range Voltage 3.0V ~ 3.6V, current >500mA Operating -20 ℃ ~ 85℃ temperature Storage -40 ℃ ~ 85℃ , < 90%RH environment Weight 2.5±0.05g Page 7 Copyright © 2020 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved...
  • Page 8: Pin Function

    ESP32-A1S SoC module 2. Pin function ESP32-A1S module is connected to 38 interfaces, table 2.1 and table 2.2 is the interface definition. table 2.1 ESP32-A1S Pin diagram table 2.2 pin function definition Function Description Ground 3.3V power supply(VDD); The output current of the external power...
  • Page 9 HPOUTL Headphone output HPOUTR Headphone output GPIO5,VSPICS0,HS1_DATA6,EMAC_RX_CLK IO18 GPIO18,VSPICLK,HS1_DATA7 IO23 GPIO23,VSPID,HS1_STROBE IO19 GPIO19,VSPIQ,U0CTS,EMAC_TXD0 IO22 GPIO22,VSPIWP,U0RTS,EMAC_TXD1 IO21 GPIO21,VSPIHD,EMAC_TX_EN Enable chip, active high TXD0 GPIO1,U0TXD,CLK_OUT3,EMAC_RXD2 RXD0 GPIO3,U0RXD,CLK_OUT2 Ground Page 9of 18 Copyright © 2020 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved...
  • Page 10: Function Description

    The signal-to-noise ratio is as high as 95dB during the recording path  Capacitor-free stereo headphone driver, 18mW@1.8V  Two stereo differential speaker outputs\  Two low-noise analog microphone offsets  Page 10of 18 Copyright © 2020 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved...
  • Page 11 Light-sleep mode:The CPU is suspended. RTC and ULP coprocessors run. Any wake-up  event (MAC, host, RTC timer or external interrupt) will wake up the chip Page 11of 18 Copyright © 2020 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved...
  • Page 12: Electrical Parameters

    ESP32-A1S SoC module 4. Electrical parameters ESP32-A1S series modules are electrostatic sensitive devices, special precautions need to be taken when handling Unless otherwise specified, the test environment for the specifications listed in this chapter is: VBAT= 3.3V,TA= 27℃ Limit parameters:...
  • Page 13 F = F0 + > 3 MHz F = F0 - > 3 MHz ∆f1avg ∆f2max -0.92 ∆f2avg/∆f1avg ICFT Frequency drift rate - kHz/50us Frequency drift Page 13of 18 Copyright © 2020 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved...
  • Page 14: Design Guidance

    ESP32-A1S SoC module 5. Design guidance 5.1 Application circuit Page 14of 18 Copyright © 2020 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved...
  • Page 15 (4) It is recommended to add ESD devices to the 3.3V power interface. Page 15of 18 Copyright © 2020 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved...
  • Page 16: Module Internal Chip Connection Table

    6. Module internal chip connection table ESP32 AC101 Chip nterface I2S Pin connection IO35 I2S_SOUT IO25 I2S_SDIN IO26 I2S_LRCK IO27 I2S_BCLK I2S_MCLK I2C Pin connection IO32 IO33 Page 16of 18 Copyright © 2020 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved...
  • Page 17: Reflow Soldering Curve

    ESP32-A1S SoC module 7. Reflow soldering curve Page 17of 18 Copyright © 2020 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved...
  • Page 18: Package Information

    ESP32-A1S SoC module 8. Package Information As shown in the figure below, the packaging of ESP32-A1S is tape. 9. Contact us Official website:https://www.ai-thinker.com Development DOCS:https://docs.ai-thinker.com Official Forum:http://bbs.ai-thinker.com Sample purchase:https://ai-thinker.en.alibaba.com/ Business cooperation:overseas@aithinker.com Technical support:support@aithinker.com Company Address:Room 403,408-410, Block C, Huafeng Smart Innovation Port, Gushu 2nd Road, Xixiang, Baoan District, Shenzhen.

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