ESP32-A1S WiFi Bluetooth Audio Module

Description:
The ESP32-A1S is an ultra-small, powerful audio module. With a built-in advanced low-power dual-core 32-bit CPU and Codec AC101 audio decoding chip, it can be widely used in various IoT applications. It's suitable for home smart devices, smart Audio, story machine solutions, etc., the ideal solution for IoT applications.
The ESP32-A1S internal circuit is highly integrated, supports a variety of peripherals, can support secondary development. ESP32-A1S adopts an SMD package to realize the rapid production of products and provide customers with high-reliability connection mode. It is especially suitable for modern, large-scale, low-cost production methods, and is convenient for various IoT hardware terminal applications.

Specifications:
The smallest 802.11b/g/n Wi-Fi BT SoC Module
Low power 32-bit CPU, can also serve the application processor
Built-in AC101 Codec audio decoding chip, can support playing music and recording
Built-in 520 KB SRAM, external 4MPSRAM
Supports UART/SPI/I2C/PWM/ADC/DAC
Support for firmware upgrade (FOTA)
Antenna supports onboard antenna or IPEX block output
Supports a variety of mainstream compression and lossless audio formats, including M4A, AAC, FLAC, OGG, OPUS, MP3, WAV, etc.
Supports audio input methods such as MIC and Line-in.

Features:
Input Voltage: 3.3V ± 0.3V
SPI Flash: Default 32 Mbit
RAM: 520KB SRAM +4M PSRAM
Wi-Fi: 82.11 b/g/n 
Bluetooth: 4.2 BR/EDR and BLE Standards, support for A2DP, AVRC protocol
Audio Output: Supports 1 channel headphone output and 1 channel left and right speaker output
Audio Input: Supports LINEIN and 2-way MIC input
Custom I/O Ports: 14
Interface: UART, SPI, I2C
UART Baudrate: Default 115200 bps
Audio Format: MP3, WAV, M4A, AAC, FLAC, OGG, OPUS
Antenna: Onboard PCB antenna or IPEX antenna
Pin Number: 38 Pins
Operating Temperature: -20 ℃ ~ 85 ℃
Storage Temperature: -40 ℃ ~ 90 ℃
Operating Humidity: < 90% RH
Size: 31.5mm x 19mm

Package Include:
1 x ESP32 A1S Wifi Bluetooth Audio Module