Add M5Stack CoreS3 SE board

_board/m5stack_cores3_se.md

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+---
+layout: download
+board_id: "m5stack_cores3_se"
+title: "CoreS3 SE ESP32S3 IoT Download"
+name: "CoreS3 SE ESP32S3 IoT"
+manufacturer: "M5Stack"
+board_url:
+ - "https://docs.m5stack.com/en/core/CoreS3%20SE"
+board_image: "m5stack_cores3_se.jpg"
+date_added: 2026-02-03
+family: esp32s3
+bootloader_id: m5stack_cores3_se
+features:
+  - Speaker
+  - Display
+  - Wi-Fi
+  - Bluetooth/BTLE
+  - USB-C
+---
+
+**CoreS3 SE** is a streamlined version of the third-generation M5Stack Core series. Powered by the ESP32-S3, it features a dual-core Xtensa LX7 processor running at 240MHz with built-in Wi-Fi and Bluetooth connectivity. It comes with 16MB of onboard flash memory and 8MB of PSRAM.
+
+Compared to the standard CoreS3, the SE version removes the camera, proximity sensor, IMU (BMI270), and magnetometer (BMM150) for a lower price point while retaining the core functionality.
+
+CoreS3 SE features a **2.0-inch** capacitive touch IPS screen protected by high-strength glass. Power management is handled by the **AXP2101** chip with a 4-way power flow control loop for efficient, low-power operation. The device includes a **BM8563** RTC chip for accurate timing and sleep-timer wake-up functions.
+
+Sound output uses the high-fidelity 16-bit I2S **AW88298** power amplifier chip with a built-in 1W speaker. For audio input, the kit incorporates the **ES7210** audio decoding chip with dual microphones.
+
+**Note:** This build includes support for the M5GO Battery Bottom 3 accessory. The SD card is not yet functional in this build.
+
+## Technical details
+
+- ESP32-S3 dual-core processor @ 240MHz
+- 16MB Flash, 8MB PSRAM
+- 2.0-inch capacitive touch IPS display
+- Wi-Fi and Bluetooth/BLE connectivity
+- USB-C with OTG and CDC support
+- AXP2101 power management (low power design)
+- BM8563 RTC chip
+- AW88298 I2S amplifier with 1W speaker
+- ES7210 audio decoder with dual microphones
+- MicroSD card slot (not yet functional)
+
+## Documentation
+
+* [CoreS3 SE Documentation](https://docs.m5stack.com/en/core/CoreS3%20SE)
+
+## Purchase
+
+* [M5Stack Shop](https://shop.m5stack.com/products/m5stack-cores3-se-iot-controller-w-o-battery-bottom)