ESP32S3

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Specification

Item	Seeed Studio XIAO ESP32S3	Seeed Studio XIAO ESP32S3 Sense
Processor	ESP32-S3R8 Xtensa LX7 dual-core, 32-bit processor that operates at up to 240 MHz	ESP32-S3R8 Xtensa LX7 dual-core, 32-bit processor that operates at up to 240 MHz
Wireless	Complete 2.4GHz Wi-Fi subsystem BLE: Bluetooth 5.0, Bluetooth mesh	Complete 2.4GHz Wi-Fi subsystem BLE: Bluetooth 5.0, Bluetooth mesh
Built-in Sensors	—	OV2640 camera sensor for 1600×1200 Digital microphone
Memory	On-chip 8MB PSRAM & 8MB Flash	On-chip 8MB PSRAM & 8MB Flash Onboard SD Card Slot, supporting 32GB FAT
Interface	1× UART, 1× I²C, 1× I²S, 1× SPI, 11× GPIOs (PWM), 9× ADC, 1× User LED, 1× Charge LED, 1× Reset button, 1× Boot button	1× UART, 1× I²C, 1× I²S, 1× SPI, 11× GPIOs (PWM), 9× ADC, 1× User LED, 1× Charge LED, 1× B2B Connector (with 2 additional GPIOs), 1× Reset button, 1× Boot button
Dimensions	21 × 17.5 mm	21 × 17.5 × 15 mm (with expansion board)

Power Specifications

	XIAO ESP32S3	XIAO ESP32S3 Sense
Circuit operating voltage (ready to operate)	- Type-C: 5V @ 19 mA - BAT: 3.8V @ 22 mA	- Type-C: 5V @ 38.3 mA - BAT: 3.8V @ 43.2 mA (with expansion board)

Webcam Web application

Type-C:
- Average power consumption: 5V / 138 mA
- Photo moment: 5V / 341 mA
Battery:
- Average power consumption: 3.8V / 154 mA
- Photo moment: 3.8V / 304 mA

Microphone recording & SD card writing

Type-C:
- Average power consumption: 5V / 46.5 mA
- Peak power consumption: 5V / 89.6 mA
Battery:
- Average power consumption: 3.8V / 54.4 mA
- Peak power consumption: 3.8V / 108 mA

Charging battery current:

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Low Power Consumption Modes (Battery voltage: 3.8V)

Base board only:
- Modem-sleep: 25.5 mA
- Light-sleep: 2.4 mA
- Deep Sleep: 63.768 µA
Connecting the camera:
- Modem-sleep: 44.57 mA
- Light-sleep: 5.47 mA
Connecting an SD Card:
- Modem-sleep: 32.8 mA
- Light-sleep: 3.48 mA
- Deep Sleep: 1.08 mA
Simultaneously connect camera + SD card:
- Modem-sleep: 55.72 mA
- Light-sleep: 6.56 mA
- Deep Sleep: 3.98 mA

Wireless Power Consumption (Active Mode)

Wi-Fi Enabled: ~100 mA
BLE Enabled: ~85 mA
With expansion board:
- Wi-Fi + camera: ~110 mA
- BLE + microphone + SD: ~102 mA

Working Temperature: -40°C ~ +65°C

Features

Powerful MCU Board: ESP32-S3 dual-core Xtensa LX7 @ 240 MHz, supports Arduino / MicroPython
Advanced Functionality (Sense version): Detachable OV2640 camera (1600×1200), compatible with OV5640, built-in digital mic
Elaborate Power Design: Lithium battery charging, 4 low-power modes, deep sleep as low as 14 µA (note: likely refers to specific config with SD only)
Great Memory: 8MB PSRAM + 8MB Flash + SD slot (up to 32GB FAT)
Outstanding RF: 2.4GHz Wi-Fi + BLE 5.0, >100m range with U.FL antenna
Compact Design: 21×17.5 mm, ideal for wearables and space-constrained projects

Hardware Overview