As the first wireless product in the Seeed XIAO family, Seeed XIAO BLE has equipped a powerful Nordic nRF52840 MCU which is designed in a Bluetooth 5.0 module, built around 32-bit ARM Cortex-M4 CPU with Floating-Point Unit(FPU) operating at 64Mhz. With the capability of wireless connection, it still remains the Seeed XIAO series classic form-factor of small and exquisite which can be used for wearable devices and Internet of Things projects. Furthermore, it only costs 5 μA in the deep sleep model and it supports battery charge management because of the BQ25101 chip. To better support IoT and TinyML AI projects, there is an advanced version "Seeed XIAO BLE Sense" that carries both 6-axis IMU and PDM microphones.

Features:

• Powerful CPU: Nordic nRF52840, ARM Cortex-M4 32-bit processor with FPU operating at 64 MHz
• Wireless capabilities: Bluetooth 5.0, NFC, and ZigBee module with onboard antenna
• Ultra-small size: 21 x 17.5mm, Seeed Xiao series classic form-factor for wearable devices
• Ultra-low sleep power: 5 μA, deep sleep model
• Battery charging chip: BQ25101 chip supported lithium battery charge management
• Rich interface: 1x Reset button, Ix UART, 1x IIC, 1x SPI, 1x NFC, 1x SWD, 11x GPIO, 6x ADC, 1x Three-in-one LED,1x User LED
• Onboard 2 MB flash
• Onboard PDM microphone and 6-axis IMU (only for XIAO BLE nRF52840 Sense)
• Single-sided components, surface mounting design

Specifications:

• Processor:
• Nordic nRF52840
• ARM Cortex-M4 with FPU run up to 64 MHz
• Wireless: Bluetooth 5.0/NFC/Zigbee
• On-chip Memory: 1 MB flash and 256 kB RAM
• Onboard Memory: 2 MB QSPI flash
• Interface:
• 1xUART, 1xIIC, 1xSPI, 1xNFC, 1xSWD,
• 11xGPIO(PWM), 6xADC
• Dimensions:  21 x 17.5mm
• Power:
• Circuit operating voltage: 3.3V@200mA
• Charging current: 50mA/100mA
• Input voltage (VIN): 5V
• Standby power consumption:  <5μA

Applications:

• Wearable devices
• Wireless connect
• Embedded machine learning projects
• Perfect for mini Arduino projects
• Tiny Machine Learning application

Documents:

• BQ25101 Datasheet
• Nano BLE MCU-nRF52840 PS v1.1
• Bottom-pad-positioning
• Seeed XIAO nRF52840 v1.0 SCH
• Flash_P25Q16H-UXH-IR_Datasheet

Package Includes:

• 1 x Seeed XIAO BLE nRF52840
• 2 x 7 Pins Header