MDBT40-256RV3 nRF51822 Based BLE Module - Seeed Studio

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₹898.28 inc. GST
₹761.25 ex. GST
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MDBT40 is a BT 4.0 & BT 4.1 stack (Bluetooth low energy or BLE) module designed based onNordic nRF51822 SoC solution, which incorporates: GPIO, UART, I2C, SPI, PWM and ADC interfaces for connecting peripherals and sensors.


  • Dual Transmission Mode of BLE & RF 2.4G upon customer preference.
  • Compact size with (L) 18 x (W) 10 x (H) 3.2 mm
  • Low power requirements, ultra-low peak, average and idle mode power consumption.
  • Compatible with a large installed base of mobile phones, tablets and computers.
  • Fully coverage of BLE software stack including:
    • Proximity Profile; Heart Rate Profile; Health Thermometer Profile;
    • Blood Pressure Profile; Running Speed & Cadence Profile;
    • HID Over GATT Profile; Alert Notification Profile; Glucose Profile;
    • Cycling Speed & Cadence Profile
  • BLE & RF transmission switching may help products to fit all operation system
  • BLE & RF transmission switching may help products fit all kinds of hardware.


  • Computer peripherals and I/O devices
  • Mouse
  • Keyboard
  • Multi-touch track pad
  • Interactive entertainment devices
  • Remote control
  • 3D Glasses
  • Gaming controller
  • Personal Area Networks
  • Health/fitness sensor and monitor devices
  • Medical devices
  • Key-fobs + wrist watch
  • Remote control toys

Product Dimension

PCB SIZE (L) 18 x (W) 10 x (H) 3.2 mm


  • 2.4GHZ transceiver:
  • -93dbm sensitivity in Bluetooth low energy mode
  • TX Power -20 to +4dbm
  • RSSI (1db resolution)
  • ARM Cortex – M0 32 bit processor:
  • Serial Wire Debug (SWD)
  • S100 series SoftDevice ready
  • Memory:
  • 256kb embedded flash programmed memory
  • 32kb RAM
  • Support for non-concurrent multiprotocol operation
  • On-air compatibility with nRF24L series
  • Flexible Power Management:
  • Supply voltage range 1.8V to 3.6V
  • 2.5us wake-up using 16MHz RCOSC
  • 0.6uA @ 3V mode
  • 1.2uA @ 3V in OFF mode + 1 region RAM retention
  • 2.6uA @ 3V ON mode, all blocks IDLE
  • 8/9/10 bit ADC- 8 configurable channels
  • 31 General Purpose I/O Pins
  • One 32 bit and two 16 bit timers with counter mode
  • SPI Master / Slave
  • CPU independent Programmable Peripheral Interconnect (PPI)
  • Quadrature Decoder (QDEC)
  • AES HW encryption
  • Real Timer Counter (RTC)
  • Main Chip Solution:
  • RF IC: Nordic NRF51822/QFN48
  • Crystal Frequency 16MHZ

Extra Information

Seeed Studio

Warranty Information

All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.