MDBT40-256RV3 nRF51822 based BLE module

MDBT40-256RV3 nRF51822 based BLE module

SKU 317030026
50+ Available
$7.50/ 1pcs+
$7.12/ 10pcs+


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


1. Dual Transmission Mode of BLE & RF 2.4G upon customer preference. 

2. Compact size with (L) 18 x (W) 10 x (H) 3.2 mm 

3. Low power requirements, ultra-low peak, average and idle mode power consumption. 

4. Compatible with a large installed base of mobile phones, tablets and computers. 

5. 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 

6. BLE & RF transmission switching may help products to fit all operation system 

7. 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

Technical Details

Dimensions10mm x 18mm x 3.20mm
WeightG.W 2g     N.W 2g

Part List







Questions and Answers

Does this module come programmed by a specific firmware by Seeed, or does it come blank as from Raytac?
on Jun 02,2017
Reply upvote ()
As I bought, it was broadcasting as Raytec...
on Sep 07,2017 13:39 PM
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    MDBT40-256RV3 nRF51822 based BLE module

    SKU 317030026
    50+ Available
    $7.50/ 1pcs+
    $7.12/ 10pcs+
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