MK14 nRF52805 Module + Bluetooth 5.2

  • Nordic® Semiconductor nRF52805 SoC solution
  • Bluetooth 5 (2 Mbps,CSA #2)
  • 64 MHz ARM® Cortex-M4F CPU
  • 192kB Flash and 24kB RAM
  • 1.7 V to 3.6 V
  • 12.1 x 8.9 x 2.0mm (with shield)
  • 8 GPIOs
  • Antenna(MK14A – PCB antenna , MK14B – u.FL connector)
  • Highly flexible multiprotocol SoC ideally suited for Bluetooth® Low Energy, ANT+ and 2.4GHz ultra low-power wireless applications
MK01 Smallest Bluetooth Mosule Certificate icon

Product Instruction

The MK14 series nRF52805 module is a very low-cost Bluetooth module designed by MOKOsmart using the latest Nordic Bluetooth 5.2SoC-nRF52805.

MK14 Bluetooth 5.2 module has a very small size of 12.1mmx8.9mm, with an RF design that has been professionally adjusted by MOKOsmart engineers, and can be quickly laid out on the user’s PCB. The MK14 series has multi-protocol support Bluetooth Low Energy and 2.4GHz, its radio can provide up to +4dBm power output and -97dBm sensitivity (1 Mbps Bluetooth low energy), link budget of 101dBm, with 2 Mbps low energy Bluetooth high Rate mode and enhanced channel selection algorithm #2 (CSA #2) function.

MK14 series Bluetooth nRF52805 module has two different models — MK14A and MK14B

MK14 Bluetooth nrf52805 Module Structure diagram
Bluetooth nRF52805 module MK14A


MK14A integrates a high-performance PCB antenna

Bluetooth nRF52805 module MK14B


MK14B uses a u.FL connector and requires an external antenna.

Product Specifications

FeatureBluetooth® Low Energy
CSA #2
Frequency2360MHz - 2500Mhz
ModulationsGFSK at 1 Mbps rates
Transmit power+4 dBm maximum
Configurable down to -40dBm
Receiver sensitivity- 97 dBm at Bluetooth® LE/2.4GHz 1 Mbps mode
- 94 dBm at Bluetooth® LE/2.4GHz 2 Mbps mode
- 94 dBm at 1 Mbps ANT mode
AntennaPCB trace antenna(MK14A)
External 2.4Ghz antenna(MK14B)
Mechanical Design
DimensionsLength: 12.1mm±0.2mm
Width: 8.9mm±0.2mm
Height: 2.0mm+0.1mm/-0.15mm
Package14 Plated Half-hole pins
PCB materialFR-4
Impedance50 Ω
CPUARM® Cortex®-M4 32-bit processor with FPU, 64 MHz
Memory192kB flash / 24 kB RAM
InterfacesSPI master/slave with EasyDMA
Quadrature decoder (QDEC)
2x real-time counter (RTC)
2x 12-bit, 200ksps ADC
10 GPIOs
Power supply1.7V to 3.6V
Operating temperature range-40 to 85 ℃
Clock control32.768 kHz +/-20 ppm crystal oscillator
Power regulatorDC/DC regulator setup

Support Links

Main Chip SolutionnRF52805 Product Specification
User MannualBluetooth UART Transparent Transmission
Datasheet - MK14 Bluetooth Module
SchematicSchematic - MK14A
Schematic - MK14B
Product List - Bluetooth Module

Support Links

Main Chip Solution

User Mannual

Datasheet - MK14 Bluetooth Module

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Schematic - MK14A

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Schematic - MK14B

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