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

Detail Description
Feature Bluetooth® Low Energy
CSA #2
Security AES-128
Frequency 2360MHz - 2500Mhz
Modulations GFSK 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
Antenna PCB trace antenna(MK14A)
External 2.4Ghz antenna(MK14B)
Mechanical Design
Dimensions Length: 12.1mm±0.2mm
Width: 8.9mm±0.2mm
Height: 2.0mm+0.1mm/-0.15mm
Package 14 Plated Half-hole pins
PCB material FR-4
Impedance 50 Ω
CPU ARM® Cortex®-M4 32-bit processor with FPU, 64 MHz
Memory 192kB flash / 24 kB RAM
Interfaces SPI master/slave with EasyDMA
Quadrature decoder (QDEC)
2x real-time counter (RTC)
2x 12-bit, 200ksps ADC
10 GPIOs
Power supply 1.7V to 3.6V
Operating temperature range -40 to 85 ℃
Clock control 32.768 kHz +/-20 ppm crystal oscillator
Power regulator DC/DC regulator setup


Type Title Date
Product Brief MK14_Bluetooth_Module_Datasheet-V1.1.pdf 2022-12-29