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
UART,SPI,TWI,ADC
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

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

Product Specifications

Detail	Description
Bluetooth
Feature	Bluetooth® Low Energy 1M LE PHY CSA #2
Security	AES-128
Radio
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
Hardware
CPU	ARM® Cortex®-M4 32-bit processor with FPU, 64 MHz
Memory	192kB flash / 24 kB RAM
Interfaces	SPI master/slave with EasyDMA UART (CTS/RTS) 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

Documentation

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