Small Bluetooth Module MK01

Nordic® Semiconductor nRF52832 SoC solution
Bluetooth 5 (2Mbps CSA#2 Advertising Extensions)
512kB Flash and 64kB RAM
Wide supply voltage range: 1.7 V to 3.6 V
Full set of digital interfaces including SPI/2-wire/I²S/UART/PDM/QDEC
NFC-A Tag
Dimension: 10.0×10.0x2.0mm (with shield)
22 GPIOs
Antenna (MK01A – Ceramic chip antenna MK01B – u.FL connector)

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Product Instruction

MK01 series is a powerful, highly flexible, ultra low power tiny Bluetooth® 5 modules based on Nordic® Semiconductor nRF52832 SoC solution, which has a 32 bit Arm® Cortex™-M4 CPU with floating-point unit running at 64 MHz.

MK01 smallest Bluetooth module has an ultra-small size of 10mm x 10mm with 28 LGA (Land Grid Array) 0.4mm x 0.4mm pad pins providing 22 GPIOs (including 32.768 kHz crystal and reset pins) of nRF52832CIAA (WLCSP package).

MK01 series Bluetooth module has two different models — MK01A & MK01B.

Product Specifications

Detail	Description
Bluetooth
Bluetooth version	Bluetooth® Low Energy, Bluetooth® Mesh, 1M LE PHY, 2M LE PHY, Advertising Extensions, CSA #2
Security	AES-128
LE connections	Concurrent central, observer, peripheral, and broadcaster roles with up to twenty concurrent connections along with one observer and one broadcaster
Radio
Frequency	2360MHz - 2500Mhz
Modulations	GFSK at 1 Mbps/ 2 Mbps data rates
Transmit power	+4dBm maximum Configurable down to -40dBm
Receiver sensitivity	-96 dBm in 1 Mbps Bluetooth® low energy mode -89 dBm in 2 Mbps Bluetooth® low energy mode -93 dBm in 1 Mbps ANT mode -30 dBm in whisper mode
Antenna	MK01A - Ceramic chip, Peak Gain: 0.9dBi, Efficiency: -1.8dB (66%) MK01B - Peak Gain: 3dBi, Efficiency: 85% (2.4GHz 3dBi Terminal Mount Dipole Antenna)
Current consumption
TX only (DCDC enabled, 3V) @ +4dBm / 0dBm / -4dBm / -20dBm / -40dBm	7.5mA / 5.3mA / 4.2mA / 3.2mA / 2.7mA
TX only @ +4dBm / 0dBm / -4dBm / -20dBm / -40dBm	16.6mA / 11.6mA / 9.3mA / 7.0mA / 5.9mA
RX only (DCDC enabled, 3V) @1Msps / 1Msps BLE	5.4mA
RX only @ 1Msps / 1Mbps BLE	11.7mA
RX only (DCDC enabled, 3V) @2Msps / 2Msps BLE	5.8mA
RX only @ 2Msps / 2Mbps BLE	12.9mA
System OFF mode（3V）	0.3uA
System OFF mode with full 64 kB RAM retention（3V）	0.7uA
System ON mode, no RAM retention, wake on RTC（3V）	1.9uA
Mechanical Design
Dimensions	Length: 10mm±0.2mm Width: 10mm±0.2mm Height: 2.0mm+0.1mm/-0.15mm
Package	36 LGA (Land Grid Array) pads
PCB material	FR-4
Impedance	50 Ω
Hardware
CPU	ARM® Cortex®-M4 32-bit processor with FPU, 64 MHz
Memory	512 kB flash / 64 kB RAM
Interfaces	3x SPI master/slave with EasyDMA 2x I2 C compatible 2-wire master/slave 22 GPIOs 7x 12bit, 200ksps ADC 3x real-time counter (RTC) 3x 4-channel pulse width modulator (PWM) unit with EasyDMA UART (CTS/RTS) with EasyDMA I 2 S with EasyDMA Digital microphone interface (PDM) Quadrature decoder (QDEC) NFC-A Tag
Power supply	1.7V to 3.6V
Operating temperature range	-40 to 85 ℃
Clock control	Internal 32.768 kHz +/-250 ppm RC oscillator
Power regulator	Internal LDO regulator setup

Evaluation Board

MK01-KIT evaluation board is applicable for MK01A and MK01B mini Bluetooth® module. It is a full featured evaluation board that provides a complete I/O pin and debug pin(SWD) out to headers, external 32.768 kHz crystal setup, DC/DC regulator setup, power port over USB Type-C, NFC antenna FPC connector, one RESET button, one user button and one user RGB-LED. The evaluation boards also provide the option to be powered from a CR2032 coin cell battery and have current sense hole to allow for convenient current measurements.

Documentation

Type	Title	Date
Product Brief	MK01_Bluetooth_Module_Datasheet.pdf	2022-12-29

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