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.
MK01A
MK01A integrates a high-performance ceramic chip antenna.
MK01B
MK01B uses a u.FL connector and requires an external antenna.
| 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 |
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.
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