1 Product Introduction
MKL62BA is a compact, low- power and LoRaWAN®-Based module. The module integrates with Semtech LoRa SX1262 and Nordic BLE nRF52832 chip that has a 32-bit ARM Coretex-M4 and and 512 kB flash/64 kB RAM memory.
The module supports a variety of digital interfaces,such as SPI,UART,I2C,GPIO,ADC,NFC and so on. The module can be used to collect sensor data when the sensor is physically connected to these digital interfaces，and the data will be transmitted to a remote LoRaWAN gateway,then transmitted to a server. The BLE also can be used to establish a connection with BLE terminal equipment to interactive data in short distance, such as update firmware over the air by smartphone.
2 Application
- Automated meter reading
- Industrial monitoring and control
- Agriculture and enviroment monitoring
- Asset and personnel positioning
3 Product Feature
- Based on LoRaWAN®-Based and BLE Protocol
- Built-in TCXO for improve high frequency stability and can be used for harsh environment in outdoor application
- Firmware update Over The Air (OTA)
- Support for AT command configuring
- Built-in BLE ceramic antenna and IPEX connector for outside antenna
- Support NFC function
- Low cost and low power consumption
4 Technical Parameter
| Type | Parameter |
|---|
| MCU |
Nordic nRF52832 ARM Coretex-M4+ 32-bit |
| Memory |
512 kB flash/64 kB RAM |
| Transceiver |
Semtech SX1262 |
| Frequency |
EU868/US915/AU915/AS923/IN865 |
| TX Power |
Max 21 dBm@EU868
Max 21 dBm@US915 |
| RX Sensitivity |
-137dBm@SF12 |
| Power Supply |
3.3V |
| TX Current(LoRa+BLE) |
Max 120mA |
| RX Current(LoRa+BLE) |
6.4mA |
| Sleep current |
7uA |
| Interface |
UART,GPIO,ADC,I2C,SPI,NFC |
| BLE Antenna |
On-board ceramic antenna |
| LoRa Antenna |
IPEX connector for external antenna |
| Dimension |
24mm x 19mm x 3mm |
| Package |
33 Pins, SMT |
| Working Temperature |
-40~85 ℃ |
5 Hardware Specifications
5.1 Block Diagram and Pin-out
Figure 1: Functional block diagram for MKL62BA modules
Figure 2: MKL62BA module pin-out (top view)
5.2 Pin Definitions
| Pin NO. | Pin Name | Type | Comment |
|---|
| 1 |
GND |
- |
GND |
| 2 |
LED1 |
I/O |
P0.25 I/O |
| 3 |
LED2 |
I/O |
P0.26 I/O |
| 4 |
GPIO0 |
I/O |
P0.27 I/O |
| 5 |
GPIO1 |
I/O |
P0.28 I/O I |
| 6 |
UART_CTS |
I/O |
P0.29 I/O I |
| 7 |
UART_RTS |
I/O |
P0.30 I/O I |
| 8 |
UART_TX |
I/O |
P0.31 I/O I |
| 9 |
UART_RX |
I/O |
P0.02 I/O I |
| 10 |
GPIO2 |
I/O |
P0.03 I/O I |
| 11 |
GPIO3 |
I/O |
P0.04 I/O I |
| 12 |
ADC |
I/O |
P0.05 I/O I |
| 13 |
VCC |
- |
VCC 3.3V |
| 14 |
GND |
- |
GND |
| 15 |
GND |
- |
GND |
| 16 |
RESET |
I |
P0.06 I/O ,MCU reset trigger input |
| 17 |
I2C_SDA |
I/O |
P0.07 I/O |
| 18 |
I2C_SCL |
I/O |
P0.08 I/O |
| 19 |
NFC1 |
|
NFC |
| 20 |
NFC2 |
|
NFC |
| 21 |
SPI_CS |
I/O |
P0.15 I/O |
| 22 |
SPI_MISO |
I/O |
P0.18 I/O |
| 23 |
SPI_MOSI |
I/O |
P0.20 I/O |
| 24 |
SPI_CLK |
I/O |
P0.22 I/O |
| 25 |
SWDIO |
I/O |
Used for download |
| 26 |
SWDCLK |
I/O |
Used for download |
| 27 |
GND |
- |
GND |
| 28 |
GND |
- |
GND |
| 29 |
GND |
- |
GND |
| 30 |
RF2 |
|
Reserved exteral LoRa antenna |
| 31 |
GND |
- |
GND |
| 32 |
GND |
- |
GND |
| 33 |
RF1 |
|
Reserved exteral BLE antenna |
| 34 |
GND |
- |
GND |
6 Mechanical Details
6.1 MKL62BA Mechanical Details
Usefull Link:
MKL62BA AT Command Specification
MKL62ST-DT User Manual
