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MiraOne Radio Module

MiraOne module


Module seen from the top

MiraOne Radio Module Pinout

Pin Name Pin type Description
1 NC Do not connect
2 NC Do not connect
3 NC Do not connect
4 NC Do not connect
5 PC7 Digital I/O GPIO0 / UART1 RXD (command UART)
6 PC6 Digital I/O GPIO1 / UART1 TXD (command UART)
7 PC5 Digital I/O GPIO2 / I2C SDA
8 PC4 Digital I/O GPIO3 / I2C SCA
9 PC3 Digital I/O GPIO41
10 PC2 Digital I/O GPIO52
11 PC1 Digital I/O GPIO62
12 PA0 Digital I/O / Analog I GPIO7 / UART0 RXD (debug UART) / ADC0
13 PA1 Digital I/O / Analog I GPIO8 / UART0 TXD (debug UART) / ADC1
14 PA2 Digital I/O SPI CLK3
15 PA3 Digital I/O GPIO94
16 PA4 Digital I/O SPI MOSI3
17 PA5 Digital I/O SPI MISO3
18 PA6 Digital I/O / Analog I GPIO9 / ADC2
19 PA7 Digital I/O / Analog I GPIO10 / ADC3
20 GND Power Supply ground
21 GND Power Supply ground
22 PB5 Digital I/O GPIO11 / PWM1
23 PB4 Digital I/O GPIO12 / PWM2
24 PB3 Digital I/O GPIO13 / GPT A Trig
25 PB2 Digital I/O GPIO14 / Wake-up
26 PB1 Digital I/O GPIO15
27 nRESET Digital input Device reset
28 USB_N USB I/O USB data negative (D-)
29 USB_P USB I/O USB data negative (D+)
30 GND Power Supply ground
31 VCC Power Power supply, 2.3-3.6 VDC

1 High current pin, 20 mA sink/source capability. This pin is used as commissioning LED in Mira Commissioning Application.
2 High current pin, 20 mA sink/source capability.
3 SPI signals may not be used as GPIOs, SPI is used internally on the Mira module.
4 This pin must be high at power-up. If this pin is used, care must be taken to make sure this pin is high during power-up.


Operating conditions

Parameter Symbol Minimum Maximum Unit
Operating supply voltage VCC 2.3 3.6 V
Operating ambient temp. TA -40 80 °C

Absolute maximum ratings

Parameter Symbol Minimum Maximum Unit
Supply voltage VCC -0.3 3.6 V
Peak current IMAX 250mA mA
Voltage on any digital pin VIO -0.3 VCC+0.3 V
Storage temperature TSTG -40 125 °C
Input RF level PIN 10 dBm
Electrostatic discharge voltage (human body model), JEDEC STD 22, method A114 VESD 1 kV

Electrical characteristics

Parameter Symbol Min Typ Max Unit
Peak current consumption, continuous transmission @ 17dBm, no peripherals active ITX_PEAK_17DBM 120 150 mA
Peak current consumption, continuous transmission @ -2.7dBm, no peripherals active ITX_PEAK_NEG2_7DBM 60 80 mA
Peak current consumption, battery mode @ 2.5dBm, no peripherals active ITX_PEAK_2_5DBM 60 80 mA
Peak current consumption in RX mode, -50dBm input, no peripherals active IRX 40 60 mA
Peak current consumption in RX battery mode, -50dBm input, no peripherals active IRX_BATT 35 55 mA
Average current consumption, high power mode, 17dBm TX, no peripherals active ITX_AVG 45 50 mA
Average current consumption1, battery mode, 2.5dBm TX, no peripherals active ITX_AVG_BATT 35 40 mA
SPI current consumption ISPI 300 μA
I2C current consumption II2C 100 μA
UART current consumption IUART 700 μA
USB current consumption IUSB 3.8 mA
ADC current consumption when converting IADC 1.2 mA
Flash erase current consumption IFL_ER 12 mA
Flash write peak current IFL_WR 8 mA
Deep sleep current consumption ISLEEP 10.5 11 μA
Logic 0 input voltage threshold VLOW_TH 0.5 V
Logic 1 input voltage threshold VHI_TH 2.5 V
Logic 0/1 input current IIN_IO -300 300 nA

1 One burst transmission including CSMA-CA, TX, MAC ACK, duration 4.9ms

ADC characteristics

TA = 25°C and VCC = 3.3V

Parameter Min Typ Max Unit
Input voltage 0 VCC V
Input resistance 197
ENOB Effective number of bits 10.2 bits
Useful bandwidth 20 kHz
THD Total harmonic distortion -75.2 dB
Signal to non-harmonic ratio 78.8 dB
CMRR Common-mode rejection ratio 84 dB
Crosstalk -84 dB
Offset -3 mV
Gain error 0.68 %
DNL Differential nonlinearity Mean 0.05 LSB
Maximum 0.9 LSB
INL Integral nonlinearity Mean 4.6 LSB
Maximim 13.3 LSB
SINAD (-THD+N) Signal-to-noise-and-distortion Single-ended 66.6 dB
Differential 70.8 dB
Conversion time 132 μs
Internal reference temperature coefficient 0.4 mV/10°C

USB DC characteristics

TA = 25°C and VCC = 3.6V

Parameter Min Typ Max Unit
USB pad voltage output, high, 4mA load 3.4 V
USB pad voltage output, low, 4mA load 0.2 V

RF characteristics

Measured at 3.3V, 25°C. Limits apply over entire frequency range 2405-2480 MHz (channel 11-26).

Parameter Symbol Min Typ Max Unit
RF frequency range 2405 2480 MHz
Receiver sensitivity, PER = 1% RXSENS -101 dBm
Receiver sensitivity battery mode, PER = 1% RXSENS_BATT -92 dBm
Receiver saturation, PER = 1% RXSAT -5 dBm
Transmitter max output power POUT_MAX 16.5 17 17.5 dBm
Output return loss at U.FL connector S22 -10 -5 dB


MiraOne Radio Module Mechanical

Compliance information

FCC information

FCC Information to User

This product does not contain any user serviceable components and is to be used with approved antennas only. Any product changes or modifications will invalidate all applicable regulatory certifications and approvals

FCC Guidelines for Human Exposure

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance of 20 cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

FCC Declaration of Conformity

We LumenRadio AB, Svangatan 2B, 41668 Gothenburg, Sweden, declare under our sole responsibility that MiraOne comply with Part 15 of FCC Rules. Operation is subject to the following two conditions:

  • This device may not cause harmful interference, and

  • This device must accept any interference received, including interference that may cause undesired operation.

FCC Radio Frequency Interference Warnings & Instructions

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following methods:

  • Reorient or relocate the receiving antenna

  • Increase the separation between the equipment and the receiver

  • Connect the equipment into an electrical outlet on a circuit different from that which the radio receiver is connected

  • Consult the dealer or an experienced radio/TV technician for help.

Modifications made to the product, unless expressly approved by LumenRadio AB, could void the user’s right to operate the equipment.

Industry Canada statement

This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.

Le resent appareil numerique német pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la classe B prescrites dans le Réglement sur le broullage radioélectrique édicté par le ministére des Communications du Canada.


MiraOne comply with the Essential Requirements of RED (Radio Equipment Directive) of the European Union (2014/53/EU). MiraOne meet the ETSI EN 300 328 V1.8.1, ETSI EN 300 328 V1.9.1 and ETSI EN 300 328 V2.1.1 conformance standards for radio performance.

Compliance Marking

FCC & Industry Canada

The MiraOne modules are certified for FCC as a single-modular transmitter.

MiraOne modules are FCC certified radio module that carries a “Modular” grant. MiraOne radio modules complies to the “Intentional Radiator” portion (Part 15c) for FCC certification: Part 15.247 Transmitter tests.

An end product, incorporating a MiraOne module, does not require additional testing or authorization for the MiraOne transceiver. Host end products can use the FCC ID of the certified module as the FCC ID of the host end product. A label displaying the MiraOne module’s FCC ID must be affixed and visible on the host end product for approval.

FCC IDs are required for host end products with radio transmitters.

Other Compliances

For other local compliance regulations (CE, UL, CSA, SRRC, C-Tick, etc.) you are responsible as the product manufacturer to ensure all required compliance testing is completed. LumenRadio are happy to advise on compliance testing – please contact LumenRadio for details.