Bluetooth 5.1 Smart Device Module
User Manual
MB3021 Bluetooth 5.1 Smart Device Module
Module : MB3021
MB3021 is a fully integrated Bluetooth module. It is based on Qualcomm’s QCC3021 chip with specific interface design to meet Customer’s needs.
MB3021 is compatible with Bluetooth specification version 5.1. It integrates RF, Baseband controller, etc., a completed Bluetooth subsystem.
Module Specification
| Chips | QCC3021 |
| Bluetooth Spec | Bluetooth 5.1 |
| Frequency Band | 2402 ~ 2480 MHz |
| Tx Power | 2.51mW ~ 6.31mW (Bluetooth Power Class I) |
| Rx Sensitivity | < -70dBm (BER 0.1%) |
| Distance | < 100m (Open Space) |
| Power Voltage | 3.3V |
| Dimension | 20.0ⅹ33.0 ⅹ3.0 mm |
| Environmental Range | Operation temperature : -30 ~ +80℃ |
| Modulation | GFSK, π/4-DQPSK, 8DPSK |
| Communication Method | FHSS |
Block Diagram
Pin Define
| No | Pin Name | I/O | Reset State | Description |
| 1 | GND | I | GND CONNECTION FOR INTERNAL DIGITAL CIRCUITTRY AND PADS | |
| 2 | GND | I | GND CONNECTION FOR INTERNAL DIGITAL CIRCUITTRY AND PADS | |
| 3 | GND | I | GND CONNECTION FOR INTERNAL DIGITAL CIRCUITTRY AND PADS | |
| 4 | PIO[21] | I/O | Pull-down | GPIO |
| 5 | TEST | I | Pull-down | Must be connected to ground |
| 6 | I2S_SDIN | I/O | Pull-down | SYNCHRONOUS DATA INPUT , Alternative function PIO[19] |
| 7 | I2S_SDOUT | I/O | Pull-down | SYNCHRONOUS DATA OUTPUT, Alternative function PIO[18] |
| 8 | I2S_WS | I/O | Pull-down | SYNCHRONOUS DATA SYNC , Alternative function PIO[17] |
| 9 | I2S_SCLK | I/O | Pull-down | SYNCHRONOUS DATA CLOCK, Alternative function PIO[16] |
| 10 | PIO[15] | I/O | Pull-down | Alternative function MCLK_OUT |
| 11 | USB_DN | I/O | USB DATA MINUS | |
| 12 | USB_DP | I/O | USB DATA PLUS | |
| 13 | 1V8_SMPS | O | 1.8V REGULATOR OUTPUT | |
| 14 | VCHG_SENSE | I | CHARGER INPUT SENSE PIN | |
| 15 | CHG_EXT | I | EXTERNAL BATTERY CHARGER CONTROL | |
| 16 | VBAT_SENSE | I | BATTERY CHARGER SENSE INPUT | |
| 17 | 3V3_OUT | O | ALTERMATIVE SUPPLY VIA BYPASS REGULATOR FOR 1.8V AND 1.35V REGULATOR INPUTS. MUSET BE THE SAME POTENTIAL AS VBAT. | |
| 18 | GND | I | GND CONNECTION FOR INTERNAL DIGITAL CIRCUITTRY AND PADS | |
| 19 | LED[0] | O | General-purpose analog/digital input or open drain LED output. | |
| 20 | LED[1] | O | General-purpose analog/digital input or open drain LED output. | |
| 21 | LED[2] | O | General-purpose analog/digital input or open drain LED output. | |
| 22 | SYS_CTRL | I | Pull-down | REGULATOR ENABLE INPUT |
| 23 | VBAT | I | BATTERY POSITIVE TERMINAL | |
| 24 | VBUS | I | BATTERY CHARGER INPUT | |
| 25 | VDD_PADS | I | 1.7~3.6V SUPPLY INPUT FOR IO PORTS |
| 26 | LED[5] | O | General-purpose analog/digital input or open drain LED output. | |
| 27 | NRESET | I | Pull-up | RESET IF LOW (>5ms) |
| 28 | UART_TX | O | Pull-down | UART DATA OUT, Alternative function PIO[22] |
| 29 | UART_RX | I | Pull-down | UART DATA IN, Alternative function PIO[23] |
| 30 | GND | I | GND CONNECTION FOR INTERNAL DIGITAL CIRCUITTRY AND PADS | |
| 31 | PIO[4] | I/O | PIO[4], Alternative function UART Request to Send | |
| 32 | PIO[3] | I/O | PIO[3], Alternative function UART Clear to Send | |
| 33 | PIO[6] | I/O | GPIO, Alternative function TBR_MOSI[0] | |
| 34 | PIO[7] | I/O | Pull-up | GPIO, Alternative function TBR_MISO[0] |
| 35 | PIO[8] | I/O | Pull-down | GPIO, Alternative function TBR_CLK |
| 36 | PIO[5] | I/O | Pull-down | GPIO |
| 37 | PIO[2] | I/O | Pull-down | GPIO |
| 38 | AOUT_RP | O | SPEAKER OUTPUT POSITIVE RIGHT | |
| 39 | AOUT_RN | O | SPEAKER OUTPUT NEGATIVE RIGHT | |
| 40 | AOUT_LN | O | SPEAKER OUTPUT NEGATIVE LEFT | |
| 41 | AOUT_LP | O | SPEAKER OUTPUT POSITIVE LEFT | |
| 42 | GND | I | GND CONNECTION FOR INTERNAL DIGITAL CIRCUITTRY AND PADS | |
| 43 | MIC_BIAS | O | MIC BIAS OUTPUT | |
| 44 | MIC_LN | I | MIC INPUT NEGATIVE LEFT | |
| 45 | MIC_LP | I | MIC INPUT POSITIVIE LEFT | |
| 46 | MIC_RN | I | MIC INPUT NEGATIVE RIGHT | |
| 47 | MIC_RP | I | MIC INPUT POSITIVIE RIGHT | |
| 48 | GND | I | GND CONNECTION FOR INTERNAL DIGITAL CIRCUITTRY AND PADS |
Mechanical Dimension
TOP VIEW
| Mark | Dimension | Mark | Dimension | Mark | Dimension | Mark | Dimension |
| A | 33.0±0.3 | D | 3.4±0.3 | G | 0.8±0.15 | J | 10.2±0.3 |
| B | 20.0±0.3 | E | 13.2±0.3 | H | 0.4±0.15 | K | 1.0±0.3 |
| C | 20.4±0.3 | F | 2.4±0.3 | I | 1.2±0.15 | L | 3.0±0.3 |
Module PCB coplanarity measured from seating plane ≤ 0.1 mm
Electrical Characteristics
Conditions: VDD = 3.3V, Ta = 25 ℃, unless otherwise noted.
Absolute Maximum Ratings
| Parameter | Min | Max | Unit |
| Power Supply Voltage : VBAT | -0.4V | 4.8V | DCV |
| Power Supply Voltage : VBUS | -0.4V | 7.0V | DCV |
| Power Supply Voltage : VDD PADS | -0.4V | 3.8V | DCV |
| Storage Temperature | -40 | 85 | ℃ |
Recommended Operating Conditions
| Parameter | Min | Max | Unit |
| Power Supply Voltage : VBAT | 3.0V | 4.6V | DCV |
| Power Supply Voltage : VBUS | 4.75V | 5.5V | DCV |
| Power Supply Voltage : VDD PADS | 3.0V | 3.6V | DCV |
| Operation Temperature | -30 | 80 | ℃ |
Current consumption
| Parameter | Connection Type | Avg | Peak | Unit |
| Page scan, Time interval = 1.28s | – | <1 | 1 | mA |
| Inquiry and Page scan, Time interval = 1.28s | – | <1 | 1 | mA |
| ACL No data transfer | Master | 1.5 | 2 | mA |
| ACL data transfer | Master | 17 | 43 | mA |
Input/Output Characteristics
| Parameter | Min | Max | Unit |
| VIL Input Voltage Low | -0.4 | 0.8 | V |
| VIH Input Voltage High | 0.7*VDD | VDD+0.4 | V |
| VOL Output Voltage Low | – | 0.2 | V |
| VOH Output Voltage High | VDD-0.2 | – | V |
| General Performance | |||||
| Parameter | Condition | Min | Typ | Max | Unit |
| Frequency Range | Normal | 2402 | – | 2480 | MHz |
| Transmitter Performance | |||||
| Parameter | Condition | Min | Avg | Max | Unit |
| Transmit Power | Normal | 4 | – | 10 | dBm |
| Parameter | Condition | Min | Typ | Max | Unit |
| Power density | Normal | – | – | <20 | dBm |
| 20dB bandwidth | Normal | 1000 | KHz | ||
| Adjacent channel power (F0 = 2441MHz) | F=F0 ±2MHz | – | – | -20 | dBm |
| F=F0 ±3MHz | – | – | -40 | dBm | |
| F=F0 ±4MHz | – | – | -40 | dBm | |
| Out-band Spurious Emission | 30MHz ~ 1GHz | – | – | -36 | dBm |
| 1GHz ~ 12.75GHz | – | – | -30 | dBm | |
| 1.8GHz ~ 1.9GHz | – | – | -47 | dBm | |
| 5.1GHz ~ 5.3GHz | – | – | -47 | dBm | |
| Modulation Characteristic | ∆F1avg | 140 | – | 175 | KHz |
| ∆F2max | 115 | – | – | KHz | |
| ∆F2avg / ∆F1avg | 80 | – | – | % | |
| Initial Carrier Frequency Tolerance | DH1 packet | -75 | – | 75 | KHz |
| Carrier Frequency Drift | DH5 packet | -25 | 25 | KHz | |
| Receiver Performance | |||||
| Parameter | Condition | Min | Type | Max | Unit |
| Sensitivity at 0.1% BER | Single slot (DH1 packet) | – | – | -70 | dBm |
| Sensitivity at 0.1% BER | Multi slot (DH5 packet) | – | – | -70 | dBm |
| Maximum received signal at 0.1% BER | -20 | – | – | dBm | |
| Maximum level of intermodulation interferers | f1-f2 = 5 MHz, Pwanted= -64 dBm | -39 | – | – | dBm |
Regulatory Statement (FCC)
- Part 15.19 Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation. - Part 15.105 Statement (Class B)
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 generates, 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 measures:- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
- Part 15.21 Statement
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment. This device must not be co-located or operating in conjunction with any other antenna or transmitter. - Responsible Party Information (Supplier’s Declaration of Conformity)
LG Electronics USA
1000 Sylvan Avenue Englewood Cliffs
New Jersey, United States, 07632
Regulatory notice to host manufacturer according to KDB 996369 D03 OEM Manual v01
List of applicable FCC rules
This module has been granted modular approval as below listed FCC rule parts.
- FCC Rule parts 15C(15.247)
Summarize the specific operational use conditions
The OEM integrator should use equivalent antennas which is the same type and equal or less gain then an antenna listed in this instruction manual.
RF exposure considerations
The module has been certified for integration into products only by OEM integrators under the following condition:
- The antenna(s) must be installed such that a minimum separation distance of at least 20 cm is maintained between the radiator (antenna) and all persons at all times.
- The transmitter module must not be co-located or operating in conjunction with any other antenna or transmitter except in accordance with FCC multi-transmitter product procedures.
- Mobile use
As long as the three conditions above are met, further transmitter testing will not be required.
OEM integrators should provide the minimum separation distance to end users in their end-product manuals.
- Antennas list
This module is certified with the following integrated antenna.- Type: PCB Trace Antenna
- Max. peak Antenna gain
BT Ant: 2.90 dBi (2402 – 2480 MHz)
Any new antenna type, higher gain than listed antenna should be met the requirements of FCC rule 15.203 and 2.1043 as permissive change procedure.
- Label and compliance information
- End Product Labeling
The module is labeled with its own FCC ID and IC Certification Number. If the FCC ID and IC Certification Number are not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. In that case, the final end product must be labeled in a visible area with the following:
• Contains FCC ID: BEJ-MB3021
• BEContains IC: 2703H-MB3021 - Information on test modes and additional testing requirements
OEM integrator is still responsible for testing their end-product for any additional
compliance requirements required with this module installed (for example, digital device
emissions, PC peripheral requirements, additional transmitter in the host, etc.). - Additional testing, Part 15 Subpart B disclaimer
The final host product also requires Part 15 subpart B compliance testing with the modular transmitter installed to be properly authorized for operation as a Part 15 digital device.
RSS-GEN, Sec. 7.1.3–(licence-exempt radio apparatus)
This device complies with Industry Canada licence-exempt RSS standard(s). Operation
is subject to the following two conditions:
- this device may not cause interference, and
- this device must accept any interference, including interference that may cause undesired operation of the device.
CE Statement
RF Exposure
The antenna (or antennas) must be installed so as to maintain at all times a distance minimum of at least 20 cm between the radiation source (antenna) and any individual.
This device may not be installed or used in conjunction with any other antenna or transmitter
Simplified Declaration of Conformity (CE / UK)
Hereby, LG Electronics declares that hat MB3021 is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address: http://www.lg.com/global/support/cedoc/cedoc#
Hereby, [LG Electronics Inc.]. declares that MB3021 is in compliance with the Radio Equipment Regulations 2017. The full text of the UK declaration of conformity is available at the following internet address: http://www.lg.com/global/support/cedoc/
cedoc#
This restriction will be applied in all member states.
The postal address: LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands
UK Importer: LG Electronics U.K. Ltd
The postal Address: Velocity 2, Brooklands Drive, Weybridge, KT13 0SL
Documents / Resources
 | LG MB3021 Bluetooth 5.1 Smart Device Module [pdf] User Manual MB3021, BEJ-MB3021, BEJMB3021, MB3021 Bluetooth 5.1 Smart Device Module, Bluetooth 5.1 Smart Device Module, Smart Device Module, Device Module, Module |
