BroadLink BL3394-P Embedded WiFi BT Module User Manual

World’s leading smart home solution provider
Embedded
WiFi/BT Module
BL3394-P/EL3394-P
Product
Version：1.4
Release date：8/10/2023

Features

• Cortex-M33+Cortex-M23 dual core
• 512KBSRAM/4MBpSRAM
• External 4MB FLASH
• Support AES/DES/SHA1
• Support XIP
• Working voltage: DC3.3V
• Support BLE5.0
• Wi-Fi related features
  • Support 802.11 b/g/n standards
  • Support station and softAP
  • Support SmartConfig and AP configuration
  • Support WEP/WPA2
  • Support multiple cloud services
  • Integrated balun/PA/LNA
  • TCP/IP stack optimized for IoT application
  • PCB antenna
• Peripherals:
  • 2xUART
  • 9xGPIOs
• Working temperature: 0℃to +85℃
• Stamp-style package for SMT soldering

Applications

• Smart transportation
• Smart home / appliances
• Instruments
• Health care
• Industrial automation
• Intelligent security
• Smart energy

Model

Overview

BL3394-P/EL3394-P is an embedded Wi-Fi module designed by BroadLink, highly integrated with Cortex-M33+Cortex-M23 dual core MCU with 512KB SRAM + 4MB pSRAM, 4MB external flash, with 3.3V power supply.
The module integrates radio transceiver, MAC, baseband, all Wi-Fi protocols, configurations, and network stack. It can be widely used in applications like smart home devices, remote monitoring devices and medical care instruments.

Basic Specifications

2.1. Power Consumption
Please refer to Table 1 for power consumption data.
Table 1 – Power Consumption Data

Specifications

| Min.| Typ.| Max.|

Units

---|---|---|---|---
VDD| 3.0| 3.3| 3.6| V
VIL (input low voltage)| | | 0.3VCC| V
VIH (input high voltage)| 0.7VCC| | 3.6| V
VOL (output low voltage)| | | 0.4| V
VOH (output high voltage)| 2.4| | 3.6| V
RX| | 60| | mA
pulse current @TX
11b @17.5dBm 11Mbps| | 310| | mA
pulse current @TX
11g @16.5dBm 54Mbps| | 295| | mA
pulse current @TX
11n @16dBm HT20 MCS7| | 288| | mA
pulse current @TX
11n @15dBm HT40 MCS7| | 270| | mA
pulse current @BLE @6dBm| | 155| | mA

2.2. Working Environment
Please refer to Table 2 for working environment data.
Table 2 – Working Environment Data

Symbol

| Description| Min.| Max.|

Units

---|---|---|---|---
Ts| Storage temperature| -40| 125| ℃
TA| Ambient operating temperature| 0| 85| ℃
Vdd| Supply voltage| 3.0| 3.6| V
Vio| Voltage on IO pin| 0| 3.6| V

Radio Specifications

3.1. Basic Radio Specification
Please refer to Table 3 for radio specification.
Table 3 – Radio Specification

| CE|

FCC/IC

---|---|---
Radio range| 2.402 GHz – 2.480 GHz| 2.402 GHz – 2.480 GHz
Wireless standards| IEEE 802.11 b/g/n| IEEE 802.11 b/g/n
Radio output (conductive)| 802.11b:17±1.5dBm@11Mbps| 802.11b:15.5±1.5dBm@11Mbps
802.11g:16±1.5dBm@54Mbps| 802.11g:14.5±1.5dBm@54Mbps
802.11n:15.5±1.5dBm@MCS7/HT20| 802.11n:13.5±1.5dBm@MCS7/HT20
802.11n:15.5±1.5dBm@MCS7/HT40| 802.11n:12.5±1.5dBm@MCS7/HT40
BLE:6±2dBm| BLE:4±2dBm

Antenna type

| Internal: PCB antenna| Internal: PCB antenna
External: Not supported| External: Not supported
Receiving sensitivity| 802.11b≦-90dBm@11Mbps| 802.11b≦-90dBm@11Mbps
802.11g≦-76dBm@54Mbps| 802.11g≦-76dBm@54Mbps
802.11n/HT20≦-73dBm@MCS7| 802.11n/HT20≦-73dBm@MCS7
802.11n/HT40≦-70dBm@MCS7| 802.11n/HT40≦-70dBm@MCS7
BLE ≦- 98dBm| BLE ≦- 98dBm
Data rate (max)| 11M@802.11b, 54M@802.11g,MCS7@802.11n| 11M@802.11b, 54M@802.11g,MCS7@802.11n
Security| Encryption standard: Open/WPA/WPA2| Encryption standard:Open/WPA/WPA2
Network types| STA/AP| STA/AP

3.2. Radio Performance
3.2.1. IEEE802.11b
Table 4 – Basic specifications under IEEE802.11b

ITEM

| Specification CE|

Specification FCC/IC

---|---|---
Modulation Type| DSSS / CCK| DSSS / CCK
Frequency range| 2412MHz~2472MHz| 2412MHz~2462MHz
Channel| CH1 to CH13| CH1 to CH11
Data rate| 1, 2, 5.5, 11Mbps| 1, 2, 5.5, 11Mbps

Table 5 – Transmitting performance under IEEE802.11b

TX Characteristics

| Min.| Typical| Max.|

Unit

---|---|---|---|---
Power@11Mbps| 16| | 19| dBm
Frequency Error| -15| | +15| ppm
EVM@11Mbps| | | -14| dB
Transmit spectrum mask
Pass

Table 6 – Receiving performance under IEEE802.11b

RX Characteristics

| .Min| Typical| Max.|

Unit

---|---|---|---|---
11Mbps Input Level Sensitivity
Minimum Input Level (FER≦ 8%)| | | -90| dBm

3.2.2. IEEE 802.11g
Table 7 – Basic specifications under IEEE802.11g 

ITEM

| Specification CE|

Specification FCC/IC

---|---|---
Modulation Type| OFDM| OFDM
Frequency range| 2412MHz~2472MHz| 2412MHz~2462MHz
Channel| CH1 to CH13| CH1 to CH11
Data rate| 6, 9, 12, 18, 24, 36, 48, 54Mbps| 6, 9, 12, 18, 24, 36, 48, 54Mbps

Table 8 – Transmitting performance under IEEE802.11g

TX Characteristics

| Min.| Typical| Max.|

Uni t

---|---|---|---|---
Power@54Mbps| 15| | 18| dBm
Frequency Error| -15| | +15| ppm
EVM@54Mbps| | | -30| dB
Transmit spectrum mask
Pass

Table 9 – Receiving performance under IEEE802.11g

RX Characteristics

|

Min

| Typical| Max.|

Unit

---|---|---|---|---
54Mbps Input Level Sensitivity
Minimum Input Level (FER≦ 10%)| | | -76| dBm

3.2.3 IEEE802.11n
IEEE802.11n 20MHz bandwidth mode
Table 10 – Basic specifications under IEEE802.11n with 20MHz

ITEM

|

Specification CE

|

Specification FCC/IC

---|---|---
Modulation Type| OFDM| OFDM
Frequency range| 2412MHz~2472MHz| 2412MHz~2462MHz
Channel| CH1 to CH13| CH1 to CH11
Data rate| MCS0/1/2/3/4/5/6/7| MCS0/1/2/3/4/5/6/7

Table 11 – Transmitting performance under IEEE802.11n with 20MHz

TX Characteristics

| Min.| Typical| Max.|

Unit

---|---|---|---|---
Power@HT20, MCS7| 14.5| | 17.5| dBm
Frequency Error| -15| | +15| ppm
EVM@HT20, MCS7| | | -30| dB
Transmit spectrum mask
Pass

Table 12 – Receiving performance under IEEE802.11n with 20MHz

MCS7 Input Level Sensitivity
Minimum Input Level (FER≦ 10%)| | | -73| dBm

IEEE802.11n 40MHz bandwidth mode
Table 13 – Basic specifications under IEEE802.11n with 40MHz

Table 14 – Transmitting performance under IEEE802.11n with 40MHz

Transmit spectrum mask
Pass

Table 15 – Receiving performance under IEEE802.11n with 40MHz

MCS7 Input Level Sensitivity
Minimum Input Level (FER≦ 10%)| | | -70| dBm

BL3394-P Hardware Information

4.1. PIN Sequence
Please refer to Fig 1 for the pin sequence. 4.2. PIN Definitions
Please refer to Table 13 for pin definitions.

PIN

| Function 1| Function 2|

Function 3

---|---|---|---
1| GDN| |
2| VDD| |
3| RST| |
4| PA18| HS_UART0_TX|
5| PA19| HS_UART0_RX|
6| PA7| LOG_TX|
7| PA8| LOG_RX|
8| PB22| | HS_PWM14
9| PB23| | HS_PWM15
10| PB26| |
11| PB29| |
12| PB31| |
13| VDD| |
14| GND| |
15| PB2| LP_UART_RX|
16| PB1| LP_UART_TX|
17| PA26| | HS_PWM5
18| PA25| | HS_PWM4

Table 16 – Pin Definitions

1. In default, HS_UART0 (pin4 and pin5) are used for transparent communication and UART_LOG (pin6 and pin7) is used for output of debugging information and burning firmware. Please refer to the description in DC Characteristics for UART output current level.
2. RST is the reset pin and will be effective with VIL. Configuration information will be remained after module reset. The module has pull-up process for RST designed internally.
3. The pins for reset button and LED indication should be defined according to actual firmware and circuit.
4. Pulling down PA7 will switch the module to firmware programming mode.

4.3 Recommendations
The following precautions should be considered during PCB designing:
Do not place any electrical components or grounding in antenna area on main board and it’s better to leave this area blank on PCB.
It is recommended to not place any electrical components within 10mm range of module antenna and not design any circuit or bond copper on main board under this area.
Do not use the module inside any metal case or containers with metal painting.
Keep the antenna of Wi-Fi module next to the edge of main board (as shown in Fig 5) during design of PCB to ensure better performance of antenna. 4.4. Mechanical Dimensions
Please refer to Fig 3 for the dimensions of module. Note: Dimensions (17.7±0.2) mm (30±0.2) mm (3.6± 10%) mm (with shielding case)
4.5. Recommended Pad Size
Please refer to Fig 4 for the recommended pad size 4.6. Certifications

1. Certified for SRRC standard
2. Compliant with requirement of RoHS 2.0.
3. Compliant with requirement of REACH.

4.7. Mechanical Dimensions
Please refer to Fig 6 for the dimensions of shielding case.(Unit: mm)
4.8. Packaging
Please refer to Fig 7 and Fig 8 for the details of packaging. Is packed in reel with 850 pcs/reel.

Reference Design

5.1. UART Interface Design
For devices with 3.3V power supply, you can directly connect the device UART port with module
UART port according to the illustration in Fig 12. If your device is powered by 5V, you can refer to the circuit shown in Fig 10 or design your own circuit for power conversion. The value of resistor can be adjusted according to actual circuit design. 5.2. Power Supply Requirement
If an LDO is used to supply the module with 3.3V power, C1 capacitor can be used with 10uF-22uF;
If a DCDC is used to supply 3.3V power, C1 capacitor can be used with 22uF.
Please ensure that the power supply can provide a sufficiently large current.
During the DPD phase, the module will experience consecutive pulses with a duration of approximately 50us. It is recommended that the power supply be capable of providing a pulse current of at least 800mA.
During the normal operation of the module in the data transmission phase, the power supply should be able to sustain a current of at least 500mA.
The module is designed with 2x 3.3V pins. You can power the module with either pin or both pins.
CE Warning
Caution:
Use the Product in the environment with the temperature Between 0℃ and 85℃; Otherwise, it may damage your product. Products can only be used below 2000m altitude
For the following equipment:
Product Name: WiFi/BT Module
Brand Name: —
Model No.: BL3394-P, EL3394-P
Hangzhou BroadLink Technology Co., Ltd.
E-mail: mengjiao.yan@broadlink.com.cn 
Hereby declares that this [Name: WiFi/BT Module, Model: BL3394-P, EL3394-P] is in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU.
This product is intended for sale and application in a business environment.
RED Article 10 2
-This product can be used across EU member states
RED Article 10 10
-The product is class 1 product, No restrictions
The RF distance between body and product is 20cm
Wi-Fi
Support Standards: 802.11b, 802.11g, 802.11n-HT20/40
Frequency Range: 2412-2472MHz for 802.11b/g/n (HT20); 2422-2462MHz for 802.11n (HT40)
Max.RF Output Power: 18.15dBm (EIRP)
Bluetooth
Bluetooth Version: Bluetooth V5.0 (BLE Mode)
Frequency Range: 2402-2480MHz
Max.RF Output Power: 1Mbps: 7.61dBm (EIRP); 2Mbps: 7.68dBm (EIRP)

FCC Warning
List of applicable FCC rules
FCC Part 15.247
Label and compliance information
FCC ID label on the final system must be labeled with “Contains FCC ID:
2ATEV-3394-P” or “Contains transmitter module FCC ID: 2ATEV-3394-P”.
Information on test modes and additional testing requirements
Contact Hangzhou BroadLink Technology Co., Ltd. will provide stand-alone modular transmitter test mode. Additional testing and certification may be necessary when multiple modules are used in a host.
Additional testing, Part 15 Subpart B disclaimer
To ensure compliance with all non-transmitter functions the host manufacturer is responsible for ensuring compliance with the module(s) installed and fully operational. For example, if a host was previously authorized as an unintentional radiator under the Supplier’s Declaration of Conformity procedure without a transmitter certified module and a module is added, the host manufacturer is responsible for ensuring that the after the module is installed and operational the host continues to be compliant with the Part 15B unintentional radiator requirements. Since this may depend on the details of how the module is integrated with the host, Hangzhou BroadLink Technology Co., Ltd. shall provide guidance to the host manufacturer for compliance with the Part 15B requirements.
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.

NOTE 1: Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. End users must follow the specific operating instructions for satisfying RF exposure compliance.
Note 1: This module certified that complies with RF exposure requirement under mobile or fixed condition, this module is to be installed only in mobile or fixed applications.
A mobile device is defined as a transmitting device designed to be used in other than fixed locations and to generally be used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitter’s radiating structure(s) and the body of the user or nearby persons. Transmitting devices designed to be used by consumers or workers that can be easily re-located, such as wireless devices associated with a personal computer, are considered to be mobile devices if they meet the 20 centimeter separation requirement.
A fixed device is defined as a device is physically secured at one location and is not able to be easily moved to another location.
Note 2: Any modifications made to the module will void the Grant of Certification, this module is limited to OEM installation only and must not be sold to end-users, end-user has no manual instructions to remove or install the device, only software or operating procedure shall be placed  in the end- user operating manual of final products.
Note 3 : The module may be operated only with the antenna with which it is authorized. Any antenna that is of the same type and of equal or less directional gain as an antenna that is authorized with the intentional radiator may be marketed with, and used with,  that intentional  radiator.
Note 4: For all products market in US, OEM has to limit the operation channels in CH1 to CH11 for 2.4G band by supplied firmware programming tool. OEM shall not supply any tool or info to the end-user regarding to Regulatory Domain change.
IC WARNING
This device contains licence-exempt transmitter(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:

1. This device may not cause interference.
2. This device must accept any interference, including interference that may cause undesired operation of the device.

IC Radiation Exposure Statement:
This device and its antenna(s) must not be co-located with any other transmitters except in accordance with IC multi-transmitter product procedures. Referring to the multi-transmitter policy, multiple-transmitter(s) and module(s) can be operated simultaneously without reassessment permissive change.
This equipment complies with IC RSS-102 radiation exposure limits set forth for an uncontrolled  environment. This equipment should be installed and operated with minimum distance 20cmbetween the radiator & your body.
This module is limited to OEM installation only and must not be sold to end- users, end-user has no manual instructions to remove or install the device, only software or operating procedure shall be placed in the end-user operating manual of final products. Additional testing and certification may be necessary when multiple modules are used.
Any changes or modifications not expressly approved by the manufacturer could void the user’s  authority to operate this equipment.
The final end product must be labeled in a visible area with the following ” Contains IC: 250623394P”.

Revision History

Date

| Version|

Updated Content

---|---|---
4/20/2023| 1.0| Preliminary version
5/22/2023| 1.1| Added some electrical parameters
6/20/2023| 1.2| Changed current value and IO ports
7/4/2023| 1.3| Added shielding, BLE packet transmission current and XIP, modified PIN descriptions, power supply requirements and some reception sensitivity parameters.
8/10/2023| 1.4| Changed pin15, pin16 IO ports; pulling down PA7 into download mode

Copyrights

It is prohibited to use or copy all or any part of contents in this manual without prior permission, especially applicable for trademarks, models, part numbers and figures.

Contact Us

Ms Zhou
Hangzhou BroadLink Technology Co., Ltd.
Add: Building C, 57 Jiang’er Road, Binjiang District, Hangzhou, P.R.China
Postcode: 310052
Tel: +86-571-85071744-8010
Email: bingqi.zhou@broadlink.com.cn
For more information of BroadLink Wi-Fi modules, please visit our website: www.broadlink.com.cn

References

• Broadlink博联智能-全球领先的智能家居解决方案提供商

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