World’s leading smart home solution provider BL3385-P Version：1.0 Em b e d d e d Release date： June，16, 20,21 Features Support IEEE802.11 b/g/n standards Support WEP, WPA and WPA2 encryption Support UART/PWM/ADC/GPIO/I2C 4x PWM Up to 14GPIOs Pro d u c t Working temperature: -10℃ to +85℃ Stamp style SMD for surface mounting production interfaces Support STA/AP/AP+STA modes Support SmartConfig Support TLS/SSL protocols Support PCB antenna 3.
-2Content 1. Overview ............................................................................................................................ - 3 2. Basic Specifications ............................................................................................................ - 3 2.1. Power Consumption ................................................................................................... - 3 2.2. Working Environment .......................................................................
-3- 1. Overview BL3385-P is a cost-effective embedded Wi-Fi module designed by BroadLink, which supports 802.11 b/g/n standards and UART communication with other devices. 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. The module integrates an ARM Cortex-M4 processor speed up to 160MHz with 352KB SRAM and 1MB flash. 2.
-4- 2.2. Working Environment Please refer to Table 2 for working environment data. Table 2 BL3385-P Working Environment Data Symbol Description Min. Max. Units Ts Storage temperature -40 125 ℃ TA Ambient operating temperature -10 85 ℃ Vdd Supply voltage 3.3 4 V Vio Voltage on IO pin 0 VDD V ESD HBM 1000 2000 V 3. Radio Specifications 3.1. Basic Radio Specification Please refer to Table 3 for radio specification.
-5- 3.2. Radio Performance 3.2.1. IEEE 802.11b Table 4 Basic specifications under IEEE802.11b ITEM Specification Modulation Type DSSS 2412MHz~2462MHz Frequency range Channel CH1 to CH11 Data rate 1, 2, 5.5, 11Mbps Table 5 Transmitting performance under IEEE802.11b TX Characteristics Min. Power@11Mbps Frequency Error Typical Max. Unit 13.09 13.83 dBm -10 +10 ppm -15 dB EVM@11Mbps Transmit spectrum mask Pass Table 6 Receiving performance under IEEE802.
-66, 9, 12, 18, 24, 36, 48, 54Mbps Data rate Table 8 Transmitting performance under IEEE802.11g TX Characteristics Min. Power@54Mbps Frequency Error Typical Max. Unit 11.62 12.45 dBm -10 +10 ppm -29 dB -30 EVM@54Mbps Transmit spectrum mask Pass Table 9 Receiving performance under IEEE802.11g RX Characteristics Min. Typical Max. Unit Minimum Input Level Sensitivity dBm -77 54Mbps 3.2.3 IEEE802.11n IEEE802.11n 20MHz bandwidth mode Table 10 Basic specifications under IEEE802.
-7Frequency Error -10 EVM@HT20, MCS7 +10 ppm -29 dB Transmit spectrum mask Pass Table 12 Receiving performance under IEEE802.11n with 20MHz RX Characteristics Min. Typical Max. Unit Minimum Input Level Sensitivity MCS7 -72 4. BL3385-P Hardware Information 4.1. Footprint Sequence Please refer to Fig 1 for the footprint sequence of BL3385-P.
-8- Fig 1 BL3385-P Footprint sequence 4.2. Footprint Definitions Please refer to Table 16 for the footprint definitions of BL3385-P.
-911 12 13 14 GPIO19 GPIO20 VDD GND PWM7 PWM0 SPI-MOSI SPI-MISO Note: 1. In default, UART2 (pin4 and pin5) are used for bypass communication and UART0 (pin6 and pin7) are used for output of debugging information and burning firmware. Please refer to the description in DC Characteristics for UART output current level. 2. GPIO0 is the hardware function pin, avoid pulling up the two pins before powering on 3. GPIO0 and GPIO13 are pulled up at the same time.
- 10 - Module Device PCB Fig 2 BL3385-P Recommended PCB layout 5. 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 Fig 7.
- 11 External MCU Wi-Fi module Capacitor Grounding Fig 3 Circuit diagram (3.3V) If your device is powered by 5V, you can refer to the circuit shown in Fig Fig 8 or design your own circuit for power conversion. The value of resistor can be adjusted according to actual circuit design.
- 12 - 5.2. Power Supply Requirement If an LDO is used to supply the module with 3.3V power, C1 capacitor can be considered to be used with 10u-22u; If a DCDC is used to supply 3.3V power, C1 capacitor can be considered to be used with 22uF. It is recommended to supply the module with power higher than 400mA to ensure enough power supply to the module and avoid power down during data transmission.
- 13 - Revision History Date June 16, 2021 Version 1.0 Updated Content Preliminary version 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 Gubei Electronics Technology Co., Ltd. Add: Room 106, Building 1, No. 611 Jianghong Road, Binjiang District, Hangzhou, P.R.China Postcode: 310052 Tel: 0571-85071744-8010 Email: bingqi.zhou@broadlink.
- 14 FCC ID:2ATEV-BL3385-P IC ID:25062-BL3385P CAN ICES-3 (B)/NMB-3(B) Please take attention that changes or modification not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This device complies with Part 15 of the FCC Rules.
- 15 (1) Operational use conditions ***if your module has professional users use condition limitations, please keep below sentence here Module has professional users use condition limitations, Host product manufacturer please ensure giving such warning like “Product is limited to professional users use” in your product’s instruction. (2) Antenna used Antenna Type Brand/ manufacturer Model No. Max. Antenna Gain PCB / 2dBi Hangzhou BroadLink Technology Co.
- 16 other FCC rules that apply to the host not covered by the modular transmitter grant of certification. Host manufacturer in any case shall ensure host product which is installed and operating with the module is in compliant with Part 15B requirements. Please note that For a Class B or Class A digital device or peripheral, the instructions furnished the user manual of the end-user product shall include statement set out in §15.
