WorthCloud W-BW2K User manual

W-BW2K
User manual
Wi-Fi&BLE combo
Version: 20210902

8
Table of contents
1. product description ......................................................................................................................... 8
2. Hardware introduction ................................................................................................................. 12
3.Pin Definition ....................................................................................................................................13
4.Electrical Characteristics ................................................................................................................ 14
5.Mechanical Dimensions .................................................................................................................15
6.typical application ...........................................................................................................................15
7.Reflow Soldering Conditions......................................................................................................... 9

9
product description
1.1description
It is worth watching the W-BW2K embedded Wi-Fi +BT module provides a
solution for connecting the user's physical device to the Wi-Fi wireless network or
BLE Bluetooth direct connection and provides a UART serial port and other data
processing solutions, through this module , traditional low-end serial devices or
MCU-controlled devices can easily access Wi-Fi or BLE wireless networks, so as to
achieve IoT network control and management.
It is worth seeing that the W-BW2K module adopts the industry's low-power
embedded structure, and has been professionally optimized for applications in
low-flow and low-frequency data transmission fields such as smart furniture, smart
grids, handheld devices, personal medical care, and industrial control.
It is worth seeing that the W-BW2K module is a compact module that
integrates all Wi-Fi & BLE functions, and is easy to integrate on the hardware PCB
single-board circuit of the customer's product. It is equipped with a built-in PCB
antenna and supports IPEX external antennas.
Figure 1. System Block Diagram

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1.2 Features
Support Wi-Fi 802.11b/g/n and BLE 5.1 wireless standards
Using 32-bit MCU, the main frequency is up to 120MHz, 256KB RAM, 2MB
Flash
Support Wi-Fi/BLE to UART data communication
Support Wi-Fi STA/AP, and Direct working mode
Support AP and STA dual roles in parallel
50 MHz clock frequency SDIO
Six PWM outputs supporting high-speed clock or low-power clock
Support wireless and remote firmware upgrade, provide wireless batch
configuration tool
SDK development kit is available to support secondary development
Supports different types of antenna options
Built-in PCB antenna
Support IPEX external antenna
3.3V single power supply
Dimensions:
16mm x 24mm x 3mm, SMD16 package
1.3 Main application areas
Intelligent lighting
Smart socket
Intelligent building
Industrial control
Remote device monitoring
IoT applications

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1.4Module basic parameters
Table1. It is worth seeing the technical parameters of W-BW2K module
Classification
parameter
value
Wi-Fi
wireless
standard
802.11 b/g/n
Frequency
Range
2.412GHz-2.472GHz
transmit power
802.11b: +18dBm ± 1dBm (@11Mbps)
802.11g: +15dBm ± 1dBm (@54Mbps)
802.11n: +14dBm ± 1dBm (@HT20， MCS7)
802.11n: +14dBm ± 1dBm (@HT40， MCS7)
Receive
sensitivity
802.11b: -98dBm (@1Mbps)
802.11b: -88dBm (@11Mbps)
802.11g: -90dBm (@6Mbps)
802.11g: -75dBm (@54Mbps)
802.11n: -72dBm (@MCS7)
BLE
wireless
standard
BLE5.1
Frequency
Range
2.402GHz-2.480GHz
transmit power
Max 10dBm
Receive
sensitivity
-96 dBm
Hardware
parameters
antenna
PCB antenna
Data interface
UART
GPIO，SPI，PWM，ADC，I2C，IR
GPIO
source current：3mA（VCC-0.3V）
sink current：3mA（GND+0.3V）
Operating
Voltage
2.7~3.6V
Working
current
TX=17 dBm, 802.11b 11 Mbps type:210 mA
TX=15 dBm, 802.11g 54 Mbps type:170 mA
RX=-10 dBm,802.11b 11 Mbps type:50 mA
RX=-10 dBm,802.11g 54 Mbps type:60 mA
Operating
temperature
-40℃- 105℃

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storage
temperature
-40℃- 125℃
humidity
<85%
Moisture Level
(MSL)
Level 3
size
16mm x 24mm x 3mm
Software
parameters
Wireless
network type
STA/AP
Security
Mechanism
WEP/WPA-PSK/WPA2-PSK/WPA3-SAE
encryption
type
WEP64/WEP128/TKIP/AES
upgrade
firmware
local wireless
Remote upgrade
Custom
Development
Provide SDK for secondary development of
customers
Network
protocol
IPv4， TCP/UDP/HTTP/TLS 1.2
User
configuration
AT+ command set, Web page
1.HARDWARE INTRODUCTION
The appearance of the combo series Wi-Fi module is as follows.
Figure 2. Appearance of W-BW2K

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3.PIN DEFINITION
Figure 3. W-BW2K Pin Definition
Table1. W-BW2K pin function definition
pin
describe
signal type
illustrate
1
RST
I
Low-level reset, high-level active (internally
pulled high) corresponds to IC-CEN
2
P23/ADC3/TDO/
F_SO
IO
Set high when general IO port or ADC4 or RF
receiving
3
CEN
I
Enable pin, internal pull-up processing,
compatible with other module design
docking
4
P14/SD_CLK/SCK
/ANT0
IO
General IO port or SD CLK or SPI SCK or BLE
antenna control ANT0
5
P26/ADC1/IRDA/
PWM5
IO
General IO port or ADC1 or infrared receiver
or PWM5
6
P24/ADC2/LPO_
CLK/PWM4
IO
General purpose IO port or ADC2 or low
power clock 32.768K output or PWM4
7
P6/CLK13M/PW
M0
IO
General purpose IO port or crystal clock
divided by 1, 2, 4, 8 output or PWM0
8
3V3
I
power supply
9
GND
I
GND
10
P9/BT_PRIORITY/
PWM3
IO
Common IO port or BT_PRIORITY control or
PWM3 for coexistence of WIFI and BT
11
P0/UART2_TXD/I
2C2_SCL
IO
General purpose IO port or serial port UART2's
TXD or I2C2's SCL
12
P16/SD_CMD/M
OSI/ANT2
IO
Universal IO port or SD's CMD or SPI's MOSI
or BLE antenna to control ANT2
13
P8/BT_ACTIVE/P
WM2
IO
Common IO port or BT_ACTIVE control or
PWM2 for coexistence of WIFI and BT
14
P7/WIFI_ACTIVE/
PWM1
IO
Common IO port or WIFI_ACTIVE control or
PWM1 where WIFI and BT coexist

14
15
P10/DL_RX/UAR
T1_RXD
IO
General IO port or RXD downloaded by
UART for FLASH or RXD of serial port UART1
16
P11/DL_TX/UART
1_TXD
IO
General IO port or TXD downloaded by
UART for FLASH or TXD of serial port UART1
17
P1/UART2_RXD/I
2C2_SDA
IO
RXD of general IO port or serial port UART2
or SDA of I2C2
18
P20/I2C1_SCL/TC
K/F_SCK
IO
General-purpose IO port or SCL of I2C1 or
TCK of JTAG or Flash using SPI to download
the clock
19
P21/ADC6/I2C1_
SDA/TMS/
F_CSN
IO
General-purpose IO port or SDA of ADC6 or
I2C1 or TMS of JTAG or Flash when
downloading with SPI Chip select
20
P22/ADC5/CLK_2
6M/TDI/
TXEN/F_SI
IO
General IO port or ADC5 or crystal frequency
output or TDI of JTAG or set high when
transmitting or data input when Flash is
downloaded by SPI
21
P23/ADC3/TDO/
F_SO
IO
General-purpose IO port or ADC3 or JTAG
TDO or Flash data output when downloaded
with SPI
22
NC
-
empty pin
4.ELECTRICAL CHARACTERISTICS
Table2. Electrical Characteristics
parameter
condition
min
type
max
unit
Maximum Soldering
Temperature
IPC/JEDEC J-STD-020
-
-
260
°C
Electrostatic discharge
(Human Body Model HBM)
TAMB=25°C
-
-
2.5
KV
Electrostatic discharge (MM)
TAMB=25°C
-
-
0.25
KV

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5.MECHANICAL DIMENSIONS
The physical dimensions of W-BW2K (unit: mm) are as follows:
Figure 4. W-BW2K Mechanical Dimensions
6.TYPICAL APPLICATION
6.1 Antenna layout requirements
(1) The installation position of the module on the motherboard, the following
two methods are recommended:
Solution 1: Put the module on the edge of the motherboard, and the antenna area
extends out of the edge of the motherboard.
Option 2: Put the module on the edge of the motherboard, and hollow out an area
on the edge of the motherboard at the antenna position.
In order to meet the performance of the on-board antenna, it is forbidden to
prevent metal devices around the antenna and keep away from high-frequency
devices.。

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7.REFLOW SOLDERING CONDITIONS
1. Heating method: conventional convection or IR convection;
2. Allowable reflow times: 2 times, based on the following ramped heating conditions;
3. Maximum temperature: 250°C.

FCC warning statements:
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:
ЬReorient or relocate the receiving antenna.
ЬIncrease the separation between the equipment and receiver.
ЬConnect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
ЬConsult the dealer or an experienced radio/TV technician for help.
Caution: Any changes or modifications to this device not explicitly approved
by manufacturer could void your authority to operate this equipment.
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.
The device has been evaluated to meet general RF exposure requirementThis
equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment.
This equipment should be installed and operated with minimum distance cm
between the radiator & your body.