A Basic Introduction Of CC3220SF Wi-Fi Module RF-WM-3220B1

CC3220SF Wi-Fi Module RF-WM-3220B1 Sep 15, 2018

The post will briefly introduce what RF-WM-3220B1 WiFi module is, what features it has and where it is applied in.

What is RF-WM-3220B1 WiFi module?

RF-WM-3220B1 is a Wi-Fi IoT module built on basis of TI CC320SF IC, which is embedded with a Cortex-M4 MCU. It supports a variety of peripherals i.e. camera interface, I²S, SD/MMC, UART, SPI, I²C, ADC and GPIO. The module supports IEEE 802.11 b/g/n standards, and is able to work at Station, AP and Wi-Fi Direct modes. Antenna wise, it offers 3 options: ceramic antenna, IPEX base and antenna welding.

RF-WM-3220B1 supports TCP/IP protocols and relevant applications. It can be widely applied in a big variety of IoT scenarios i.e. home automation, home appliance control, security systems, smart energy, internet gateway, industrial control, smart metering, wireless audio, wireless doorbell and sensor networking nodes etc.

The module has two operation modes: AT Command Mode and Data Transparent Transmission Mode. With AT Command Mode, the developer can write a series of AT commands to route the transmission of the data. While in Data Transparent Transmission Mode, the modules automatically transmit the data by broadcasting the UDP packets with designated destinations. The developer or user does not have to instruct how the data transmission is routed in the latter mode. However, to switch between operation modes for the network or change the work mode of a module, the user has to use some simple AT commands to instruct the modules.

Applications of RF-WM-3220B1 WiFi module

Applications of RF-WM-3220B1 WiFi module

Features of RF-WM-3220B1 WiFi module

The module which works at Station mode can exchange data between any devices in the LAN, beside it can through a router to enter the internet, and communicate among remote devices.

RF-WM-3220B1 WiFi module at station mode

One module works at AP mode as TCP Server, and the other modules works at Station mode as TCP Client to communicate with it.

one module works at AP mode

Pin Assignment

Pin Assignment

Package Size

Package Size

Module Thickness

No.	Parameter item	Parameter details	Description
1	Chip	CC3220SF	TI
2	Size	31*20mm	-
3	Weight	5g	-
4	Frequency Band	2402 MHz ～ 2480MHz
6	PCB	4-layer	Impedance-matching, lead-free
7	Supply Voltage	2.3~3.6V DC	The voltage higher than 3.6V is forbidden
8	Operation Range	100m	Open area; +17dBm;
8	Operation Range	100m	Open area; +17dBm;
9	Max Power	Max +17dBm	50mW
10	Power consumption	Averge:1.AP Mode:74mA 2.STA mode Active:20mA 3.STA Mode Always Connected(Long Sleep Intervals:400ms):1.5mA
10	Power consumption	4.STA Mode Hibernate:35uA
11	Communication interface	IO	See details in Pin definition
12	Antenna type	PCB/IPEX	50Ω characteristic impedance/-
13	Operating temperature	-40 ~ +85℃	Industrial-grade
14	Operating humidity	10% ~ 90%	Relative humidity, without condensation
15	Storage temperature	-55 ~ +125℃	Industrial-grade
16	Sensitivity	-80dBm	Find more details on CC3220SF datasheet
17	Interface	Uart/SPI/IO/I2C/I2S/SD/PWM/ADC
18	Flash	1MB(MAX：16MB)
19	Core	Cortex-M4(32bits)
20	clock speed	80MHz
21	Protocol	IEEE 802.11 b/g/n
22	*RAM(available)	256KB(200KB)
23	Max Transmit Rate	400KBytes/S(SPI<-->WiFi)

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Media & Resources

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CC3220SF Wi-Fi Module RF-WM-3220B1

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