CC3220R Main Features Introduction Single-Chip Wireless ARM MCU Solution

TI's CC3220R is a SimpleLink™ Wi-Fi® and Internet of Things (IoT) single-chip wireless MCU platform, including Wi-Fi, Bluetooth® low energy, Sub-1 GHz and main MCU and a rich tool portfolio. The application processor ARM® Cortex®-M4 MCU (operating frequency 80MHz) has a user-dedicated 256KB RAM and an optional 1MB XIP flash memory; the network processor MCU runs all Wi-Fi and Internet logic layers, and the ROM-based subsystem includes 802.11b/g/n radio, baseband and MAC with a powerful encryption engine. It is mainly used in cloud connectivity, Internet gateways, home and building automation, home appliances, access control, security systems, smart energy, industrial control, smart sockets and metering, wireless audio, IP network sensor nodes, asset tracking and medical equipment. This article introduces the main features of CC3220R, hardware and embedded software overview, functional block diagram, application circuit and bill of materials, as well as the main features, circuit diagram, bill of materials and PCB design of SimpleLink™ Wi-Fi® LaunchPad™ development board CC3220-LAUNCHXL.

The CC3220x device is part of the SimpleLink™ microcontroller （MCU） platform which consists of Wi-Fi， Bluetooth® low energy， Sub-1 GHz and host MCUs， which all share a common， easy-to-use development environment with a single core software development kit （SDK） and rich tool set. A one-TIme integraTIon of the SimpleLink platform enables you to add any combinaTIon of the portfolio’s devices into your design， allowing 100 percent code reuse when your design requirements change.

Start your Internet-of-Things （IoT） design with a Wi-Fi® CERTIFIED® single-chip MCU System-on-Chip （SoC） with built-in Wi-Fi connectivity. Created for the IoT， the SimpleLink™ CC3220x device family from Texas Instruments™ is a single-chip solution， integrating two physically separated， on-chip MCUs.

• An application processor – ARM® Cortex®-M4 MCU with a user-dedicated 256KB of RAM， and an optional 1MB of XIP flash.

• A network processor MCU to run all Wi-Fi and Internet logical layers. This ROM-based subsystem includes an 802.11b/g/n radio， baseband， and MAC with a powerful crypto engine for fast， secure internet connections with 256-bit encryption.

The CC3220x wireless MCU family is part of the second generation of TI’s Internet-on-a-chip™ family of solutions. This generation introduces new features and capabilities that further simplify the connectivity of things to the Internet. The new capabilities including the following：

Enhanced Wi-Fi provisioning

Enhanced power consumption

Enhanced file system security （supported only by the CC3220S and CC3220SF devices）

Wi-Fi AP connection with up to four stations

More concurrently opened BSD sockets; up to 16 BSD sockets， of which 6 are secure

HTTPS support

RESTful API support

Asymmetric keys crypto library

The CC3220x wireless MCU family supports the following modes： station， AP， and Wi-Fi Direct®。 The device also supports WPA2 personal and enterprise security. This subsystem includes embedded TCP/IP and TLS/SSL stacks， HTTP server， and multiple Internet protocols. The device supports a variety of Wi-Fi provisioning methods including HTTP based on AP mode， SmartConfig™ Technology， and WPS2.0.

The power-management subsystem includes integrated DC-DC converters that support a wide range of supply voltages. This subsystem enables low-power consumption modes for extended battery life， such as low-power deep sleep， hibernate with RTC （consuming only 4.5 μA）， and shutdown mode （consuming only 1 μA）。

The device includes a wide variety of peripherals， including a fast parallel camera interface， I2S， SD， UART， SPI， I2C， and 4-channel ADC.The SimpleLink CC3220x device family comes in three different device variants： CC3220R， CC3220S， and CC3220SF.

The CC3220R and CC3220S devices include 256KB of application-dedicated embedded RAM for code and data， ROM with external serial flash bootloader， and peripheral drivers.

The CC3220SF device includes application-dedicated 1MB of XIP flash and 256KB of RAM for code and data， ROM with external serial flash bootloader， and peripheral drivers. The CC3220S and CC3220SF device options have additional security features， such as encrypted and authenticated file systems， user IP encryption and authentication， secured boot （authentication and integrity validation of the application image at flash and boot time）， and more.

The CC3220x device family is a complete platform solution including software， sample applications， tools， user and programming guides， reference designs， and the E2E™ online community. The device family is also part of the SimpleLink MCU portfolio and supports the SimpleLink developers ecosystem.

CC3220R main features:

• CC3220x SimpleLink™ Wi-Fi® Wireless Microcontroller Unit （MCU） System-on-Chip （SoC） is a Single-Chip With Two Separate Execution Environments： a User Application Dedicated ARM® Cortex®-M4 MCU and a Network Processor MCU to Run All Wi-Fi and Internet Logical Layers

• Chip-Level， Wi-Fi Alliance Wi-Fi CERTIFIED™

• Applications Microcontroller Subsystem

– ARM® Cortex®-M4 Core at 80 MHz

– Embedded Memory

– The CC3220R and CC3220S Variants Include 256KB of RAM

– The CC3220SF Variant is a Flash-Based Wireless MCU With Integrated 1MB of Flash and 256KB of RAM

– External Serial Flash

– McASP Supports Two I2S Channels

– SD

– SPI

– I2C

– UART

– 8-Bit Parallel Camera

– Four General-Purpose Timers With 16-Bit PWM Mode

– Watchdog Timer

– 4-Channel 12-Bit ADCs

– Up to 27 GPIO Pins

– Debug Interfaces： JTAG， cJTAG， SWD

• Wi-Fi Network Processor （NWP） Subsystem

– Wi-Fi Internet-on-a-chip™ Dedicated ARM MCU Completely Offloads Wi-Fi and Internet

Protocols from the Application MCU

– Wi-Fi Modes：

– 802.11b/g/n Station

– 802.11b/g Access Point （AP） Supports up to Four Stations

– Wi-Fi Direct® Client and Group Owner

– WPA2 Personal and Enterprise Security： WEP， WPA/WPA2 PSK， WPA2 Enterprise （802.1x）

– IPv4 and IPv6 TCP/IP Stack

– Industry-Standard BSD Socket Application Programming Interfaces （APIs）

– 16 Simultaneous TCP or UDP Sockets

– 6 Simultaneous TLS and SSL Sockets

– IP Addressing： Static IP， LLA， DHCPv4， DHCPv6 With DAD

– SimpleLink Connection Manager for Autonomous and Fast Wi-Fi Connections

– Flexible Wi-Fi Provisioning With SmartConfig™ Technology， AP Mode， and WPS2 Options

– RESTful API Support Using the Internal HTTP Server

– Embedded Network Applications Running on Dedicated Network Processor

– Wide Set of Security Features：

– Hardware Features：

– Separate Execution Environments

– Device Identity

– Hardware Crypto Engine for Advanced Fast Security， Including： AES， DES， 3DES， SHA2， MD5， CRC， and Checksum

– Initial Secure Programming：

– Debug Security

– JTAG and Debug Ports are Locked

– Personal and Enterprise Wi-Fi Security

– Secure Sockets （SSLv3， TLS1.0/1.1/TLS1.2）

– Networking Security

– Personal and Enterprise Wi-Fi Security

– Secure Sockets （SSLv3， TLS1.0， TLS1.1， TLS1.2）

– HTTPS Server

– Trusted Root-Certificate Catalog

– TI Root-of-Trust Public key

– SW IP Protection

– Secure Key Storage

– File System Security

– Software Tamper Detection

– Cloning Protection

– Secure Boot： Validate the Integrity and Authenticity of the Runtime Binary During Boot

– Embedded Network Applications Running on the Dedicated Network Processor

– HTTP/HTTPS Web Server With Dynamic User Callbacks

– mDNS， DNS-SD， DHCP Server

– Ping

– Recovery Mechanism—Can Recover to Factory Defaults or to a Complete Factory Image

– Wi-Fi TX Power

– 18.0 dBm @ 1 DSSS

– 14.5 dBm @ 54 OFDM

– Wi-Fi RX Sensitivity

– –96 dBm @ 1 DSSS

– –74.5 dBm @ 54 OFDM

– Application Throughput

– UDP： 16 Mbps

– TCP： 13 Mbps

• Power-Management Subsystem

– Integrated DC-DC Converters Support a Wide Range of Supply Voltage：

– VBAT Wide-Voltage Mode： 2.1 V to 3.6 V

– VIO is Always Tied With VBAT

– Preregulated 1.85-V Mode

– Advanced Low-Power Modes

– Shutdown： 1 μA

– Hibernate： 4.5 μA

– Low-Power Deep Sleep （LPDS）： 135 μA

– Recovery Mechanism—Can Recover to Factory Defaults or to a Complete Factory Image

– Wi-Fi TX Power

– 18.0 dBm @ 1 DSSS

– 14.5 dBm @ 54 OFDM

– Wi-Fi RX Sensitivity

– –96 dBm @ 1 DSSS

– –74.5 dBm @ 54 OFDM

– Application Throughput

– UDP： 16 Mbps

– TCP： 13 Mbps

• Power-Management Subsystem

– Integrated DC-DC Converters Support a Wide Range of Supply Voltage：

– VBAT Wide-Voltage Mode： 2.1 V to 3.6 V

– VIO is Always Tied With VBAT

– Preregulated 1.85-V Mode

– Advanced Low-Power Modes

– Shutdown： 1 μA

– Hibernate： 4.5 μA

– Low-Power Deep Sleep （LPDS）： 135 μA

CC3220R Applications:

• For Internet-of-Things （IoT） applications， such as：

– Cloud Connectivity

– Internet Gateway

– Home and Building Automation

– Appliances

– Access Control

– Security Systems

– Smart Energy

– Industrial Control

– Smart Plug and Metering

– Wireless Audio

– IP Network Sensor Nodes

– Asset Tracking

– Medical Devices

Figure 1. CC322x hardware overview

Figure 2. CC322x embedded software overview

Figure 3. CC322x functional block diagram

Figure 4. CC322x wide voltage mode application circuit diagram

Figure 4 CC322x wide voltage mode application circuit material list:

Figure 5. CC322x pre-regulation 1.85V mode application circuit diagram

Figure 5 CC322x pre-regulated 1.85V mode application circuit Bill of materials:

CC3220 SimpleLink™ Wi-Fi® LaunchPad™ Development Board CC3220-LAUNCHXL

The CC3220 device is part of the SimpleLink™ microcontroller （MCU） platform which consists of Wi-Fi®， Bluetooth® low energy， Sub-1 GHz and host MCUs. All share a common， easy-to-use development environment with a single core software development kit （SDK） and rich tool set. A one-time integration of the SimpleLink platform lets you add any combination of devices from the portfolio into your design. The ultimate goal of the SimpleLink platform is to achieve 100 percent code reuse when your design requirements change.

The CC3220 SimpleLink LaunchPad™ Development Kit （CC3220-LAUNCHXL） is a low-cost evaluation platform for ARM® Cortex®-M4-based MCUs. The LaunchPad design highlights the CC3220 Internet-on-a chip™ solution and Wi-Fi capabilities. The CC3220 LaunchPad also features temperature and accelerometer sensors， programmable user buttons， three LEDs for custom applications， and onboard emulation for debugging. The stackable headers of the CC3220 LaunchPad XL interface demonstrate how easy it is to expand the functionality of the LaunchPad when interfacing with other peripherals on many existing BoosterPack™ Plug-in Module add-on boards， such as graphical displays， audio codecs， antenna selection， environmental sensing， and more.