Texas Instruments CC3220 Manuale utente

SWRU463A–February 2017–Revised January 2018

CC3220 SimpleLink™ Wi-Fi®LaunchPad™ Development Kit Hardware

SimpleLink, LaunchPad, Internet-on-a chip, BoosterPack, Code Composer Studio, Tiva are trademarks of Texas Instruments.

ARM, Cortex are registered trademarks of ARM Limited.

Bluetooth is a registered trademark of Bluetooth SIG.

IAR Embedded Workbench is a registered trademark of IAR Systems AB.

Wi-Fi is a registered trademark of Wi-Fi Alliance.

All other trademarks are the property of their respective owners.

User's Guide

SWRU463A–February 2017–Revised January 2018

CC3220 SimpleLink™ Wi-Fi®LaunchPad™ Development

Kit Hardware

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. For more information, visit www.ti.com/simplelink.

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.

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CC3220 SimpleLink™ Wi-Fi®LaunchPad™ Development Kit Hardware

Contents

1 Introduction ................................................................................................................... 3

2 Hardware Description ....................................................................................................... 5

3 Development Environment Requirements .............................................................................. 23

4 Additional Resources ...................................................................................................... 23

List of Figures

1 WEEE Statement ............................................................................................................ 3

2 CC3220 LaunchPad™ EVM Overview ................................................................................... 5

3 CC3220 Block Diagram..................................................................................................... 6

4 Pin 1 Marking on CC3220LP (3V3 Tag).................................................................................. 7

5 Default Jumper Configuration for JTAG Lines........................................................................... 7

6 JTAG IN Connector (J8).................................................................................................... 8

7 I2C Bus Connections ........................................................................................................ 9

8 Power Jumpers J14, J21, J20, J19, J17, and J18..................................................................... 10

9 SOP Jumpers (Default Setting Shown) ................................................................................. 12

10 UART Routed to USB COM Port......................................................................................... 13

11 UART Routed to 20-Pin Header Connector ............................................................................ 13

12 CC3220 BoosterPack Header Pin Assignments....................................................................... 15

13 Powering From USB Jumper Settings................................................................................... 16

14 Powering the CC3220LP From Battery ................................................................................. 17

15 Only CC3220 and Serial Flash Powered by Battery................................................................... 18

16 Low-Current Measurement (<1 mA)..................................................................................... 19

17 Active Power Measurements (>1 mA)................................................................................... 20

18 Using Onboard Antenna (Default Condition) ........................................................................... 21

19 Board Modified for External Antenna Connections .................................................................... 21

20 CC3220x LaunchPad Top-Layer Assembly Drawing.................................................................. 22

List of Tables

1 JTAG Header Pin Definitions............................................................................................... 8

2 I2C Jumper Definitions ...................................................................................................... 9

3 Default I2C Addresses (of Onboard Sensors)............................................................................ 9

4 Jumper Settings for LaunchPad Power ................................................................................. 10

5 External Supply Connections and LED Enable Jumper............................................................... 11

6 Reset Pullup Jumper....................................................................................................... 11

7 SOP[2:0] (J13 on LaunchPad)............................................................................................ 12

8 Push-Button Definitions ................................................................................................... 14

9 LED Indicators.............................................................................................................. 14

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Introduction

SWRU463A–February 2017–Revised January 2018

CC3220 SimpleLink™ Wi-Fi®LaunchPad™ Development Kit Hardware

1 Introduction

1.1 CC3220 LaunchPad™

Created for the Internet of Things (IoT), the SimpleLink Wi-Fi CC3220 device is a single-chip

microcontroller (MCU) with built-in Wi-Fi connectivity for the LaunchPad ecosystem, which integrates a

high-performance ARM Cortex-M4 MCU and lets customers develop an entire application with one device.

With on-chip Wi-Fi, Internet, and robust security protocols, no prior Wi-Fi experience is required for fast

development.

The CC3220 LaunchPad, referred to by its part number 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 add-on boards, such as graphical displays, audio codecs, antenna selection, environmental

sensing, and more. Figure 2 shows the CC3220 LaunchPad. There are two variants of the LaunchPad:

the CC3220S-LAUNCHXL and the CC3220SF-LAUNCHXL. This user's guide applies to both variants, and

any differences are pointed out in relevant sections.

Multiple development environment tools are also available, including TI’s Eclipse-based Code Composer

Studio™ (CCS) integrated development environment (IDE) and IAR Embedded Workbench®. More

information about the LaunchPad, the supported BoosterPack modules, and the available resources can

be found at TI’s LaunchPad portal. Also visit the CC3220 Wiki page for design resources and example

projects.

NOTE: The maximum RF power transmitted in each WLAN 2.4-GHz band is 17.5 dBM (EIRP

power).

NOTE: The antennas used for this transmitter must be installed to provide a separation distance of

at least 20 cm from all persons, and must not be colocated or operating in conjunction with

any other antenna or transmitter.

NOTE: All figures and references in this document apply to RevA and RevB. Most of the document

also applies to higher revisions, unless otherwise stated. For the exact list of changes made

across board revisions, see the Revision History.

Figure 1. WEEE Statement

Introduction

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CC3220 SimpleLink™ Wi-Fi®LaunchPad™ Development Kit Hardware

1.2 Key Features

• CC3220, SimpleLink, Wi-Fi, Internet-on-a chip solution with integrated MCU

• 40-pin LaunchPad standard that leverages the BoosterPack ecosystem

• XDS110-based JTAG emulation with serial port for flash programming

• Two buttons and three LEDs for user interaction

• Back-channel universal asynchronous receiver/transmitter (UART) through USB to PC

• Onboard chip antenna with U.FL for conducted testing

• Onboard accelerometer and temperature sensor for out-of-box demo

• Micro USB connector for power and debug connections

1.3 Kit Contents

• CC3220 LaunchPad development tool (CC3220SF-LAUNCHXL)

• Micro USB cable

• Quick start guide

1.4 Regulatory Compliance

The SimpleLink CC3220 Wi-Fi LaunchPad is tested for and found to be in compliance with FCC and ISED

regulations regarding unlicensed intentional radiators.

Hereby, Texas Instruments Inc. declares that the radio equipment type CC3220S-LAUNCHXL and

CC3220SF-LAUNCHXL are in compliance with Directive 2014/53/EU. The full text of the EU declaration of

conformity is available at the following internet addresses:

•CC3220S-LAUNCHXL

•CC3220SF-LAUNCHXL

Micro USB connector

(for debug)

Reset

button Product variant

label

External battery connector

Reset pullup enable

User button

Pin 15

Factory reset button

Enable LED

power

Chip

antenna

Sensor

pullups

U.FL connector

(lab tests)

Direct flash access

User button

Pin 04

Enable OPAMP power

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Hardware Description

SWRU463A–February 2017–Revised January 2018

CC3220 SimpleLink™ Wi-Fi®LaunchPad™ Development Kit Hardware

2 Hardware Description

Figure 2 shows the CC3220 LaunchPad EVM.

Figure 2. CC3220 LaunchPad™ EVM Overview

CC3220

S-Flash

32Mbit

40-MHz XTAL

32.768-kHz XTAL

XDS110 JTAG

Debug Probe

USB

Conn

Filter

Acceleration

Sensor

BMA222

Temp Sensor

TMP006

3.3-V LDO

2× AA Battery

Conn Reverse

Protection

5 V

VCC

Push Buttons

GPIO 13, 22 LEDs

GPIO 9,10,11

2× 20 Launchpad Headers

(Compatible with TI MCU Std)

JTAG/SWD

UART (Flashing/Log)

INT (GPIO13)

I2C

U. FL

Hardware Description

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CC3220 SimpleLink™ Wi-Fi®LaunchPad™ Development Kit Hardware

2.1 Block Diagram

Figure 3 shows the CC3220 block diagram.

Figure 3. CC3220 Block Diagram

2.2 Hardware Features

• CC3220, SimpleLink, Wi-Fi, Internet-on-a chip solution with integrated MCU

• 40-pin LaunchPad standard that leverages the BoosterPack ecosystem

• TI Standard XDS110-based JTAG emulation with serial port for flash programming

• Supports both 4-wire JTAG and 2-wire SWD

• Two buttons and three LEDs for user interaction

• Virtual COM port UART through USB on PC

• Onboard chip antenna with U.FL for conducted testing selectable using 0-Ωresistors

• Onboard accelerometer and temperature sensor for out-of-box demo, with option to isolate them from

the inter-integrated circuit (I2C) bus

• Micro USB connector for power and debug connections

• Headers for current measurement and external JTAG connection with an option to use the onboard

XDS110 to debug customer platforms

• Bus-powered device, with no external power required for Wi-Fi

• Long-range transmission with a highly optimized antenna (200-meter typical in open air with a 6-dBi

antenna AP)

• Can be powered externally, working down to 2.3 V (typical)

www.ti.com

Hardware Description

SWRU463A–February 2017–Revised January 2018

CC3220 SimpleLink™ Wi-Fi®LaunchPad™ Development Kit Hardware

2.3 Connecting a BoosterPack™

A compatible BoosterPack can be stacked on top of the LaunchPad using the 2-pin × 20-pin connectors.

The connectors do not have a key to prevent the misalignment of the pins or reverse connection.

Ensure that the VCC and 5-V pins are aligned with the BoosterPack module header pins. On the CC3220

LaunchPad, a small white 3V3 tag symbol is provided near pin 1 (see Figure 4) to orient all BoosterPack

modules. This same marking, provided on compatible BoosterPack modules, must be aligned before

powering up the boards.

Figure 4. Pin 1 Marking on CC3220LP (3V3 Tag)

2.4 Wired Connections, Jumper Settings, Buttons, and LEDs

2.4.1 JTAG Headers

The headers are provided on the board to isolate the CC3220 device from the onboard XDS110-based

JTAG emulator. These jumpers are shorted by default when the board is shipped from TI. Figure 5 and

Table 1 are for default configurations, and Figure 6 shows the external emulator connection.

Figure 5. Default Jumper Configuration for JTAG Lines

Hardware Description

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CC3220 SimpleLink™ Wi-Fi®LaunchPad™ Development Kit Hardware

(1) The only difference between Rev. A and Rev. B are the reference designators on the board.

(2) For SWD mode, only TCK and TMS must be shorted to the CC3220.

Table 1. JTAG Header Pin Definitions

Reference (Rev. A) Reference (Rev. B)(1) Use Comments

J3 (TCK)(2) J8 (TCK) JTAG / SWD

Jumpers populated: onboard emulator connected

Jumpers not populated: onboard emulator disconnected

J3 (TMS)(2) J8 (TMS) JTAG / SWD

J3 (TDI) J8 (TDI) JTAG

J3(TDO) J8 (TDO) JTAG

To connect an external emulator, remove these jumpers and place the external emulator on the JTAG IN

connector.

Figure 6. JTAG IN Connector (J8)

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Hardware Description

SWRU463A–February 2017–Revised January 2018

CC3220 SimpleLink™ Wi-Fi®LaunchPad™ Development Kit Hardware

2.4.2 I2C Connections

The board features an accelerometer and a temperature sensor for the out-of-box demo. These are

connected to the I2C bus, and can be isolated using the jumpers provided (shown as yellow jumpers J15

and J16 in Figure 7).

Figure 7. I2C Bus Connections

By removing J15 and J16, the accelerometer and the temperature sensors are isolated from the I2C bus.

This measure also removes the I2C pullup resistors from the sensor side of the circuit, and therefore any

connection to the circuit requires the user to install external pullup resistors.

Table 2 lists the I2C jumper definitions.

Table 2. I2C Jumper Definitions

Reference (Rev. A) Reference (Rev. B) Use Comments

J16 J2 I2C SDA Populated: CC3220 SDA connected to onboard sensors with

pullup

Open: CC3220 SDA disconnected from onboard sensors

J15 J3 I2C SCL Populated: CC3220 SCL connected to onboard sensors with

pullup

Open: CC3220 SCL disconnected from onboard sensors

2.4.2.1 Default I2C Addresses

Table 3 lists the default I2C addresses of the onboard sensors.

Table 3. Default I2C Addresses (of Onboard Sensors)

Sensor Type Reference Designator

on LP (Rev. A) Reference Designator

on LP (Rev. B) Part Number

(Manufacturer) Default Slave

Address (Hex)

Temperature (MEMS

IR Thermopile) U10 U6 TMP006 (TI) 0x41

Accelerometer

(Triaxial) U11 U10 BMA222E (Bosch) 0x18

Hardware Description

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CC3220 SimpleLink™ Wi-Fi®LaunchPad™ Development Kit Hardware

2.4.3 Power Connections

The board can be powered by using the onboard micro USB connector. An onboard DC-DC converter

provides 3.3 V for the CC3220 and the rest of the board to operate. This supply can be isolated from the

DC-DC using the jumpers on the board. See the yellow jumpers in Figure 8.

Figure 8. Power Jumpers J14, J21, J20, J19, J17, and J18

NOTE: The blue jumpers in Figure 8 are previously discussed (see Section 2.4.1) and are populated

by default. Figure 8 does not show unpopulated jumpers (which would be populated

normally).

Table 4 lists the jumper settings for the LaunchPad power.

Table 4. Jumper Settings for LaunchPad Power

Reference (Rev. A) Reference (Rev. B) Use Comments

J14 J5 OPAMP EN

If the jumper is uninstalled, the power supply to the

OPAMP is cut off. This can be used to enable low-

current measurements. Ensure that this jumper is on to

use the OPAMP to drive the input to the ADC. The

reference voltage of the ADC is 1.47 V, so up to 3.48 V

can be applied to the input of the OPAMP. For the

configuration of the OPAMP, see the CC3220

LaunchPad Design Files.

J21 J10 GND Ground reference

J20 J29 +5 VDC power

jumper Connects J19, +5 VDC to emulator section

J19 J12 Current

measurement Measures the current flowing into the CC3220 device.

Also includes the serial flash and any stacked

BoosterPack.

J17 J13 Board power Short: Supply the board power from the onboard DC-

DC converter. The board power includes the sensors,

LED, and the OPAMP used to drive the ADC input.

J18 J28 VSENSE Used to power the level shifters on the emulator side of

the board. The level shifters can be powered by

shorting this jumper. Removing this jumper enables

low-current measurement.

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