Freescale Semiconductor TWR-K20D72M Manual de usuario

Quick Start Guide

TWR-K20D72M

Low-Power 32-bit ARM®Cortex™-M4 MCUs with

High-Precision Analog, Connectivity and Scalability

TOWER SYSTEM

Quick Start Guide

Get to Know the TWR-K20D72M

Primary

Connector

Infra Red

MicroUSB

Connector

Microphone

Power/OSJTAG

MiniB USB

Connector

JTAG

Connector

Secondary

Connector

General Purpose

Touch Plug-In

Socket (TWRPI)

Potentiometer

SW2

SW1

Touch TWRPI

Socket

TSI Electrodes

Board Power

Selector

SW3/Reset

Figure 1: Front side of TWR-K20D72M module.

TOWER SYSTEM

TWR-K20D72M

Freescale Tower System

The TWR-K20D72M MCU module is designed to work either in stand-alone

mode or as part of the Freescale Tower System, a modular development platform

that enables rapid prototyping and tool re-use through reconfigurable hardware.

Begin constructing your Tower System today by visiting freescale.com/Tower for

additional Tower System MCU modules and compatible peripherals.

Figure 2: Back side of TWR-K20D72M module.

Accelerometer

VBAT (RTC)

Battery

Holder

Buzzer

TWR-K20D72M Features

• MK20DX256VLL7MCU(72MHz,256KBflash,64KBRAM,32KBFlexNVM,

low power, 100 LQFP package)

• USBsupportwithMicroUSBconnectoronboard,noKITneededfordualrole

USB feature evaluation

• Twocapacitivetouchpads

• Socketforcapacitivetouchpaddaughterboard(TouchTWRPI)

• SocketforTowerplug-in(TWRPI,e.g.sensorboard)

• Three-axisdigitalaccelerometer(MMA8451Q)

• Potentiometer,fourLEDs,pushbuttons,infraredportandbatteryholder

• Microphoneandbuzzer

• On-boarddebugcircuitMC9S08JM60opensourceJTAG(OSJTAG)

with virtual serial port

Quick Start Guide

TOWER SYSTEM

Step-by-StepInstallationInstructions

Install the

Software and Tools

InstalltheP&EMicroKinetisTower

toolkittoinstalltheOSJTAGand

USB-to-Serial drivers. These can be

foundontheDVDunder“Software.”

Configure the Hardware

Connect one end of the USB cable

to the PC and the other end to the

Power/OSJTAGmini-Bconnector

on the TWR-K20D72M module.

Allow the PC to automatically

configure the USB drivers if needed.

Press Touch Electrodes

A different tone will beep when either

electrode1 or electrode2 is pressed

andtheassociatedLEDwillturnon.

Tilt the Board

The board will generate a different

tone depending on the tilt angle.

Whistle into the

Microphone

The board will respond with a tone.

Learn More about the

Kinetis 72 MHz Family

Find more bare-metal labs

and software for the

Kinetis K20 MCUs at

freescale.com/TWR-K20D72M.

Inthisquickstartguide,youwilllearnhowtosetuptheTWR-K20D72Mmodule

and run the default demonstration.

Quick Start Guide

TWR-

K20D72M

JumperOptions

The following is a list of all the jumper options. The default installed jumper

settings are shown in white text within the red boxes.

Jumper

Option

Setting

Description

J6 MCU power connection

ON Connect on-board 3.3V or 1.8V supply to MCU

OFF Isolate MCU from power (connect an ammeter to measure current)

J13 VBAT power selection

1-2 Connect VBAT to on-board 3.3V or 1.8V supply

2-3 Connect VBAT to the higher voltage between on-board supply or

coin cell supply

J18 3.3V VOUT selection

ON Connect USB 3.3V regulator output to MCU_PWR

OFF Disconnect USB 3.3V regulator output to MCU_PWR

J10 JTAG board power

selection

ON Connect on-board 5V supply to JTAG port (supports powering

board from JTAG pod supporting 5V supply output)

OFF Disconnect on-board 5V supply to JTAG port

J15 OSJTAG bootloader

selection

ON OSJTAG bootloader mode (OSJTAG firmware reprogramming)

OFF Debugger mode

J16 VREG IN selection

1-2 Regulator powered by OSJTAG 5V output

5-6 VBUS signal on Micro-USB connector J19 connects to VREGIN to

allow stand-alone USB operation

6-8 VBUS signal from elevator connector connects to VREGIN to allow

USB operation with complete tower kit

J17 Board power selection

1-2 K20 USB regulator 3.3V output powers VBRD (MCU_PWR)

3-5 3.3V from on-board regulator powers VBRD (MCU_PWR)

5-7 1.8V from on-board regulator powers VBRD (MCU_PWR)

TOWER SYSTEM

Jumper

Option

Setting

Description

J2 USB power enable

ON Connect PTC9 to USB power enable on power switch MIC2026

OFF Disconnect PTC9 to USB power enable on power switch MIC2026

J20 USB over-current flag

ON Connect PTC8 to over-current flag on power switch MIC2026

OFF Disconnect PTC8 to over-current flag on power switch MIC2026

J1 Infrared transmitter

connection

ON Connect CMT_IRO (PTD7) to infrared transmitter D1

OFF Disconnect CMT_IRO (PTD7) to infrared transmitter D1

J3 Infrared receiver

connection

ON Connect CMP0_IN1 (PTC7) to infrared receiver Q1

OFF Disconnect CMP0_IN1 (PTC7) to infrared receiver Q1

J25 Accelerometer I2C

connection

ON Connect PTB2 to SCL pin of accelerometer

OFF Disconnect PTB2 to SCL pin of accelerometer

J26 Accelerometer I2C

connection

ON Connect PTB3 to SDA pin of accelerometer

OFF Disconnect PTB3 to SDA pin of accelerometer

J24 Accelerometer IRQ

connection

ON Connect PTB0 to INT1 pin of accelerometer

OFF Disconnect PTB0 to INT1 pin of accelerometer

J23 Accelerometer IRQ

connection

ON Connect PTB1 to INT2 pin of accelerometer

OFF Disconnect PTB1 to INT2 pin of accelerometer

J27 Potentiometer

connection

ON Connect potentiometer to ADC1_DM0

OFF Disconnect potentiometer to ADC1_DM0

J4 Microphone connection

ON Connect microphone input to PTB0 (ADC0_SE8)

OFF Disconnect microphone input to PTB0 (ADC0_SE8)

J21 Buzzer connection

ON Connect FTM0_CH3 (PTC4) to buzzer

OFF Disconnect FTM0_CH3 (PTC4) to buzzer

For more information, visit freescale.com/Tower

Join the online Tower community at towergeeks.org

Freescale, the Freescale logo and CodeWarrior are trademarks of Freescale

semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Kinetis is a trademark of

Freescale Semiconductor, Inc. All other product or service names are the

Doc Number: TWRK20D72MQSG REV 0 Agile Number: 926-27182 REV A

Quick Start Guide

Visitfreescale.com/TWR-K20D72M or

freescale.com/Kinetis for the latest information

on the TWR-K20D72M module, including:

• Baremetallabs

• Software

• Technicaldocumentation

Support

Visitfreescale.com/support for a list of phone

numbers within your region.

Warranty

Visitfreescale.com/warranty for complete

warranty information.

Quick Start Guide

Mouser Electronics

Authorized Distributor

Click to View Pricing, Inventory, Delivery & Lifecycle Information:

Freescale Semiconductor:

TWR-K20D72M

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