NXP Semiconductors Freescale TWR-POS-K81 Bedienungsanleitung

TWR-POS-K81

Quick Start Guide

Development Kit for Point-of-Sale

Applications using the Kinetis K81 MCU

Tower System

Development

Platform

Quick Start Guide

Get to Know the TWR-POS-K81

Figure 1: Front side of TWR-POS-K81

SW1

Reset

SW2

NMI/PTA4

D1–D4

LEDs

Character

Segment LCD

Capacitive

Touch PIN Pad

freescale.com

TWR-POS-K81

Tower System Development Platform

The TWR-POS-K81 development platform is a reference platform for a

payment PIN entry device. This board includes Cirque SecureSense AFE

for secure PIN entry. The design files and associated software show an

example PIN pad application that has been submitted for Payment Card

Industry (PCI) certification. The board is designed to work standalone or as

part of the Freescale Tower System.

Figure 2: Back side of TWR-POS-K81

512 Mbit Serial

Flash QuadSPI

MK81FN256VDC15

Cirque

SecureSense

AFE

K81 USB

Debug

Header

Piezo

Buzzer

Battery

Receptacle

for VBAT

Quick Start Guide

TWR-POS-K81 Features

• MK81FN256VDC15 MCU

150 MHz ARM®Cortex®-M4 core,

256KB Flash, 256 KB SRAM, 121

XFBGA, with tamper detection and

crypto hardware acceleration

• Tower compatible processor board and

POS reference design

• 20-pin Cortex JTAG connector

• 512 Mbit Twin-Quad On-board QuadSPI

memory @ 3.3V

• 256 Kbit SPI EEPROM

• Cirque secure touch sensor for PIN pad

control

• Capacitive PIN pad

• 2x16 character, dot matrix LCD display

• Four (4) user-controlled status LEDs

• One (1) mechanical push button for reset

• One (1) mechanical push button for non-

maskable interrupt (NMI) or pin interrupt

• Standalone full-speed USB host and

device function

• 3.3V regulator for VDD and VDDIO_E

voltage domains

• Independent, battery-operated power

supply for real-time clock (RTC) module

• Piezo buzzer

Expanded Software and Tools

Now Available for Kinetis MCUs

Documentation and software specific to

the TWR-POS-K81 platform is monitored

and available only through a secure

download process. To request access,

please contact your sales representative

or fill out a contact form at

freescale.com/TWR-POS-K81.

Supporting software and tools for

Kinetis MCUs are available online:

• Kinetis Design Studio IDE at

freescale.com/kds

• Bootloader for Kinetis MCUs at

freescale.com/kboot

freescale.com

Step-by-Step Installation Instructions

In this Quick Start Guide, you will learn how to set up the TWR-POS-K81 board and

run the included demonstrated software.

1Download Software

and Tools

Download and install the KSDK for TWR-

POS-K81 software. See expanded software

and tools now available for Kinetis MCUs

section for information on how to get access

to the software if you do not have it already.

2Configure

the Hardware

Connect one end of the USB cable to

the PC and the other end to micro-AB

connector (J55) on the TWR-POS-K81

board. Allow the PC to automatically

configure the USB drivers if needed.

3Connect

a Terminal

Open a terminal emulator program of your

choice (TeraTerm, HyperTerm, etc.) and

connect to the board using the enumerated

Virtual COM port as shown below. If you

don’t see an option for the Virtual COM

port, then follow the directions at the end

of this document to install the driver.

NOTE: The number for the COM port can vary.

NOTE: Any previously active connection should be

terminated before plugging in the board. Failure to

do this may result in the COM port not showing up.

Quick Start Guide

Step-by-Step Installation Instructions (cont.)

4Configure

the Terminal

Setup the terminal for 115200 8-N-1

communication with no flow control:

5Enter PIN

Entry Mode

Press any key in the terminal window to

place the system into PIN entry mode.

6Enter a

4-Digit PIN

Use the capacitive PIN pad on the board

to input any 4-digit value. Press the “Enter”

button on the PIN pad when complete.

7View

Results

The encrypted PIN block information

will be displayed on the terminal.

Example below.

freescale.com

Jumper Option Setting Description

J50 Main 5V Power

Selection

2-4 Use 5V from USB connector (5V0_K81_USB)

3-4 Use 5V supply from elevator (P5V_ELEV)

J51

K81 3.3V

Regulator Source

Selection

3-4 Use 5V from USB connector (5V0_K81_USB)

4-6 Use 5V supply from elevator (P5V_ELEV)

2-4 Use elevator USB0_VBUS

J54 3.3V Board Power

Selection

3-4 Use on-board 3.3V regulator

2-4 Use K81 3.3V regulator

J56 USB Source

Selection

1-2 Use micro USB on TWR-POS-K81

2-3 Use TWR USB pins

J57, 1-3 Tamper1-Tamper3

Connection

ON Tamper 1 and Tamper 3 signals are connected

(close active tamper loop)

OFF Tamper 1 and Tamper 3 signals are disconnected

(open active tamper loop)

TWR-POS-K81 Jumper Options

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

indicated in the shaded boxes.

Quick Start Guide

Jumper Option Setting Description

J57, 2-4 Tamper0-Tamper2

Connection

ON Tamper 0 and Tamper 2 signals are connected

(close active tamper loop)

OFF Tamper 0 and Tamper 2 signals are disconnected

(open active tamper loop)

J57, 5-7 Tamper5-Tamper7

Connection

ON Tamper 5 and Tamper 7 signals are connected

(close active tamper loop)

OFF Tamper 5 and Tamper 7 signals are disconnected

(open active tamper loop)

J57, 7-8 Tamper4-Tamper6

Connection

ON Tamper 4 and Tamper 6 signals are connected

(close active tamper loop)

OFF Tamper 4 and Tamper 6 signals are disconnected

(open active tamper loop)

TWR-POS-K81 Jumper Options (cont.)

freescale.com

Virtual COM Port Driver Installation Instructions

1Find the MSD_CDC_

Device in the Device

Manager

2Click “Update Driver

Software…”

3Choose

“Browse...”

Then Select “Let me pick…”

Quick Start Guide

Virtual COM Port Driver Installation Instructions

(cont.)

4Navigate to Your CDC

Driver Location

<install_dir>\examples\frdmk82f\demo_

apps\usb\device\cdc\virtual_com\inf

5Press

“Next”

6Ignore the Warning and

Press “Yes”

NOTE: If you run into driver signature issue on

Windows 8, please refer to the link below: https://

learn.sparkfun.com/tutorials/ disabling-driver-

signature-onwindows-8/disabling-signed-

driverenforcement-on-windows-8.

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