Freescale Semiconductor TWR-KL25Z User guide

TWR-KL25Z Tower Module

User Manual

TWR-KL25Z-UM

Rev. 1.0

Freescale

Table of Contents

1 TWR-KL25Z ............................................................................................................................................... 3

2 Contents ...................................................................................................................................................... 4

3 TWR-KL25Z Features ............................................................................................................................. 4

4 Get to Know the TWR-KL25Z ............................................................................................................... 5

5 Reference Documents ............................................................................................................................ 6

6 Hardware description ............................................................................................................................ 6

6.1 Block Diagram ...................................................................................................................................................................... 6

6.2 Microcontroller .................................................................................................................................................................... 7

6.3 Clocking ................................................................................................................................................................................... 8

6.4 System Power ....................................................................................................................................................................... 9

6.5 Real Time Clock (RTC) ...................................................................................................................................................... 9

6.6 Debug Interface ................................................................................................................................................................... 9

6.6.1 OpenSDA ................................................................................................................................................................................................ 9

6.6.2 Cortex Debug SWD Connector ...................................................................................................................................................... 9

6.7 Infrared Port ...................................................................................................................................................................... 10

6.8 Accelerometer ................................................................................................................................................................... 10

6.9 General Purpose Tower Plug-in (TWRPI) Socket ............................................................................................... 10

6.10 Potentiometer, Pushbuttons, LEDs ........................................................................................................................ 11

6.11 Touch Interface .............................................................................................................................................................. 11

6.12 USB ...................................................................................................................................................................................... 12

7 TWR-KL25Z Jumper options ............................................................................................................. 13

8 Useful links ............................................................................................................................................. 15

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1 TWR-KL25Z

The TWR-KL25Z microcontroller module is designed to work either in standalone mode or as part of the
Freescale Tower System, a modular development platform that enables rapid prototyping and tool re-use
through reconfigurable hardware. Take your design to the next level and begin constructing your Tower
System today by visiting www.freescale.com/tower for additional Tower System microcontroller modules
and compatible peripherals. For TWR-KL25Z specific information and updates visit

www.freescale.com/TWR-KL25Z

Figure 1 Freescale Tower System Overview

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2 Contents

The TWR-KL25Z contents include:

 TWR-KL25Z board assembly
 3ft A to mini-B USB cable for debug interface and power
 3ft A to micro-B USB cable for MKL25Z128VLK4 USB interface
 Micro-B to A adapter for MKL25Z128VLK4 USB Host applications
 Quick Start Guide

3 TWR-KL25Z Features

 Tower compatible microcontroller module
 MKL25Z128VLK4 MCU (48 MHz, 128KB Flash, 16 KB RAM, Low power, 80LQFP package
 Dual role USB interface with Micro-AB USB connector
 Touch Tower Plug-in Socket
 General purpose Tower Plug-in (TWRPI) socket
 On-board debug circuit MK20 openSDA serial debug interface with virtual serial port and mass storage device

bootloader

 Three axis accelerometer (MMA8451Q)
 Four (4) user-controllable LEDs
 Two (2) capacitive touch pads
 Two (2) user pushbutton switches
 Infrared transmit and receive
 Potentiometer for ADC measurements
 GPIO header for prototyping

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4 Get to Know the TWR-KL25Z

Figure 2 Top side of TWR-KL25Z module

Figure 3 Bottom side of TWR-KL25Z module

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5 Reference Documents

The documents listed below should be referenced for more information on the Kinetis family, Tower System,
and MCU Modules. These can be found in the documentation section of http://www.freescale.com/TWR-KL25Z
or http://www.freescale.com/kinetis

 TWRKL25ZQSG: Quick Start Guide
 TWR-KL25Z-SCH: Schematics
 TWR-KL25Z-PWA: Design Package
 MKL25Z128VLK4 Reference Manual
 Tower Configuration Tool
 Tower Mechanical Drawing

6 Hardware description

The TWR-KL25Z is a Tower MCU Module featuring the MKL25Z128VLK4 —a Kinetis microcontroller with USB 2.0
full-speed OTG controllers in a 80 LQFP package. It is intended for use in the Freescale Tower System but can
operate stand-alone. An on-board debug circuit, openSDA, provides a JTAG interface and a power supply input
through a single USB mini-AB connector, as well as a serial to USB, CDC class compliant UART interface.

6.1 Block Diagram

Figure 4 Block Diagram of TWR-KL25Z

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