Document Number: TWRKL28ZUG NXP Semiconductors User s Guide Rev. 0 , 06/2016 TWR-KL28Z Users Guide 1. Introduction Contents The Tower development platform is a set of software 1. Introduction .................................................................... 1 2. Getting Started ................................................................ 2 and hardware tools for evaluation and development. It is 3. TWR-KL28Z Features ..................................................... 2 an ideal tool for the rapid prototyping of 4. TWR-KL28Z Hardware Description ................................ 4 microcontroller-based applications. 4.1. Power supply ........................................................ 4 4.2. Serial and debug adapter (OpenSDA) .................... 5 The TWR-KL28Z supports power supply voltage range 4.3. Microcontroller ..................................................... 6 4.4. Capacitive touch pad ............................................. 9 from 1.71 V to 3.6 V. It features a KL28Z, a device 4.5. I2C Accelerometer Sensor ..................................... 9 boasting a maximum operating frequency of 72 MHz, 4.6. LED ................................................................... 11 up to 512 KB Flash and numerous analog and digital 4.7. Analog reference voltage..................................... 11 4.8. Input/output headers............................................ 12 peripherals. 5. References .................................................................... 13 6. Revision History ........................................................... 13 The TWR-KL28Z includes the ARM open standard embedded serial and debug adapter known as CMSIS- DAP. This circuit offers the user several options for serial communications, flash programming, and run- control debugging. The TWR-KL28Z microcontroller module is designed to work either in standalone mode or as part of the Tower System, a modular development platform that enables rapid prototyping and tool re-use through reconfigurable hardware. 2016 NXP B.V. TWR-KL28Z Features It can provide a broad range of expansion board options. The on-board interfaces include LED, a 3-axis digital sensor (3D accelerometer), and two capacitive touch pads. There are many software development tool options available to the user. Choices include Kinetis Design Studio (KDS), IAR Embedded Workbench, Keil MDK featuring the Vision IDE, and so on. All of these features combine to give users the Tower needed to rapidly prototype many embedded designs: a powerful microcontroller built on a very low-power core and SOC platform, easy-access to I/O with a large ecosystem of compatible hardware, a flexible programming and debug interface, and a large ecosystem of software development environments. 2. Getting Started Refer to the TWR-KL28Z Quick Start Package for step-by-step instructions for getting started with the freedom board. See the Jump Start Your Design section at nxp.com/FREDEVPLA for the Quick Start Package and software lab guides. 3. TWR-KL28Z Features The TWR-KL28Z hardware is a Tower development board assembled with the following features: MKL28Z512VLL7 MCU (72 MHz, 512 KB Flash, 128 KB RAM, 32 KB ROM,100 LQFP package) 3-Axis Digital Accelerometer, MMA8451Q On-board serial and debug adapter I/O headers for easy access to MCU I/O pins Flexible power supply options :USB, coin cell battery, external source Capacitive touch pad Reset push button NMI and LLWU buttons LEDs The FRDM-KL28Z features two MCUs: The target MCU is the MKL28Z512VLL7. The CMSIS-DAP MCU is the MK20DX128VFM5. Figure 1 shows a block diagram of the TWR-KL28Z board. The primary components and their location on the hardware assembly are pointed out in Figure 2. TWR-KL28Z Users Guide, Rev. 0, 06/2016 2 NXP Semiconductors