FRDM-KL27Z

The FRDM-KL27Z is an ultra-low-cost development platform for the Kinetis® L Series KL17 and KL27 MCUs built on the ARM® Cortex®-M0+ processor

Overview¶

The FRDM-KL27Z has been designed by NXP in collaboration with mbed for prototyping all sorts of devices, especially those requiring the size and price point offered by Cortex-M0+. The board is well sized for ultra-low-power applications, thanks to its power efficient Kinetis KL43 MCU featuring an ARM® Cortex®-M0+ core running up to 48MHz. The Kinetis KL27 MCU family remains fully software, hardware and development tool compatibility with Kinetis MCU and Freedom board families. It is packaged as a development board including extension headers compatible with Arduino R3 shields and includes a built-in USB Debug and Flash Programmer.

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MCU Features¶

• Kinetis MKL27Z64VLH4 in 64LQFP package
• ARM® Cortex™-M0+ 32-bit core
• 48 MHz max CPU frequency
• 64 KB program flash memory
• 16 KB RAM
• 16kb ROM with built-in bootloader
• Multiple low-power modes, low-leakage wake-up unit
• 4-channel DMA controller
• 3x Internal Reference Clocks, 2x Crystal inputs
• 3x UART modules, supporting ISO7816
• 2x SPI modules
• 2x I2C modules
• 1x FlexIO module
• 1x USB 2.0 full speed, crystal-less
• 1x segment LCD
• 1x 16-bit ADC, 1x 6-bit DAC
• 6x Timers
• Up to 51x GPIOs
• Advanced flash security

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Board Features¶

• Onboard Components
  • MMA8451Q accelerometer
  • MAG3110 magnetometer
  • Capactive touch slider
  • 2 user push-buttons
  • 1 RGB LED
  • Thermistor sensor
• Connectivity
  • Dual-role USB full-/low-speed Device controller with crystal-less feature
  • up to 3x UARTs, 2x SPIs and 1x I2C connected to Headers (multiplexed peripherals)
• Extensions
  • Headers compatible with Arduino R3 shields (32-pins / outter row)
  • Headers for proprietary shields (32-pins / inner row)
• Analog and Digital IOs (multiplexed peripherals)
  • 1x ADC 16-bit resolution with 16 Analog I/O Pins connected to Headers
  • up to three timers with 28 PWM signals accessible from Headers
  • up to two Comparator Inputs
  • up to 40 MCU I/O Pins connected to Headers (3.3v, 4mA each, 400mA max total)
• Board power-supply options (onboard 5 to 3.3V regulator)
  • USB Debug 5V
  • USB Target 5V
  • 5-9V Vin on Arduino headers
  • 5V PWR input
  • Coin-cell 3.3V
• Integrated OpenSDA USB Debug and Programming adapter
  • Several industry standard Debug interfaces (PEmicro, CMSIS-DAP, JLink)
  • Drag-n-drop MSD Flash-programming
  • Virtual USB to Serial Port
• Form factor: 3.2” x 2.1” / 81mm x 53mm
• Software Development Tools
  • mbed HDK & SDK enabled
  • Online development tools
  • Easy to use C/C++ SDK
  • Lots of published libraries and projects
  • Alternate Offline options NXP free MCUXpresso IDE and SDK library/examples

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Board Block Diagram¶

The graphic below gives an overview of the board features and the connection between the target MCU and the on-board components and connectors

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Board Pinout¶

Arduino and NXP Header Pinout¶

Freedom board headers enable up to 64-pins and give access to most of the Kinetis KL27 signals

• Outer row pins deliver right signals to meet Arduino R3 standard
• Inner row is connected to up to 32 additional Kinetis KL27 pins
  
  

The FRDM-KL27Z is fully supported in the mbed platform, so it gets access to the free tools and SDK that provides experienced embedded developers with powerful and productive tools for building proof-of-concepts. The pinout above shows the commonly used interfaces and their locations. Note that all the numbered pins (PT_XX) can also be used as DigitalIn and DigitalOut interfaces.

Pin names¶

• mbed pin-names

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PC Configuration¶

Your mbed Microcontroller can appear on your computer as a serial port. On Mac and Linux, this will happen by default. For Windows, you need to install a driver:

From a host PC to communicate with mbed you will need a terminal application. This allows the mbed Microcontroller to print to your PC screen, and for you to send characters back to your mbed.

• Terminals - Using Terminal applications to communicate between the Host PC and the mbed Micrcontroller

Some terminal programs (e.g. TeraTerm) list the available serial ports by name. However, if you do need to know the identity of the serial port so that you can attach a terminal or an application to it:

	Windows		Mac		Linux
	Find the identity of the COM port by opening ''Device Manager''. To do this navigate ''Start -> Control Panel -> System -> Hardware -> Device Manager''.		To find the device name under Mac OS X, use the command ''ls /dev/tty.usbmodem*''		To find the device name under Linux, use the command ''ls /dev/ttyACM*''

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Firmware Update¶

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Get Started with mbed¶

First board connection¶

Use the USB lead to connect your mbed to a PC. The status light will come on, indicating it has power. After a few seconds of activity, the PC will recognise the mbed Microcontroller as a standard USB drive. (Note that the drive name should be customized for FRDM-KL27Z)

Windows 7 example	Mac OS X example

Connect to mbed¶

Go to the new USB Drive, and click MBED.HTM to open it in a web browser.

If you do not have an mbed account, choose "Signup", and create your mbed Account. Otherwise, log in with your normal username and password.

This will give you access to the website, tools, libraries and documentation.

Flash a project binary¶

1. Download a (.bin) to the FRDM Platform¶

Download the appropriate "Hello World!" binary:

• NXP FRDM-KL27Z: HelloWorld_KL27Z.bin

Note: the source code for this program will be seen in the next section.

Save the program binary file to your mbed Microcontroller Disk, just like you would with a normal USB disk. The Status LED will flash as the PC writes the file to the Microcontroller disk.

2. Press the Reset Button¶

When the Reset Button in pressed, the newest program on the mbed Microcontroller Disk will be loaded in to the Microcontroller FLASH memory. The Status LED will flash as this happens.

When the program is has been loaded onto the microcontroller, it will then start it running.

3. Run Hello World!¶

The Microcontroller is now running the program; flashing LED1 forever! If you reset the Microcontroller, or disconnect and reconnect the power, the program will simply restart.

4. Flash a new precompiled program¶

It is the newest program on the mbed Microcontroller that is run after reset. We can therefore download a new program or overwrite an existing one to update the program that will run.

Open existing Project¶

1. Import the Program to your mbed compiler¶

Select Import As Program
Choose Import Name of your preference
Click on Import

2. Compile the Program¶

In the right panel Program Workspace Select the program you want to compile
Click on Compile in toolbar
If compilation ends successfully, you should see the comment Success! displayed in the Compile Output window available in the bottom and your web browser should download automatically the precompiled binary for the program.

3. Download a (.bin) to the FRDM Platform¶

Save the program binary file to your mbed Microcontroller Disk, just like you would with a normal USB disk. The Status LED will flash as the PC writes the file to the Microcontroller disk.

4. Press the Reset Button¶

When the Reset Button in pressed, the newest program on the mbed Microcontroller Disk will be loaded in to the Microcontroller FLASH memory. The Status LED will flash as this happens.

When the program is has been loaded onto the microcontroller, it will then start it running.

5. Run the Program¶

The Microcontroller is now running the program; flashing LED1 forever! If you reset the Microcontroller, or disconnect and reconnect the power, the program will simply restart.

Create new Project¶

Follow the guide to creating your own programs using the online compiler

• Create your own program

Technical Doc¶

FRDM-KL27Z Board¶

• User's Guide
• Schematic rev B

Kinetis KL27 MCU¶

• Data Sheet
• Reference Manual
• Errata
• Application Note -Generating a Fixed Number of PWM Pulses Using TPM and DMA

MMA8451Q Accelerometer¶

• Data Sheet

MAG3110 Magnetometer¶

• Data Sheet

Where to buy¶

 Buy Now