NXP Semiconductors FRDM-K28F User Manual

NXP Semiconductors
User's Guide
Freedom Board for Kinetis K28F
(FRDM-K28F)

1. Introduction

The Freedom development platform is a set of software
and hardware tools for evaluation and development. It
is ideal for rapid prototyping of MCU-based
applications. The Freedom K28 board (FRDM-K28F)
is a simple yet sophisticated design featuring the
Kinetis K series MCU built upon the ARM
®
Cortex -M4 core which features a Floating-Point Unit
(FPU).
FRDM-K28F can be used to evaluate the K27 and K28
Kinetis K series MCUs. The FRDM-K28F board
features the MK28FN2M0VMI15 MCU which features
a maximum operating frequency of 150 MHz, 2 MB
flash, 1 MB RAM, high-speed and full-speed USB
controller with available crystal-less operation,
SDRAM controller, secure digital host controller,
QuadSPI controller, and analog and digital peripherals.
The FRDM-K28F hardware is form-factor compatible
with the Arduino™ R3 pin layout, providing a broad
range of expansion board options. The on-board
interface includes a 6-axis digital accelerometer and
magnetometer, RGB LED, FlexIO socket, SD card
interface, mobile SDRAM memory, and external serial
flash memory.
© 2017 NXP B.V.
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Document Number: FRDMK28FUG
1. Introduction ........................................................................ 1
2. FRDM-K28F hardware overview ...................................... 2
3. FRDM-K28F hardware description .................................... 4
3.1. Power supply ........................................................... 4
3.2. Serial and Debug Adapter version 2 (OpenSDA
v2.2) ................................................................................ 7
4. MCU .................................................................................. 9
®
5. Clocking ........................................................................... 10
6. Universal Serial Bus (USB) ............................................. 11
7. VBAT ............................................................................... 12
8. Accelerometer and magnetometer .................................... 13
9. RGB LED......................................................................... 14
10. Serial port ......................................................................... 15
11. QuadSPI memory ............................................................. 15
12. Mobile SDRAM memory ................................................. 15
13. Secure Digital (SD) card .................................................. 15
14. FlexIO socket ................................................................... 16
15. Reset................................................................................. 17
16. Push-button switches ........................................................ 17
17. Visible light sensor ........................................................... 18
18. Debug ............................................................................... 19
19. Input/output connectors .................................................... 19
20. Arduino compatibility ...................................................... 20
21. Jumper table ..................................................................... 20
22. References ........................................................................ 21
23. Revision history ............................................................... 21
Rev. 0 , 04/2017
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