© 2017 NXP B.V.
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.
NXP Semiconductors
Document Number: FRDMK28FUG
User's Guide
Rev. 0 , 04/2017
Contents
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
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