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2 References documents
The table below provides a list of reference documents for the FRDM-K20D50M hardware. All of these
documents are available online at www.freescale.com/ FRDM-K20D50M.
Table 1. FRDM-K20D50M Reference Documents
Filename Description
FRDM-K20D50M Quick Start
Package Quick Start Guide and supporting files for getting started with
the
FRDM-K20D50M .
FRDM-K20D50M User’s Manual This document—overview and detailed information for the
FRDM-K20D50M hardware.
FRDM-K20D50M Pinouts Spreadsheet of pin connections for all MCU pins. Includes
pinout for the I/O headers, Arduino R3 compatibility chart,
and OpenSDA MCU pinout.
FRDM-K20D50M Schematics PDF schematics for the FRDM-K20D50M hardware
FRDM-K20D50M Design Package Zip file containing all design source files for the FRDM-
K20D50M hardware
OpenSDA User’s Guide Overview and instructions for use of the OpenSDA embedded
3 Getting started
Refer to the FRDM-K20D50M Quick Start Package for step-by-step instructions for getting started with the
FRDM-K20D50M . See the Jump Start Your Design section onwww.freescale.com/FRDM-K20D50M for the Quick
Start Package and software lab guides.
4 FRDM-K20D50M Hardware Overview

Arduino R3 compatibility

MK20DX128VLH5 MCU (50 MHz, 128KB Flash, 16 KB RAM, 32 KB FlexNVM,
Low power, 64LQFP package

Dual role USB interface with mini-B USB connector

Open SDA

Capacitive touch slider
 Ambient light sensor

MMA8451Q accelerometer

Tri-color (RGB) LED

Flexible power supply options – USB, coin cell battery, external source

Battery-ready, power-measurement access points

Easy access to MCU I/O via Arduino ™ R3 compatible I/O connectors