AppBox D21 System User’s Guide 4
AppBox
1.0 Introduction
This document describes the features of the AppBox D21. The AppBox D21 is designed to be used in an
industrial environment with a USB, or RS-485 interface and provide flexible, modular I/O (AppIO) for specific
applications. These AppIO Modules allow customized solutions to be integrated for a wide variety of
applications that need to go into a USB or RS-485 communications environment.
1.1 Features
This AppBox D21 has the following features:
Atmel ATSAMD21J18A processor (ARM Cortex-M0+), maximum frequency 48 MHz.
Operates on +12 to +24 volts DC, uses less than 500 Ma. at +12V
USB interface for industrial computer systems
RS485 communications for industrial systems
Communication interface expansion via Distribution Box (sold separately)
Modular I/O expansion via up to three (3) AppIO Modules, Atmel X PLAINED compatible
Fully enclosed system with knock out panels for AppIO Modules (sold separately)
Convenient enclosure mounting holes
Vented enclosure for cooling
Front panel push button switch
Front panel programmable LED
Atmel-ICE debug header present for development
Operates 0 - +70C
D21 CPU BOARD
AppIO
Module #1
AppIO
Module #3
AppIO
Module #2
RS485
Power
+12-24 VDC
Interface #3
Interface #1
Interface #2
User Defined
AppBox D21 Block Diagram
LED
Push
Button
Switch
Comms
Select
Switch
ATSAMD21J18A
uP
USB
Atmel-ICE
Header
LED1
SW1
J2
J1
J3
EXT1
EXT2
EXT3
