AppBox C21 System User’s Guide 4
AppBox
1.0 Introduction
This document describes the features of the AppBox C21. The AppBox C21 is designed to be used in an
industrial environment with a CAN, RS-485, or LIN 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 CAN, RS-485, or LIN communications environment.
1.1 AppBox C21 Features
This AppBox C21 has the following features:
Atmel ATSAMC21J18A processor (ARM Cortex-M0+), maximum frequency 48 MHz.
Operates on +12 to +24 volts DC, uses less than 500 Ma. at +12
CAN interface for industrial systems
RS-485 communications for industrial systems
LIN interface for automotive 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
AppIO
Module #1
AppIO
Module #3
AppIO
Module #2
RS485/
CAN/
LIN
Power
+12-24 VDC
Interface #3
Interface #1
Interface #2
User Defined
AppBox C21 Block Diagram
LED
Push
Button
Switch
Comms
Select
Switch
Atmel-ICE
Header
ATSAMC21J18A
uP
C21 CPU BOARD
LED1
SW1
J2
J1
EXT1
EXT2
EXT3