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01/27/15
Microchip Technology Inc. • 2355 West Chandler Blvd. • Chandler, AZ 85224-6199
www.microchip.com
The Microchip name and logo, the Microchip logo, and MPLAB are registered trademarks of Microchip Technology
Incorporated in the U.S.A. and other countries. All other trademarks mentioned herein are property of their respective
companies. © 2015, Microchip Technology Incorporated, Printed in the U.S.A. All Rights Reserved. 06/15
DS40001798A
The PICDEM™ Lab II Development Board Layout
and Schematic Information Sheet
Overview
The PICDEM™ Lab II Development Board Layout and Schematic can be found on the
Microchip web site:
www.microchip.com/picdemlabII
This board provides hardware design flexibility for experimentation through a variety of
DIP microcontroller sockets coupled with a solderless breadboard. It also includes two
fixed and one variable power supply, plus a USB to Serial/I
2
C™ converter. Additionally,
it features a USB mini-B connector, two open format connectors (one for expansion, one
for an LCD module), and a pair of mikroBUS™ host connectors to accommodate a
variety of plug-in modules. The PICDEM Lab II is fully compatible with MPLAB
®
Code
Configurator and MPLAB
®
X v3.05 or later.
Board Power-Up
On-board power consists of two fixed voltages and one variable voltage. The two fixed
voltages are 5.0V and 3.3V and the variable supply can produce 1.2V to 4.5V. All three
power supplies can be powered from the 9V barrel connector, the USB voltage from the
USB-Serial/I
2
C™, or supplied via four test points (TP1 and TP2 for 5V, TP3 and TP4 for
3.3V).
Using USB power, the 3.3V and 5.0V supplies are limited to 100 mA. Using the 9V
supply, both 3.3V and 5.0V are capable of 0.75A. Using external supplies, the board is
limited to the external supplies limit, however, a maximum of a 3.0A to 5.0A limit is
imposed on the breadboard contacts.
Out of the Box Labs
A complete selection of parts and wires for four individual labs are included with the
PICDEM™ Lab II board:
• A Hello World LED Project
• An IR Remote Control Link
• A Power Converter Project
• A Class D Audio Amplifier
The lab manuals and additional labs are available on the Microchip web site:
www.microchip.com/picdemlabII.
Board Layout
The PICDEM™ Lab II Development Board is shown in Figure 1.
The 28/40-pin socket, the 8/14/20-pin socket, the 18-pin socket and 8-pin socket are
provided for connecting DIP package microcontrollers to the corresponding ICSP™
programming/debugging connectors ICSP4, ICSP3, ICSP2 and ICSP1.
Jumpers 2 and 6 control the source of the 3.3V and 5.0V input.
Note:
The recommended wire diameter for the white breadboard is AWG 22-29.