10 Automotive Applications Design Guide
LOW POWER ANALOG SOLUTIONS FOR AUTOMOTIVE APPLICATIONS
Solutions for Connectivity Applications
Connectivity within the vehicle is dominated today by two
main network protocols: CAN (Controller Area Network) and
LIN (Local Interconnect Network). CAN utilizes a robust,
high-speed protocol, usually linking major nodes or
Simple Sensor Node Using MCP2515 Standalone CAN Controller
CAN
Bus
CAN
Transceiver
Op
Amp
Sensor
8/16-bit PIC
®
Microcontroller
16-bit dsPIC
®
DSC
LDO
CAN
Controller
Development Tools
Part Number Product
DM163005 PICDEM™ LIN Demonstration Board
DM163007, DM163011, DM163015 PICDEM™ CAN-LIN 1, 2 and 3 Demonstration Boards
DV250501 MCP250XX CAN I/O Expander Developer’s Kit
DV251001 MCP2510/2515 CAN Developer’s Kit
MCP2515DM-PCTL MCP2515 CAN Controller PICtail™ Demonstration Board
SOIC8EV SOIC 8-Lead Evaluation Board
Recommended Interface Product Families for Connectivity Applications
Family Features Device Examples
CAN Controller CAN V2.0B at 1Mb/s, two receive buffers, three transmit buffers high-speed
SPI (10 MHz)
MCP2515
CAN Transceiver Implements ISO 11898-2 physical layer requirements, ±40V short-circuit
protection, ±250V transient protection
MCP2551X
CAN I/O Expander CAN V2.0B, eight general purpose I/Os, four 10-bit A/D converters, two
10-bit PWM outputs
MCP25020/25/50/55
LIN Transceiver Integrated LDO regulator (5V ±5%), supports LIN rates up to 20 Kbaud,
short-circuit and thermal overload protection
MCP201
subsystems within the vehicle, such as ABS, airbag,
powertrain and suspension control modules. LIN is a low-
speed, single-wire network that usually links nodes within
a vehicle subsystem, such as body electronics, headlight
controls and occupant detection.
Motor Control Node Using MCP201 LIN Transceiver
LIN
Bus
V
DD
8/16-bit PIC
®
Microcontroller
16-bit dsPIC
®
DSC
MOSFET
Driver
MOSFET
Motor
LIN + LDO
Automotive Applications Design Guide 11
Application Notes and Additional Documentation Available
Application
Document
Number
Title
Connectivity AN228 A CAN Physical Layer Discussion
Connectivity AN729 LIN Protocol Implementation Using PIC® MCUs
Connectivity AN754 Understanding Microchip’s CAN Module Bit Timing
Connectivity AN816 A CAN System Using Multiple MCP25025 I/O Expanders
Low-Frequency Communications/PKE AN232 Low-Frequency Magnetic Transmitter Design
Low-Frequency Communications/PKE AN238 Tire Pressure Monitoring (TPM) System
Low-Frequency Communications/PKE AN879 Using the Microchip Ultra Low-power Wake-up
Low-Frequency Communications/PKE AN959 Using the PIC16F639 MCU for Smart Wireless
Low-Frequency Communications/PKE AN1024 PKE System Design Using the PIC16F639
Low-Frequency Communications/PKE TB090 MCP2030 Three-Channel Analog Front-End
Low-Frequency Communications/PKE TB088 PIC16F639 Microcontroller Overview
Motor Control AN799 Matching MOSFET Drivers to MOSFETs
Motor Control AN894 Motor Control Sensor Feedback Circuits
Motor Control AN898 Determining MOSFET Driver Needs for Motor Drive Applications
Motor Control AN885 Brushless DC (BLDC) Motor Fundamentals
Motor Control AN857 Brushless DC Motor Control Made Easy
Motor Control AN763 Latch-Up Protection for MOSFET Drivers
Motor Control AN807 Low-Cost DC Motor Speed Control with CMOS ICs
Power Supply AN216 DC-DC Converter Controller using a PIC® Microcontroller
Power Supply AN686 Understanding and Using Supervisory Circuits
Power Supply AN761 LDO Thermal Considerations
Power Supply AN765 Using Microchip’s Micropower LDOs
Power Supply AN766 Pin-compatible CMOS Upgrades to Bipolar LDOs
Power Supply AN763 Latch-Up Protection for MOSFET Drivers
Power Supply TB081 Soft-Start for Switching Power Supplies
Power Supply TB085 A Simple Circuit for Driving Microcontroller Friendly PWM Generators
LED/Lighting AN874 Buck Configuration High-Power LED Driver
LED/Lighting AN948 Efficiently Powering Nine White LEDs with the MCP1650
LED/Lighting TB029 Complementary LED Drive
LED/Lighting TB060 Drive High Intensity White LEDs Efficiently Using the PIC16C781
LED/Lighting TB062 High-Power IR LED Driver Using the PIC16C781/782
LED/Lighting DS40040 PIC® Comparator Tips ‘n Tricks
LED/Lighting DS41215 8-pin Flash PIC® Microcontroller Tips ‘n Tricks
Sensors/Signal Chain AN251 Bridge Sensing with the MCP6S2X PGAs
Sensors/Signal Chain AN679 Temperature Sensing Technologies
Sensors/Signal Chain AN688 Layout Tips for 12-bit A/D Converter Application
Sensors/Signal Chain AN691 Optimizing the Digital Potentiometer in Precision Circuits
Sensors/Signal Chain AN695 Interfacing Pressure Sensors to Microchip’s Analog Peripherals
Sensors/Signal Chain AN699 Anti-Aliasing, Analog Filters for Data Acquisition Systems
Sensors/Signal Chain AN845 Communicating with the MCP3221 using PIC Microcontrollers
Sensors/Signal Chain AN865 Sensing Light with a Programmable Gain Amplifier
Sensors/Signal Chain AN866 Temperature Sensing with a Programmable Gain Amplifier
Sensors/Signal Chain AN981 Interfacing the MPC9700 Analog Output Temperature Sensor to a PIC® Microcontroller
Sensors/Signal Chain AN988
Interfacing the MCP9800
I
2
C™ Digital Temperature Sensor to a PIC® Microcontroller
Sensors/Signal Chain TB051 Precision Temperature Measurement using a TC1046/TC1047 Sensor and a PIC16F872
Microcontroller
LOW POWER ANALOG SOLUTIONS FOR AUTOMOTIVE APPLICATIONS
Information subject to change. The Microchip name and logo, the Microchip logo, dsPIC and PIC are registered trademarks of
Microchip Technology Incorporated in the U.S.A. and other countries. FilterLab and MXDEV are registered trademarks of Microchip
Technology Incorporated in the U.S.A. dsPICDEM, PICkit, PICDEM and PICtail are trademarks of Microchip Technology Incorporated
in the U.S.A. and other countries. All other trademarks mentioned herein are property of their respective companies. © 2009,
Microchip Technology Incorporated. All Rights Reserved. Printed in the U.S.A. 2/09
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APGRD002

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Microchip Technology
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Power Management IC Development Tools Window Lift
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