©
2009 Microchip Technology Inc.
DS51793A
MCP3421 SOT23-6
Evaluation Board
User’s Guide
Page 1: ...2009 Microchip Technology Inc DS51793A MCP3421 SOT23 6 Evaluation Board User s Guide...
Page 2: ...hnology Incorporated in the U S A All other trademarks mentioned herein are property of their respective companies 2009 Microchip Technology Incorporated Printed in the U S A All Rights Reserved Print...
Page 3: ...Customer Support 3 Document Revision History 4 Chapter 1 Quick Start Instructions 1 1 Introduction 5 1 2 Description of the MCP3421 SOT23 6 Evaluation Board 5 1 3 Getting Started with PICkit Serial A...
Page 4: ...MCP3421 SOT23 6 Evaluation Board User s Guide DS51793A page iv 2009 Microchip Technology Inc NOTES...
Page 5: ...nalyzer Appendix A Schematic and Layouts shows the schematic and layout diagrams for the MCP3421 SOT23 6 Evaluation Board Appendix B Bill Of Materials BOM lists the parts used to build the MCP3421 SOT...
Page 6: ...Bold characters A dialog button Click OK A tab Click the Power tab N Rnnnn A number in verilog format where N is the total number of digits R is the radix and n is a digit 4 b0010 2 hF1 Text in angle...
Page 7: ...ollowing information Product Support Data sheets and errata application notes and sample programs design resources user s guides and hardware support documents latest software releases and archived so...
Page 8: ...MCP3421 SOT23 6 Evaluation Board User s Guide DS51793A page 4 2009 Microchip Technology Inc DOCUMENT REVISION HISTORY Revision A January 2009 Initial Release of this Document...
Page 9: ...ial Analyzer s PC graphic user interface GUI provides the user s interface for writing configuration register bits of the MCP3421 and displays the ADC conversion values The PICkit Serial Analyzer link...
Page 10: ...MCP3421 SOT23 6 Evaluation Board User s Guide DS51793A page 6 2009 Microchip Technology Inc FIGURE 1 1 Front and Back Views of the MCP3421 SOT23 6 Evaluation Board...
Page 11: ...sed pin example VIN to VSS 7 Use the PICkit Serial Analyzer PC GUI to send I2C write and read commands See Section 1 3 2 1 Creating a Script File for Configuration Byte Writing 8 Execute the PICkit Se...
Page 12: ...Microchip Technology Inc FIGURE 1 2 MCP3421 SOT23 6 Evaluation Board with the PICkit Serial Analyzer PICkit Serial Analyzer MCP3421 Evaluation Board USB Cable Connected between the and Personal Comput...
Page 13: ...ion Board and read the ADC conversion results 1 Install the PICkit Serial Analyzer software onto your personal computer PC 2 Connect the USB cable between the PICkit Serial Analyzer and your PC 3 Run...
Page 14: ...t No on Enable Pull ups and click the Next button FIGURE 1 6 Step 3 Device Pullups Window Note The MCP3421 device supports the I2 C bus data rate up to 3 4 MHz but the current version of the PICkit Se...
Page 15: ...Volt as shown below the MCP3421 SOT23 6 Evaluation Board is powered by the 5V DC from the PICkit Serial Analyzer through the JP1 jumper In this case make sure that the JP1 jumper on the MCP3421 SOT23...
Page 16: ...9 Microchip Technology Inc 8 Click the OK button You have made all of the PICkit Serial Analyzer configura tion set ups You are now ready to program the MCP3421 SOT23 6 Evaluation Board using the PICk...
Page 17: ...order to make a communication between the PICkit Serial Analyzer and the MCP3421 SOT23 6 Evaluation Board a script file is needed The following procedure shows how to create script files and how to us...
Page 18: ...e Script Detail box select the item in the parameter box 2 Right click the mouse button and an option box appears to the right of your selection displaying the options that are available for the param...
Page 19: ...means there are two bytes to send 1st Write Byte Address byte with W R bit 1101 0000 2nd Write Byte 1001 1100 Note All 6 parameters above must be listed in the same order as shown here The parameter a...
Page 20: ...Technology Inc FIGURE 1 11 Script File Example for the I2 C Write Command 2 Bytes to send Address Byte Configuration Byte 9C Note that the 9C in the configuration byte selects the following options C...
Page 21: ...this point the PICkit Serial transmits the I2C Write Command to the MCP3421 device The saved file name will appear in Users I2C Scripts column and can be re used any time by selecting the file name No...
Page 22: ...he Script Detail column with options The list of options will appear if you click the right mouse button at the parameter box You can delete the parameter box or add a new one Make sure you have the S...
Page 23: ...ial transmits the I2 C Read Command to the MCP3421 device The saved file name will appear in Users I2C Scripts column and can be re used any time by selecting the file name Note When you click on the...
Page 24: ...307V See Figure 1 15 for waveforms 5th Byte Repeated Byte for Configuration byte 4th byte Configuration Byte note that RDYbit is 0 3rd byte Data Byte 2nd byte Data Byte 1st byte Data Byte Output code...
Page 25: ...4th byte the RDY bit becomes 1 in the 5th byte repeated byte This means the device is now in the process of a new conversion and the latest conversion result is not ready yet Zoom in Data Bytes 0101A...
Page 26: ...MCP3421 SOT23 6 Evaluation Board User s Guide DS51793A page 22 2009 Microchip Technology Inc NOTES...
Page 27: ...ip Technology Inc DS51793A page 23 Appendix A Schematic and Layouts A 1 INTRODUCTION This appendix contains the following schematics and layouts for the MCP3421 SOT23 6 Evaluation Board Board Schemati...
Page 28: ...MCP3421 SOT23 6 Evaluation Board User s Guide DS51793A page 24 2009 Microchip Technology Inc A 2 BOARD SCHEMATIC...
Page 29: ...Schematic and Layouts 2009 Microchip Technology Inc DS51793A page 25 A 3 BOARD TOP LAYER...
Page 30: ...MCP3421 SOT23 6 Evaluation Board User s Guide DS51793A page 26 2009 Microchip Technology Inc A 4 BOARD TOP METAL LAYER...
Page 31: ...Schematic and Layouts 2009 Microchip Technology Inc DS51793A page 27 A 5 BOARD BOTTOM METAL LAYER...
Page 32: ...MCP3421 SOT23 6 Evaluation Board User s Guide DS51793A page 28 2009 Microchip Technology Inc NOTES...
Page 33: ...A TIN Molex Waldom Electronics Corp 22 05 2061 1 PCB RoHS Compliant Bare PCB MCP3421EV 104 00124 2 R1 R3 RES 4 99K OHM 1 8W 1 0805 SMD Panasonic ECG ERJ 6ENF4991V 2 R2 R4 DO NOT POPULATE 1 R5 RES 470...
Page 34: ...24 2334 2393 China Shenzhen Tel 86 755 8203 2660 Fax 86 755 8203 1760 China Wuhan Tel 86 27 5980 5300 Fax 86 27 5980 5118 China Xiamen Tel 86 592 2388138 Fax 86 592 2388130 China Xian Tel 86 29 8833 7...
Page 35: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Microchip MCP3421EV...
