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MCP401XEV Evaluation Board User’s Guide

DS51888A-page 10

©

2010 Microchip Technology Inc.

FIGURE 1-1:

MCP401XEV Evaluation Board Using the SC70EV Evaluation Board (MCP40D18

installed in U1).

1.3

WHAT THE MCP401XEV EVALUATION BOARD KIT INCLUDES

This MCP401XEV Evaluation Board kit includes:

• MCP401XEV Evaluation Board

• One SC70EV Blank PCB, 102-00273.

Extra blank PCBs can be ordered (order #: SC70EV)

• Important Information Sheet

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Summary of Contents for MCP401XEV

Page 1: ...2010 Microchip Technology Inc DS51888A MCP401XEV Evaluation Board User s Guide...

Page 2: ...ochip Technology Incorporated in the U S A All other trademarks mentioned herein are property of their respective companies 2010 Microchip Technology Incorporated Printed in the U S A All Rights Reser...

Page 3: ...ion 7 2 2 Features 8 2 3 Getting Started 9 2 4 MCP401XEV Evaluation Board Description 9 2 5 Configuring The PICkit Serial Analyzer 13 2 6 MCP40D18EV Demo Steps 23 Appendix A Schematic and Layouts A 1...

Page 4: ...MCP401XEV Evaluation Board User s Guide DS51888A page 4 2010 Microchip Technology Inc NOTES...

Page 5: ...d Appendix A Schematic and Layouts Shows the schematic and layout diagrams for the MCP401XEV Evaluation Board Appendix B Bill of Materials BOM Lists the parts used to build the MCP401XEV Evaluation Bo...

Page 6: ...is the only compiler Initial caps A window the Output window A dialog the Settings dialog A menu selection select Enable Programmer Quotes A field name in a window or dialog Save project before build...

Page 7: ...ses and archived software General Technical Support Frequently Asked Questions FAQs technical support requests online discussion groups Microchip consultant program member listing Business of Microchi...

Page 8: ...MCP401XEV Evaluation Board User s Guide DS51888A page 8 2010 Microchip Technology Inc DOCUMENT REVISION HISTORY Revision A January 2010 Initial Release of this Document...

Page 9: ...Board allows the system designer to quickly evaluate the operation of Microchip Technology s MCP40D18 Digital Potentiometer device This device is similar to the following devices MCP40D17 MCP40D19 MCP...

Page 10: ...luation Board Using the SC70EV Evaluation Board MCP40D18 installed in U1 1 3 WHAT THE MCP401XEV EVALUATION BOARD KIT INCLUDES This MCP401XEV Evaluation Board kit includes MCP401XEV Evaluation Board On...

Page 11: ...XEV Evaluation board uses the generic SC70EV Evaluation Board PCB and includes a second blank PCB Additional PCB may be ordered order number SC70EV The SC70EV kit includes 5 blank PCBs Other boards ca...

Page 12: ...for device pin connected to VDD Silk screen area to write specifics of implemented circuit on back of PCB such as MCP4018 10 k PICkit Serial Analyzer Header The included SC70EV Board has the following...

Page 13: ...and has a device slave I2C address 7Ch using the PICkit Serial Analyzer or by jumpering the board into their application system The PICkit Serial Analyzer is available separately order number DV164122...

Page 14: ...R2U R2D 0 P7 R7U R7D P8 R8U 0 R8D SOT 23 6 1 2 1 2 3 6 5 4 P1 P2 P3 P8 P7 P6 Note 1 The SC70 VDD SOT 23 VSS signal is connected to the DIP 8 VDD VSS signal and the SC70 VSS SOT 23 VDD signal is conne...

Page 15: ...Component Placement Using the SC70EV Evaluation Board Top 0 Through hole Test Point Orange Two Blue Wire Jumpers to connect PICkit Serial interface to device pins MCP40D18 103AE LT installed in U1 SC...

Page 16: ...2 All passive components use the surface mount 805 footprint TABLE 2 2 OPTIONAL PASSIVE COMPONENTS NOT INSTALLED 2 Component Comment C1 C2 Power supply bypass capacitors 3 R2U R3U R4U R5U R6U R7U Pull...

Page 17: ...s started The Transaction window indicates if the PICkit Serial GUI located the PICkit Serial Analyzer Hardware When starting the PICkit Serial Analyzer for the 1st time some setup questions may be as...

Page 18: ...eed to select the PICkit Serial Analyzer GUI to be in I2 C Master mode Figure 2 4 shows how to select the proper mode Select PICkit Serial Analyzer Select Communications Mode I2C Master menu item make...

Page 19: ...page 19 Now we need to configure the mode that we have selected Figure 2 5 shows how to select the communications mode Select PICkit Serial Analyzer Configure Communications Mode menu item This will...

Page 20: ...Microchip Technology Inc Figure 2 6 shows the Configure Communications Mode window Ensure that your window options and settings are the same as in this window and then select the Save Changes button...

Page 21: ...A page 21 Now we are going to create some custom scripts to match the MCP40D18 read and write commands To open the Script Builder window select the Communications Script Script Builder menu item see F...

Page 22: ...Technology Inc This will open the Script Builder window Figure 2 8 In this window we see five Example I2 C Master Scripts We will use the ReadAddrA8 and WriteAddrA8 Example Script Files to create our...

Page 23: ...f bytes that will be written The second byte is the I2 C Slave address A8h of the device with the Read Write bit forced to 0 an I2 C write The next two bytes 02h and 33h are data bytes and these value...

Page 24: ...protocol format and the desired operation Now a I2C Restart bit is forced onto the I2C bus The next byte 01h indicates how many bytes will be written The next bit A9h is the I2C Slave address A8h of t...

Page 25: ...n click on the Save Script button This will save the script which can then be accessed under the User I2CM Script column see Figure 2 11 This script will be available when the GUI is opened in the fut...

Page 26: ...lick on the Save Script button This will save the script which can then be accessed under the User I2CM Script column see Figure 2 11 This script will be available when the GUI is opened in the future...

Page 27: ...on of the script 11 Select the MCP40D18_Read script in the User I2CM Scripts column It should look like Figure 2 14 12 Click on the Execute Script button This executes the script shown in the script d...

Page 28: ...EV Evaluation Board User s Guide DS51888A page 28 2010 Microchip Technology Inc FIGURE 2 13 MCP40D18 Write Script File Updating Wiper Value FIGURE 2 14 MCP40D18 Read Script File Data value to write to...

Page 29: ...S51888A page 29 FIGURE 2 15 MCP40D18 Transaction Windows 1 and 2 FIGURE 2 16 MCP40D18 Transaction Windows 3 and 4 Data value writen to Wiper register Data value read from Wiper register Data value wri...

Page 30: ...p Down interface MCP4013 Yes SOT 23 6 uses Up Down interface MCP4014 Yes SOT 23 5 uses Up Down interface MCP4017 Yes MCP40D17 Yes MCP4018 Yes MCP40D18 Yes MCP4019 Yes MCP40D19 Yes MCP4022 Yes SOT 23 6...

Page 31: ...tion Board Diagrams included in this appendix Board Schematic Board Top Trace Silk and Pads Board Bottom Trace Pads Board Layer 2 Ground Plane Board Layer 3 Power Plane Board Bottom Silk Trace and Pad...

Page 32: ...MCP401XEV Evaluation Board User s Guide DS51888A page 32 2010 Microchip Technology Inc A 3 BOARD SCHEMATIC M...

Page 33: ...Schematic and Layouts 2010 Microchip Technology Inc DS51888A page 33 A 4 BOARD TOP TRACE SILK AND PADS...

Page 34: ...MCP401XEV Evaluation Board User s Guide DS51888A page 34 2010 Microchip Technology Inc A 5 BOARD BOTTOM TRACE PADS...

Page 35: ...Schematic and Layouts 2010 Microchip Technology Inc DS51888A page 35 A 6 BOARD LAYER 2 GROUND PLANE...

Page 36: ...MCP401XEV Evaluation Board User s Guide DS51888A page 36 2010 Microchip Technology Inc A 7 BOARD LAYER 3 POWER PLANE...

Page 37: ...Schematic and Layouts 2010 Microchip Technology Inc DS51888A page 37 A 8 BOARD BOTTOM SILK TRACE AND PADS...

Page 38: ...MCP401XEV Evaluation Board User s Guide DS51888A page 38 2010 Microchip Technology Inc NOTES...

Page 39: ...OHM 1 8W 5 0805 SMD Panasonic ECG ERJ 6GEY0R00V 1 U1 7 Bit Single I2C with Command Code Digital POT with Volatile Memory in SC70 Microchip Technology Inc MCP40D18 103AE LT 1 Blue Wire J1 SCL via to P...

Page 40: ...86 21 5407 5066 China Shenyang Tel 86 24 2334 2829 Fax 86 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 Xian Tel 86 29...

Page 41: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Microchip MCP401XEV...

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