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MCP42XX PICtail™ Plus Daughter Board User’s Guide

DS51759A-page 36

©

2008 Microchip Technology Inc.

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Содержание MCP42XX

Страница 1: ...2008 Microchip Technology Inc DS51759A MCP42XX PICtail Plus Daughter Board User s Guide...

Страница 2: ...hnology Incorporated in the U S A All other trademarks mentioned herein are property of their respective companies 2008 Microchip Technology Incorporated Printed in the U S A All Rights Reserved Print...

Страница 3: ...XX PICtail Plus Daughter Board Kit includes 7 Chapter 2 Installation and Operation 2 1 Introduction 9 2 2 Features 9 2 3 Getting Started 10 2 4 Explorer 16 Daughter Demo Board Demos 14 Appendix A Sche...

Страница 4: ...MCP42XX PICtail Plus Daughter Board User s Guide DS51759A page iv 2008 Microchip Technology Inc NOTES...

Страница 5: ...tic and layout diagrams for the MCP42XX PICtail Plus Daughter Board User s Guide Appendix B Bill Of Materials BOM Lists the parts used to build the MCP42XX PICtail Plus Daughter Board User s Guide App...

Страница 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...

Страница 7: ...ng 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 software...

Страница 8: ...MCP42XX PICtail Plus Daughter Board User s Guide DS51759A page 4 2008 Microchip Technology Inc NOTES...

Страница 9: ...er 16 Demo Board DM240001 PICkit Serial Analyzer DV164122 Other PICDEM Demo Board that includes a PICtail Plus female connector The use of the PIC24 Explorer 16 Demo Board DM240001 will require a tool...

Страница 10: ...can be controlled via the PICkit Serial Analyzer interface J1 or via the PICtail Plus interface J3 When using the PICtail Plus interface the CS voltages can be taken to a VIHH level for high voltage c...

Страница 11: ...power supply while connected to PICDEM board or PICkit Serial Analyzer Jumpers to allow Terminal A pins to be connected to AVDD or VAx pad Jumpers to allow Terminal B pins to be connected to VSS or VB...

Страница 12: ...MCP42XX PICtail Plus Daughter Board User s Guide DS51759A page 8 2008 Microchip Technology Inc NOTES...

Страница 13: ...r 2 2 FEATURES This board supports the following features Each digital potentiometers Terminal A pin can be individually connected to either AVDD or the corresponding VAx pad Each digital potentiomete...

Страница 14: ...AVDD R1 R2 JP3 VA1 AVDD Pin SPI Name I2 C Name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 CS SCK SDI VSS P1B P1W P1A P0A P0W P0B WP SHDN SDO VDD HVC A0 SCL SDA VSS P1B P1W P1A P0A P0W P0B WP A2 A1 VDD Pin SPI N...

Страница 15: ...d improve performance compared to powering the board via the PICtail Plus header or the PICkit Serial Analyzer The Printed Circuit Board PCB has been designed for the support of the SPI and I2 C devic...

Страница 16: ...oints JMP1 JMP3 VAx Pad AVDD Terminal A Source JMP2 JMP4 VBx Pad VSS Terminal B Source AN1 connected to W1 JP3 PIC24 AN1 pin AN1 not connected AN0 connected to W0 JP2 PIC24 AN0 pin AN0 not connected E...

Страница 17: ...Operation 2008 Microchip Technology Inc DS51759A page 13 FIGURE 2 3 MCP42XX PICtail Plus Daughter Board Layout with Default Jumper Settings Note This is the Jumper configuration that the board should...

Страница 18: ...d mode is to display the operation of High Voltage commands to Wiper 1 see Figure 2 7 This is where the CS signal is driven to 9V The program selected is determined after a reset including the Power o...

Страница 19: ...to the Explorer 16 Developers Board the jumper configuration must be verified Figure 2 4 shows the configurations of the jumpers FIGURE 2 4 MCP4XXDM PTPLS Jumper Configuration and Oscilloscope Test Po...

Страница 20: ...witch and other switches are pointed out Ensure that the MCP42XXDM PTPLS is installed in the correct orientation into the Explorer 16 Developers Board Figure 2 5 shows the location where the daughter...

Страница 21: ...lloscope as follows Time base 100 ms Division see Figure 2 6 for scope details 2 Configure the MCP42XXDM PTPLS to the jumper settings shown in Figure 2 4 3 Insert the MCP42XXDM PTPLS board into the Ex...

Страница 22: ...atile Wiper 1 register is read this value is written to the Non Volatile Wiper 1 register and then approximately a 10ms delay occurs while the NV write cycle occurs Capture will look similar to Figure...

Страница 23: ...Installation and Operation 2008 Microchip Technology Inc DS51759A page 19 FIGURE 2 6 Screen Capture of Program 1 Output Waveforms FIGURE 2 7 Screen Capture of Program 2 Non Volatile Write Waveform...

Страница 24: ...utable file Table 2 3 shows the required hardware to operate the demo TABLE 2 3 DEMO HARDWARE REQUIREMENTS Note For information on how to use the PICkit Serial Analyzer or any other aspect of the PIC...

Страница 25: ...tion is first started FIGURE 2 8 1st Screen of GUI Figure 2 9 shows the GUI box where the SPI Baud Rate is specified Clicking on the Set Baud button results in an actual Baud Rate of 9 62 kHz as shown...

Страница 26: ...te To display the data values in hexidecimal click on the Hex radial button To Chip Select the MCP42XX device click on the Disable CS button The GUI window will now look like Figure 2 11 To have acces...

Страница 27: ...latile wiper value should match the Non volatile wiper value To write to a desired register in the desired data entry box and click on the Write button Figure 2 14 shows an example of writing to the V...

Страница 28: ...MCP42XX PICtail Plus Daughter Board User s Guide DS51759A page 24 2008 Microchip Technology Inc FIGURE 2 14 Advance Screen Write Register...

Страница 29: ...gy Inc DS51759A page 25 Figure 2 15 shows the connections for the Demo using the PICkit Serial Analyzer FIGURE 2 15 PICkit Serial Analyzer Demo Jumper Configuration and Oscilloscope Test Points Channe...

Страница 30: ...The MCP42XXDM PTPLS board is now powered 7 Start the GUI application See Figure 2 8 and 8 Select a Baud rate of 9600 See Figure 2 9 and Figure 2 10 9 Under Additional Features select the Hex radial b...

Страница 31: ...If the write is to Non Volatile mem ory power down unplug the MCP42XX PICtail Plus Daughter Board and then power up to evaluate if the non volatile memory value is retained TABLE 2 4 DEMO STEPS USING...

Страница 32: ...MCP42XX PICtail Plus Daughter Board User s Guide DS51759A page 28 2008 Microchip Technology Inc NOTES...

Страница 33: ...in this appendix Board Schematic Board Top Silk screen Layer Board Top Component Plus Silk screen Board Ground Layer Board Power Layer Board Bottom Layer A 2 SCHEMATICS AND PCB LAYOUT Figure A 3 show...

Страница 34: ...MCP42XX PICtail Plus Daughter Board User s Guide DS51759A page 30 2008 Microchip Technology Inc A 3 BOARD SCHEMATIC M...

Страница 35: ...Schematic and Layouts 2008 Microchip Technology Inc DS51759A page 31 A 4 BOARD TOP SILK SCREEN LAYER...

Страница 36: ...MCP42XX PICtail Plus Daughter Board User s Guide DS51759A page 32 2008 Microchip Technology Inc A 5 BOARD TOP COMPONENTS SILK SCREEN...

Страница 37: ...Schematic and Layouts 2008 Microchip Technology Inc DS51759A page 33 A 6 BOARD GROUND LAYER...

Страница 38: ...MCP42XX PICtail Plus Daughter Board User s Guide DS51759A page 34 2008 Microchip Technology Inc A 7 BOARD POWER LAYER...

Страница 39: ...Schematic and Layouts 2008 Microchip Technology Inc DS51759A page 35 A 8 BOARD BOTTOM LAYER...

Страница 40: ...MCP42XX PICtail Plus Daughter Board User s Guide DS51759A page 36 2008 Microchip Technology Inc NOTES...

Страница 41: ...4 R5 R6 R7 R8 R9 R11 R16 RES 10 0K OHM 1 8W 1 0805 SMD Panasonic ECG ERJ 6ENF1002V 3 R14 R15 R18 RES 0 0 OHM 1 8W 5 0805 SMD Rohm MCR10EZPJ000 1 U1 C ANALOG MUX DUAL 4 CHAN NEL CMOS SSOP 16PIN PLASTIC...

Страница 42: ...MCP42XX PICtail Plus Daughter Board User s Guide DS51759A page 38 2008 Microchip Technology Inc NOTES...

Страница 43: ...multiple configurations Only a subset of these configurations are tested The tests were performed with the configuration shown in Figure C 1 The tested nodes are Channel 1 through Channel 4 Other con...

Страница 44: ...P1A JMP4 P1 P2 AVSS to P1B MAX4582 U1 Y0 5 0V Y3 9 0V and Y2 VSS switching Pads VW1 C 3 WHAT IS NOT TESTED The following portions of the board are NOT tested JMP1 JMP2 JMP3 P2 P3 VA1 to P1A JMP4 P2 P3...

Страница 45: ...Board Testing 2008 Microchip Technology Inc DS51759A page 41 NOTES...

Страница 46: ...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...

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