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Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies.
Chapter 1. Product Overview 1.1 Introduction ..................... 9 1.2 What is the MCP43XXEV Evaluation Board? ..........9 1.3 What the MCP43XXEV Evaluation Board Kit Includes ........ 10 Chapter 2. Installation and Operation 2.1 Introduction ....................11 2.2 Features ....................... 12 2.3 Getting Started .....................
• Customer Support • Document Revision History DOCUMENT LAYOUT This document describes how to use the MCP43XXEV Evaluation Board as a development tool to emulate and debug firmware on a target board. The manual layout is as follows: • Chapter 1. “Product Overview” – Important information about the MCP43XXEV Evaluation Board.
MCP43XXEV Evaluation Board User’s Guide CONVENTIONS USED IN THIS GUIDE This manual uses the following documentation conventions: DOCUMENTATION CONVENTIONS Description Represents Examples Arial font: ® Italic characters Referenced books MPLAB IDE User’s Guide Emphasized text ...is the only compiler... Initial caps...
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Preface RECOMMENDED READING This User’s Guide describes how to use the MCP43XXEV Evaluation Board. Other useful documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources. AN1080 Application Note, “Understanding Digital Potentiometer Resistor Variations”, DS01080 AN1316 Application Note, “Using Digital Potentiometers for Programmable...
MCP43XXEV EVALUATION BOARD USER’S GUIDE Chapter 1. Product Overview INTRODUCTION This chapter provides an overview of the MCP43XXEV Evaluation Board and covers the following topics: • What is the MCP43XXEV Evaluation Board? • What the MCP43XXEV Evaluation Board kit includes...
1x6 Male Header, with 90° right angle FIGURE 1-1: MCP43XXEV Evaluation Board Using the TSSOP20EV Evaluation Board (MCP4361 installed in U3). WHAT THE MCP43XXEV EVALUATION BOARD KIT INCLUDES This MCP43XXEV Evaluation Board kit includes: • MCP43XXEV Evaluation Board •...
Chapter 2. Installation and Operation INTRODUCTION The MCP43XXEV Evaluation Board allows the system designer to quickly evaluate the operation of the MCP4361 10 kΩ (-103) Digital Potentiometer device using the PICkit Serial Analyzer. The PICkit Serial Analyzer is available separately (order number: DV164122).
MCP43XXEV Evaluation Board User’s Guide FEATURES The MCP43XXEV Evaluation Board has the following features: • MCP4361-103E/ST is installed • 0Ω resistors connect MCP4361 V and V signals to the appropriate Power or Ground plane (see Figure 2-2) • 0Ω resistors connect MCP4361’s Resistor Network 0 and 2 A terminal signal to...
2.4.1 The Hardware Figure 2-2 shows the component layout of the MCP43XXEV Evaluation Board. This is a small four-layer board ( 3.9" x 2.1" (99.06 mm x 53.34 mm)). There are twenty two connection points/pads that can use either through-hole or surface-mount connector posts.
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MCP43XXEV Evaluation Board User’s Guide DIP-20 (1) PICkit Serial / ICSP Interface Requires blue TSSOP-20 (1) wire jumpering to connect the PICkit Interface to the selected device P19 P20 SSOP-20 P1 XTAL VIA1 VIA2 PIC Circuitry (bottom of PCB) Note: The TSSOP-14 device (Rheostat) will use the TSSOP-20 footprint, with not all pins connected.
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MCP43XXEV Evaluation Board User’s Guide 2.4.2 The MCP4361 Device To make variations to the commands sent to the MCP4361 device (from the commands shown in the demo section), one must know the device memory map (see Table 2-3) and the command formats (see Figure 2-3). For additional device operational information, refer to the MCP4361 device data sheet (DS22233).
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MCP43XXEV Evaluation Board User’s Guide 2.5.2 Working With the PICkit Serial Analyzer Figure 2-4 shows the PICkit Serial Window after the program has started. The Transaction window indicates if the PICkit Serial GUI located the PICkit Serial Analyzer Hardware. When starting the PICkit Serial Analyzer for the first time, some setup questions may be asked.
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MCP43XXEV Evaluation Board User’s Guide Now we need to configure the mode that we selected. Figure 2-6 shows how to configure the communications mode. Select PICkit Serial Analyzer -> Configure Communications Mode menu item. This will open a new window: FIGURE 2-6: PICkit Serial Main Window at Startup.
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MCP43XXEV Evaluation Board User’s Guide Double clicking on the WriteWiper0 User SPI Script will load the Script Details. Figure 2-10 shows what the values mean in the Script Details. These values are hex numbers. The first value (02h), is the number of bytes that will be written. The second byte is a data byte and contains the Device Register Address, the Device Command, and the two Most Significant bits (MSb) of the write data.
6. Ensure that the Master SPI configuration is appropriately configured (see Figure 2-7). 7. Measure the Wiper 0 voltage on the MCP43XXEV board (see Figure 2-2) using an oscilloscope or digital multimeter. Measure voltage from the ground plane (GND) to the Wiper (P12). The voltage on the Wiper should be ~ V /2 (~2.5V).
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MCP43XXEV Evaluation Board User’s Guide Number of Bytes that will be written Data Byte #1 Data Byte #2 (Write Data “D7:D0”) (Device Register Address + Command + Data bit “D8”) FIGURE 2-13: MCP43XX Read TCON1 Script. 9-bit data value (03Fh)
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MCP43XXEV Evaluation Board User’s Guide Data value (03Fh) read from Wiper 0 register Data value (042h) read from Wiper 0 register after 3 Increment Commands FIGURE 2-17: MCP4361 Transaction Window - Wiper 0 Increments. 2.6.1 The TSSOP20EV PCB and Supported Digital Potentiometers Table 2-4 shows the current Digital Potentiometers that are supported by the TSSOP20EV PCB.
• Board Layout – Top Components • Board – Bottom Silk, Trace and Pads SCHEMATICS AND PCB LAYOUT Board – Schematic shows the schematic of the MCP43XXEV Evaluation Board. The layer order is shown in Figure A-1. Top Layer Ground Layer...
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