MCP402XEV Microchip Technology, MCP402XEV Datasheet - Page 11

• Manufacturer Part Number: MCP402XEV
• Description: BOARD EVAL FOR MCP402X
• Manufacturer: Microchip Technology

Specifications of MCP402XEV

• Main Purpose: Digital Potentiometer
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP4021
• Primary Attributes: 1 Single Pot, 10 kOhm, 64 Tap, Non Volatile
• Secondary Attributes: 2.7 ~ 5.5 V, 150 ppm/°C
• Processor To Be Evaluated: MCP402X
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

2.1
2.2
© 2005 Microchip Technology Inc.
INTRODUCTION
PCB DESCRIPTION
Chapter 2. Installation and Operation
The MCP402X Digital Potentiometer Evaluation Board provides a tested,
out-of-the-box example of a MCP401X/2X application. The circuit description is
described in Section 2.2 “PCB Description”, while the test and operating instructions
are described in Section 2.3 “Test and Operating Instructions”. A supplied blank
PCB allows rapid prototyping of the designer’s specific MCP401X/2X device, along
with other desired passive components (resistor and capacitors) and connection posts.
The MCP402X Digital Potentiometer Evaluation Board has the following features:
• 150 mil, 8-pin SOIC pinout (U1) supports the MCP4021 and MCP4011 devices
• SOT-23-6 pinout (U2) supports the MCP4022/23/24 and MCP4012/13/14 devices
• SOT-23-6 pinout (U3) supports the PIC10F20X devices
• Connection terminals can be left unpopulated for easy connection using small
• Footprints for optional passive components for:
• Footprints for two switches:
• Button sequence instructions are printed on the back of the PCB
Appendix A.2 “Schematic” illustrates the schematic for the MCP402XEV.
alligator clip leads (clamped across the edge of the board) or populated with either
through-hole or surface-mount terminals
Note:
- Power supply filtering
- Device bypass capacitor
- Terminal “A” pull-up resistor
- Terminal “B” pull-down resistor
- INCR button operation can be detected by the PIC10F20X to generate
- DECR button operation can be detected by the PIC10F20X to generate
Increment commands (move wiper toward terminal A)
Decrement commands (move wiper toward terminal B)
The PIC10F20X firmware (00066_MCP402XEV.HEX) must be
programmed into the microcontroller before the MCP402XEV is functional.
MCP401X/2X EVALUATION
BOARD USER’S GUIDE
DS51546B-page 7