MCP46XXEV Microchip Technology, MCP46XXEV Datasheet - Page 13

• Manufacturer Part Number: MCP46XXEV
• Description: MCP46XX Evaluation Board DEVTOOL - Analog
• Manufacturer: Microchip Technology
• Series: -r

Specifications of MCP46XXEV

• Main Purpose: Digital Potentiometer
• Embedded: No
• Utilized Ic / Part: MCP4661
• Primary Attributes: Devices Supported MCP4631, Mcp4641, Mcp4651, MCP4661
• Secondary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

2.3
2.4
© 2010 Microchip Technology Inc.
GETTING STARTED
MCP46XXEV EVALUATION BOARD DESCRIPTION
The MCP46XXEV Evaluation Board allows quick evaluation of the MCP4661-103E/ST
device. The understanding of the device characteristics (such as the resistor network)
is applicable to any of the devices in the MCP46XX family. The MCP4661-103 device
has a typically R
• Using the PICkit Serial Analyzer for interface communication
• Jumpering the MCP46XXEV Evaluation Board into your application circuit to
This user guide will discuss the steps needed to evaluate the MCP4661-103E/ST
device using the PICkit Serial Analyzer (order number: DV164122).
Section 2.5 “Configuring The PICkit™ Serial Analyzer” shows the steps to
configure the PICkit Serial Analyzer as well as create User Script files which are used
to communicate with the MCP4661, based on the devices SPI communication protocol
format.
The MCP46XXEV Evaluation Board uses the flexible TSSOP20EV Evaluation Board
PCB. This simple evaluation board allows the system designer to quickly evaluate the
operation of the MCP4661-103 device (R
Analyzer or by jumpering the board into their application system. The PICkit Serial
Analyzer is available separately (order number: DV164122).
2.4.1
Figure 2-2 shows the component layout of the MCP46XXEV 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.
The pad labeled V
is connected to the PCB ground plane. All the passive components that are connected
to V
The twenty remaining PCB pads correspond to the device pins (i.e.; pad 1 connects to
pin 1).
Each pad has two passive components associated with them: a pull-up resistor and a
pull-down resistor. The pull-up resistor is always RXU and the pull-down resistor is
RXD. The “X” is a numeric value that corresponds to a particular pad (1 to 8). As an
example, Pad 5’s pull-up resistor is R5U. Capacitor C1 and C2 are the power supply
filtering capacitors. For whichever pin is the device’s V
can be used for the device’s bypass capacitor. Table 2-2 describes the components.
A 6-pin header interface is available to support the PICkit Serial or the PIC
In-Circuit Serial Programming™ (ICSP™) interface.
The MCP4661 is bottom aligned in the U3 footprint so that the interface signals are on
the same U3 package pins as future device. This is planned to be similar to the footprint
compatibility between the MCP42X1 and MCP43X1 devices.
control the MCP4661-103 device
DD
or V
The Hardware
SS
are connected to either the power plane or ground plane.
AB
DD
resistance of 10 kΩ. Evaluation can be done by:
is connected to the PCB power plane, while the pad labeled V
Installation and Operation
AB(TYP)
= 10 kΩ) using the PICkit Serial
DD
, the RxD component footprint
DS51929A-page 13
®
MCU
SS