MCP46XXDM-PTPLS Microchip Technology, MCP46XXDM-PTPLS Datasheet - Page 18

• Manufacturer Part Number: MCP46XXDM-PTPLS
• Description: BOARD PICTAIL DIGI POT MCP4XXX
• Manufacturer: Microchip Technology
• Series: PICtail™ Plusr

Specifications of MCP46XXDM-PTPLS

• Main Purpose: Digital Potentiometer
• Embedded: No
• Utilized Ic / Part: MCP46xx
• Primary Attributes: 1 Dual Pot, 10k Ohms, 257 Taps, I²C Interface
• Secondary Attributes: 2.7 ~ 5.5 V, 150 ppm/°C
• Silicon Manufacturer: Microchip
• Silicon Core Number: MCP4631, MCP4632, MCP4641, MCP4642, MCP4651, MCP4652, MCP4661, MCP4662
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.4
DS51804A-page 14
MCP46XX PICTAIL™ PLUS DAUGHTER BOARD DEMOS
This section describes how to demonstrate the MCP46XX PICtail™ Plus Daughter
Board. The demos will either use an Explorer 16 Development Board or a PICkit Serial
Analyzer.
The demo using the Explorer 16 Development Board is discussed in
Section 2.4.1 “Demos with the Explorer 16 Development Board”, while the demo
using the PICkit Serial Analyzer is discussed in Section 2.4.2 “Demo with the PICkit
Serial Analyzer”.
2.4.1
This demo will use the Explorer 16 Development Board. This board needs to be
programmed with the supplied firmware. This firmware can be downloaded from the
Microchip web site. It is a good practice to check the Microchip web site for updates to
the demo firmware.
The supplied firmware program has two modes of operation. In the first mode, the
program generates a saw wave on the VW1 pin (see Figure 2-6). The second 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-on reset) by the
state of the S3 switch. The programs are:
• Wiper 1 Saw Wave (Switch S3 not depressed)
• Increment / Decrement with High Voltage Write to Non-Volatile Wiper 1 Register
Table 2-1 shows the required hardware to operate the demo.
TABLE 2-1:
Item # Description
1
2
3
Note 1:
(Switch S3 depressed)
Note:
Note:
2:
Explorer 16 Development Board and power supply
(DV164033)
MCP46XXDM-PTPLS
4-Channel oscilloscope
A development tool to program the Explorer 16 Development Board is required.
This development tool could be Microchip’s MPLAB ICD-2.
An oscilloscope with fewer channels can be used, but this will require that the
probes be moved between signals to verify the output states. A 2-channel
oscilloscope is the minimum requirement, but it is not recommended.
Demos with the Explorer 16 Development Board
Both demos require that the MCP46XXDM-PTPLS board jumper settings
are as shown in Figure 2-4.
For information on how to use the MPLAB-IDE, ICD-2, or any other aspect
of the PIC Development tool platform, please refer to the appropriate
documentation.
DEMO HARDWARE REQUIREMENTS
© 2009 Microchip Technology Inc.
Comment
Note 1
—
Note 2