Microchip Technology MCP42XXDM-PTPLS Ficha De Dados
Installation and Operation
© 2008 Microchip Technology Inc.
DS51759A-page 11
2.3.1
The Hardware
Figure 2-2 shows the component placement of the MCP42XX PICtail Plus Daughter
Board as well as the operation of the board jumpers.
Board as well as the operation of the board jumpers.
The VAx and VBx pads allow an external voltage source to be applied to the device’s
desired Terminal A or Terminal B pin. The VWx pad is directly connected to the corre-
sponding Terminal W pin, which makes it easy to measure the resulting voltage. The
AVDD pad allows an external power supply to power the board, which should improve
performance compared to powering the board via the PICtail Plus header or the PICkit
Serial Analyzer.
desired Terminal A or Terminal B pin. The VWx pad is directly connected to the corre-
sponding Terminal W pin, which makes it easy to measure the resulting voltage. The
AVDD pad allows an external power supply to power the board, which should 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 I
2
C
device families (MCP42XX and MCP46XX), so not all components are installed for the
SPI version of the demo board.
SPI version of the demo board.
2.3.1.1
JUMPER DESCRIPTIONS
Figure 2-2 shows the function of the demo board jumpers. Some of the jumpers con-
figure the voltage source of the Terminal A and Terminal B pins while others determine
the connection of the W pins. Lastly there is a jumper to ensure that drive conflicts do
not occur if an external power supply is being used for the AVDD voltage.
figure the voltage source of the Terminal A and Terminal B pins while others determine
the connection of the W pins. Lastly there is a jumper to ensure that drive conflicts do
not occur if an external power supply is being used for the AVDD voltage.
The default jumper configuration for the shipped demo board is shown in Figure 2-3.