Microchip Technology PICtail Plus MCP25625, User Manual

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MCP25625 PICTAIL™ PLUS
DAUGHTER BOARD
USER’S GUIDE

2015 Microchip Technology Inc. DS50002414A-page 11
Chapter 2. Installation and Operation
2.1 HARDWARE OVERVIEW
The MCP25625 PICtail Plus Daughter Board can be connected to either a PIC micro-
controller or a development board with the PICkit Plus connector or the PICkit Serial
connector.
Figure 2-1 below shows the connections to the Explorer 16 Development
Board (DM240001).
2.2 JUMPER SETTINGS
Table 2-1 briefly describes the functions of all the board's jumpers.
TABLE 2-1: JUMPER DESCRIPTIONS
Index Description
JP1 • Drives the STBY pin of the transceiver to GND manually or via the
Explorer 16 demo board when used as PICTail™ daughter board
(plugged into the Explorer 16).
• Short-circuit pins 1 and 2 (top and middle) to connect to GND, or pins 2
and 3 (middle and bottom) to connect to the Explorer 16.
Default configuration: pins 1 and 2 (top and middle) short-circuited.
JP2 • Powers-up the CAN Controller with 5V or 3.3V. It also feeds the VIO of
the transceiver; this voltage is determined by the MCU that the user
implements (5V or 3.3V).
• Short-circuit pins 1 and 2 (left-hand side) to select 5V, or pins 2 and 3
(right-hand side) to select 3.3V.
Default configuration selects 5V operation mode.
JP3
(1)
When disconnected, separates the RXD of the transceiver from the RXCAN of the
controller.
JP4
(1)
When disconnected, separates the TXD of the transceiver from the TXCAN of the
controller.
JP5
(1)
When connected, enables access to the 9V supply from the Explorer 16.
JP6
(1)
When connected, implements a capacitor with the jumper JP7 enabled 120 Ω
termination resistor.
JP7
(1)
When connected, implements the 120 Ω termination resistor.
Note 1: Jumpers JP3, JP4, JP5, JP6 and JP7 are not populated, however, they are
short-circuited on the bottom layer (back) of the board. The traces can be cut in
order to disconnect them.