www.ti.com
TCA8424 EVM Design Circuitry, Bill of Materials, and Connection Descriptions
6.4
VCC and GND Connections
Pin 1 of J1 is a power input to the board and Pin 2 is the GND connection for the board. There are also 4
other GND test points in the corners of the board.
The TCA8424 cannot be powered from the MSP430 Launchpad when programming and needs
an external supply.
Figure 6. VCC and GND Connections
6.5
MSP430 Launchpad Interface
Headers P8 and P9 allow the EVM to interface with the MSP430 Launchpad. If not programming a unit,
jumpers P12, P13, P14, and P16 may be installed, header P15 should be removed. When programming a
unit, an external power supply is needed and all headers except P16 should be installed.
Figure 7. MSP430 Launchpad Interface
11
SCDU004 – March 2013
TCA8424 Evaluation Module
Submit Documentation Feedback
Copyright © 2013, Texas Instruments Incorporated
