Datasheet

TCA8424 EVM Design Circuitry, Bill of Materials, and Connection Descriptions

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6.6 Breakout Pins

The breakout headers P1 and P2 allow connection of an external keyboard matrix to the EVM. P17 is

connected to the I

C lines of the TCA8424 allowing an external host to communicate to the TCA8424.

Figure 8. Breakout Pins

Table 2. Header Configurations for P1, P2, and P7

P1 P2 P7

Row15 (pin 16) Row14 Col7 Col6 GND (pin 1)

Row13 Row12 Col5 Col4 /INT

Row11 Row10 Col3 Col2 SDA

Row9 Row8 Col1 Col0 (pin 1) SCL

Row7 Row6

Row5 Row4

Row3 Row2

Row1 Row0 (pin 1)

TCA8424 Evaluation Module SCDU004–March 2013

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