Freescale-semiconductor i.MX27 PDK 1.0 Instrukcja Użytkownika Pobierz pdf (Strona 52)

i.MX27 PDK 1.0 Hardware User's Guide, Rev. 1.0 Freescale Semiconductor

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5.4 Keypad

The keypad is implemented on the Personality board. The keypad provides nine buttons, and is

used for applications that require control and navigation capabilities.

As shown in Figure 5-2, the buttons provide the following navigation functions:

Red arrows: LEFT, RIGHT, UP, DOWN

ENTER: at the center of the red arrows

Menu 1 through Menu 4

The Personality board also provides the following:

• An expansion connector to support an 8 x 8 matrix Keypad, for a diverse set of low-cost

applications requiring a keyboard or keypad-like interface.

• (Currently not implemented). A 24-pin connector (CN20) is ready for use as a Keypad

expansion.

Figure 5-2 Keypad

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Freescale-semiconductor i.MX27 PDK 1.0 Instrukcja Użytkownika Strona 52