C.4.5.  A/D and keypad connector

The signals on the connector J13 are shown in Table C.7.

This connector enables the connection of an external keypad, R[4:1] are the keypad row scan output signals and C[4:1] are the column detect input signals. There are also connections to the analog to digital converter inputs on the CLCD adaptor board, AUX[2:1] and VBAT[2:1].

Table C.8. A/D and keypad J13

SignalPinPinSignal
3V31203V3
AUX1219GND
AUX2318GND
VBAT1417GND
VBAT2516GND
R1615C1
R2714C2
R3813C3
R4912C4
GND1011GND

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