More than 9 keys interface in LPC84x

[TEMCEFF]

is there possibility of interface more than 9 capacitive touch keys in LPC 84x,

I need to interface telephonic capacitive touch keypad(4*3) to LPC84x.

[fjrg76]

You should look into the way that touch keys are implemented in the LPC824 uC. It's implemented by software (guess this was the first time NXP tried the touch keys, then NXP moved to the touch keys by hardware, but the principle is the same).

Of course that turnaround is more time consuming, but might work. And if it actually works, let me know!

[soledad]

Hi,

For LPC84x devices, the Capacitive Touch interface is designed to handle up to nine capacitive buttons in different sensor configurations, such as slider, rotary, and button matrix.

Have a great day,
Sol

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