resistive touch for Am335x

Semir Fazlagic

We intend to use built analog resistive touch controller for our AM335x board.

As I understand from SDK schematic, AM335x supports directly 4 wires resistive touch.

Could you confirm me that connection four analog line is direct to resistive touch (no any filters, capacitors...)

Regards

0 Biser Gatchev-XID over 11 years ago

Hi Semir,

Yes, this is correct. You can check for example the Starter Kit schematic (http://processors.wiki.ti.com/images/a/a2/TMDSSK3358_3H0009_REV1_2B_SCH.pdf). 4, 5 and 8-wire resistive touchscreens are directly supported by the AM335X ADC (see also section 3.5 in the AM335X Datasheet, Rev. F).

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