AK4185-A Datasheet, PDF (5/18 Pages) Asahi Kasei Microsystems – Evaluation board

[AKD4185-A]
(2) 5-Wire Touch Screen position measurement.
In case of evaluating a 5-Wire Touch Screen function of the AK4185, it is necessary to connect the 5-Wire
Touch Panel with J2 terminal as shown Table 3. Regarding pin assignment of J2, refer to Table 3 or circuit
diagram in this manual. As for the AK4185’s register definitions, refer to datasheet of the AK4185.
5-wire resistive touch panel should be connected to J2.
The pin assignment of J2 is shown on Table 3.
No. Name
Description
5
5W-BL 5-Wire Touch Screen Bottom-Left Voltage supply
4
5W-TL 5-Wire Touch Screen Top-Left Voltage supply
3
5W-WIPE
R
5-Wire Touch Screen WIPER Voltage supply
2
5W-BR 5-Wire Touch Screen Bottom-Right Voltage supply
1
5W-TR 5-Wire Touch Screen Top-Right Voltage supply
Table 3. J2 (5P Header) pin assign
Set up the jumper pins.
JP1
JP2
XP/BR-SEL YP/TR-SEL
JP3
JP4
JP7
XN/TL-SEL YN/BL-SEL IN/WIPER-SEL
4W-XP
5W-BR
BNCXP
4W-YP
5W-TR
BNCYP
4W-XN
5W-TL
BNCXN
4W-YN
5W-BL
BNCYN
IN
5W-WIPER
The AK4185’s register (Touch Screen Register) should be set to 5-Wire Touch Screen Operation.
<KM090700>
-5-
2007/11