AK4186 AKM [Asahi Kasei Microsystems], AK4186 Datasheet - Page 26

• Manufacturer Part Number: AK4186
• Description: Low Power Touch Screen Controller with I2C Interface
• Manufacturer: AKM [Asahi Kasei Microsystems]

Figure
[AKD4186] demonstrates the optimum layout, power supply arrangements and measurement results.
AK4186ECB <4-wire Touch Screen Input>
MS1068-E-04
35,
Notes:
Figure
- VSS of the AK4186 should be distributed separately from the ground of external controllers.
- All digital input pins (SCL, SDA, CAD0 pins) must not be left floating.
Analog Supply
Analog Input
Auxiliary
1.6∼3.6V
36,
Figure
10µ
Figure 35. Typical Connection Diagram (4-wire, AK4186ECB)
37,
+
Figure 38
0.1µ
shows the system connection diagram for the AK4186. The evaluation board
“L” or “H”
SYSTEM DESIGN
VDD
XP
IN
PENIRQN
Touch Screen
- 26 -
Top View
CAD0
YP
4-wire
TEST
SDA
XN
VSS
SCL
YN
Rp
Analog Ground
0.001µ *
0.001µ *
0.001µ *
0.001µ *
Rp
Digital Ground
µP
[AK4186]
2011/03