AK4182A-A Datasheet, PDF (1/9 Pages) Asahi Kasei Microsystems – Evaluation Board

[AKD4182A-A]
AKD4182A-A
AK4182A Evaluation Board Rev.0
Abstract
AKD4182A-A is the board for evaluation of the touch screen controller AK4182A which adopted the QFN small package
suitable for the cellular phone, the handheld game machine, etc. Since AKD4182A-A has a touch-panel I/F and a digital
I/O power supply input terminal, it is easily connectable with a target system of low power/voltage drive. Furthermore,
since the analog input terminal is equipped analog voltage and external battery voltage can also be measured.
„ AK4182A (QFN16 package)
„ Digital I/F for uP
„ Touch-panel I/F
„ Analog input terminal
„ Digital I/O power supply terminal
Function
Touch Panel I/F
Digital I/F
VCC
AGND
AIN_P
AIN_N
AK4182A
IFVDD
DGND
VREF IOVDD
Figure 1 AKD4182A-A Block Diagram
„ Operation procedure
1. Wiring of a power supply
VCC (Red) =2.2V∼3.6V
AGND (Black) = 0V
DGND (Black) = 0V
IOVDD (Blue) = IFVDD (Orange) = 1.5V∼VCC
JP1, JP5-short
2. A setup of evaluation mode and a jumper
3. Power supply injection
„ Evaluation mode selection
1) Position, Pen Pressure
2) Analog input voltage measurement
1) Position, Pen Pressure
4 wire touch-panel (X+, X-, Y+, and Y-) is connected to J1 connector.
Jumper setup
JP2 (XPSEL) ---------select XP
JP3 (YPSEL) ---------select YP
JP4 (XNSEL) ---------select XN
JP6 (YNSEL) ---------select YN
[KM077600]
-1-
2007/07