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[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. Function
AK4182A (QFN16 package) Digital I/F for uP Touch-panel I/F Analog input terminal Digital I/O power supply terminal
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) =2.2V3.6V AGND (Black) = 0V DGND (Black) = 0V IOVDD (Blue) = IFVDD (Orange) = 1.5VVCC 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] -12007/07
[AKD4182A-A]
2) Analog input voltage measurement AIN_P (Green) --------- Analog input AIN_N (Black) --------- AGND Input pin selection: PORT2 (VBAT, IN)
Power supply injection, Evaluation 1) Digital serial data input When the control command data indicated by specification from digital I/F (P1 or PORT3) was inputted the AD conversion is carried out and is outputted from a DOUT. Driver install Attached software is the application software which checks the function of the AK4182A. Windows(R) Win98, Win2K, and WinXP are supported. However, to make it operate on Win2K and XP, it is necessary to install driver in advance. Please follow a procedure with reference to DriverSetupe.pdf. Installation of a driver is unnecessary to use it by the Windows 98 system. Run the software First match Port Address of your PC environment. Measurements are started when the start button is clicked after select Channel Selection, MODE, and Power Down 1 and 2. A result will be displayed on AD OUT Section. When carrying out position detection, the position where pen clicked on the touch panel is measured. Operation can set up two control commands. Continuation operation can be performed. Each data (mean, max, and min) is also displayed at the same time. PENIRQN can be seen by the break of a command.
[KM077600] -22007/07
[AKD4182A-A]
Trouble Shooting
1. 2. Application error is occurred and doesn't start up If the operating system is Windows 2000/XP, Please install AKMport driver first. MEAN value in AD OUT section does not change when click start button (cannot write control command to AK4182A) Please set the port address to your PC platform environment. The MEAN, MAX, MIN value doesn't change wherever the pen pushes down on the panel. There is a possibility of the trouble of the contact of the relay connector (plat 8pin-8-wire converter) that connects the touch panel. Please open JP2, 3, 4, and 6 on the evaluation board, measure panel seat resistance (XP-XN, YP-YN), and check the resistance. Generally, the panel seat resistance is hundreds of . There is a possibility that the touch panel is not correctly connected if the value is over thousands of k. Please connect the relay connector and check the resistance value again.
3.
[KM077600] -32007/07
[AKD4182A-A]
Revision History
Date (YY/MM/DD) 07/07/09 Manual Revision KM077600 Board Revision 0 Reason First Edition Page Contents
IMPORTANT NOTICE These products and their specifications are subject to change without notice. When you consider any use or application of these products, please make inquiries the sales office of Asahi Kasei EMD Corporation (AKEMD) or authorized distributors as to current status of the products. AKEMD assumes no liability for infringement of any patent, intellectual property, or other rights in the application or use of any information contained herein. Any export of these products, or devices or systems containing them, may require an export license or other official approval under the law and regulations of the country of export pertaining to customs and tariffs, currency exchange, or strategic materials. AKEMD products are neither intended nor authorized for use as critical componentsNote1) in any safety, life support, or other hazard related device or systemNote2), and AKEMD assumes no responsibility for such use, except for the use approved with the express written consent by Representative Director of AKEMD. As used here: Note1) A critical component is one whose failure to function or perform may reasonably be expected to result, whether directly or indirectly, in the loss of the safety or effectiveness of the device or system containing it, and which must therefore meet very high standards of performance and reliability. Note2) A hazard related device or system is one designed or intended for life support or maintenance of safety or for applications in medicine, aerospace, nuclear energy, or other fields, in which its failure to function or perform may reasonably be expected to result in loss of life or in significant injury or damage to person or property. It is the responsibility of the buyer or distributor of AKEMD products, who distributes, disposes of, or otherwise places the product with a third party, to notify such third party in advance of the above content and conditions, and the buyer or distributor agrees to assume any and all responsibility and liability for and hold AKEMD harmless from any and all claims arising from the use of said product in the absence of such notification.
[KM077600] -42007/07
5
4
3
2
1
TouchScreen
8 7 6 5 4 3 2 1
J1
YN YP XN XP
VCC PORT2 R1 51
1
AIN_P
PORT1 D1 LED(Red)
2
5 4 3 2 1
AIN_P
6 7 8 9 10
BNCXP BNCYP VBAT IN
6 7 8 9 10
UPD I/F
5 4 3 2 1
P_DCLK
R2 1K P_DCLK P_CSN P_DIN IFVDD
PORT3
AIN_N
D
PORT4 R3 51
5 4 3 2 1
AIN_N
6 7 8 9 10
BNCXN BNCYN
6 7 8 9 10
4182 I/F
5 4 3 2 1
D
R4 51 IOVDD 1K R5 51 RP1 0.1u PENIRQ BUSY DOUT IOVDD R6 51 P1
U1
C1
1 2 3
VCC 1 3 5 9 11 13 7 1A 2A 3A 4A 5A 6A GND
SN74LVC07A TP1 BAT TP2 IN TP3 TP4 TP5 TP6 YN XN YP XP C2 R9 51 DIN open VBAT IN VCC TP7 JP2 XP BNCXP XPSEL JP3 YP BNCYP YPSEL
B
14 2 4 6 8 10 12
DCLK R7 51
C
PENIRQN BUSY DOUT CSN
1Y 2Y 3Y 4Y 5Y 6Y
R8
47K
IOVDD P_DCLK U2 R10 51 BUSY TP8 BUSY CL1 R16 51 R18 TP9 DOUT 100K DOUT R13 DCLK CSN DIN C3 0.1u P_CSN
10 20 3 5 7 9 12 14 16 18
GND VCC 2Y4 2Y3 2Y2 2Y1 1Y4 1Y3 1Y2 1Y1
2OE 1OE 2A4 2A3 2A2 2A1 1A4 1A3 1A2 1A1
19 1 17 15 13 11 8 6 4 2
P_DIN
R11 R12 R14
51 51 51
R15
Tantalum +
DCLK JP1 ICC TP10 CSN C5 0.1u ceramic TP11
0 R17
C4 10u
Cut Land short TP12 PEN
4 3 2 1 3 2 1
IOVDD
13 25 12 24 11 23 10 22 9 21 8 20 7 19 6 18 5 17 4 16 3 15 2 14 1
CONNECTOR DB25
C
1
RP3 RP2 47K
2
SN74LVC244A
DIN 0 U3
16 15 14 13
51
C6 47p
47K
DCLK CSN DIN BUSY
JP4 XN BNCXN XNSEL JP6 YN BNCYN YNSEL
R20
1 2 3 4
VCC XP YP XN
DOUT PENIRQN IOVDD VREF
12 11 10 9
R19
51 PENIRQN
JP5
IOVDD
B
VREF IDD C7 0.1u C8 open AGND DGND CL2
0
R21
5 6 7 8
YN GND VBAT IN
TP13 C10 0.001u C9 0.001u
1
0
C11 0.1u
C12 open
2
1
2
Cut Land open C13 0.001u C14 0.001u C15 0.001u C16 0.001u IN VBAT CL5 Cut Land short AGND CL3 DGND
2
1
Cut Land open
AGND
A
DGND CL4
A
2
1
Cut Land open
-55 4 3 2
Title AKD4182-A Main board Size A3 Date: Document Number Monday, July 09, 2007 Sheet
1
Rev 0.84 1 of 1
-6-
-7-
-8-
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