AR1020-I/ML Microchip Technology, AR1020-I/ML Datasheet - Page 19

• Manufacturer Part Number: AR1020-I/ML
• Description: IC TOUCH SCREEN CTRLR 20-QFN
• Manufacturer: Microchip Technology
• Type: Resistiver

Specifications of AR1020-I/ML

• Resolution (bits): 10 b
• Touch Panel Interface: 4-Wire, 5-Wire, 8-Wire
• Number Of Inputs/keys: 3 Key
• Data Interface: I²C, Serial, SPI™
• Voltage - Supply: 3.3 V ~ 5.5 V
• Current - Supply: 17mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Voltage Supply Source: Single Supply
• Controller Type: Touch Screen
• Ic Interface Type: I2C, SPI
• Supply Voltage Range: 3.3V To 5V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: QFN
• No. Of Pins: 20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sampling Rate (per Second): -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Changing Calibration Timeout Values
There are two timeout values that are adjustable in the registry that correspond to the timeout
value when first launching the calibration application (“CalTimeIn”) and the timeout value after
touching all of the calibration points(“CalTimeOut”). If the countdown timer for “CalTimeIn”
expires, the calibration application simply exits. If the counter for “CalTimeOut” expires then the
calibration application reverts the calibration settings to the previous settings. The default value
“CalTimeIn” is 15 seconds and the default value for “CalTimeOut” is 90 seconds.
Method 1:
Method 2:
Configure Touch Beep
Method 1:
The following lines may be added to the "tsharcs.reg", "tsharcu.reg" or "tsharcp.reg" file.
The "Volume & Sounds" control panel applet uses the "PanelState" registry to store its settings.
If "usewincebeep"=1
If the "usewincebeep"=2
The follow entry is needed to make the option to configure taps in the "Volume & Sounds"
control panel applet visible:
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In "Platform Builder 4.2", click on the “FileView” tab
Double click on the appropriate registry file <WINCEROOT>\PUBLIC\COMMON\OAK
Add the following lines to the end of the file:
Rebuild and recreate run-time image.
Using a registry editor for the target device, change the “CalTimeIn”, “CalTimeOut”
registry items located within the
“HKEY_LOCAL_MACHINE\SOFTWARE\Hampshire\CurrentVersion\Global” branch
according to timeout value(s) that are desired.
Browse to the “Windows” directory using Windows Explorer and double-click the shortcut
“TouchIOCTL”. This will cause current TSHARC driver to re-read and apply the new
registry settings.
[HKEY_LOCAL_MACHINE\SOFTWARE\Hampshire\CurrentVersion\Global]
"usewincebeep"=dword:1
This value is queried on touch-down and changes made in the control panel can be
observed immediately.
This value is queried on touch up. Also, changes in the control panel applet will not be
observed until the second touch.
[HKEY_LOCAL_MACHINE\ControlPanel]
"Screen"=dword:3
o
o
o
If Serial
If PS/2
If USB
[HKEY_LOCAL_MACHINE\SOFTWARE\Hampshire\CurrentVersion\Global]
"CalTimeIn"=dword:F
“CalTimeOut”=dword:5A
\DRIVERS\TSHARC\TSHARCS\TSHARCS.reg
\DRIVERS\TSHARC\TSHARCP\TSHARCP.reg
\DRIVERS\TSHARC\TSHARCU\TSHARCU.reg
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