AR1020-I/ML Microchip Technology, AR1020-I/ML Datasheet - Page 20

• 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

Method 2
The Beep can also be configured using the Windows CE "Volume & Sounds" control panel
applet. To use this applet, set the "usewincebeep" entry to a DWORD value of one or two in the
"HKEY_LOCAL_MACHINE\SOFTWARE\Hampshire\CurrentVersion\Global" registry branch.
Enable/Disable Touch Beep
Enable
To enable the beep add the registry value "beepEnabled" and set it to one.
Disable
To disable the beep, exclude the "beepEnabled" registry value or set to zero.
Loud Beep
To make the beep loud, add the registry value "beepIsLoud" and set it to one.
Soft Beep
To make the beep soft, exclude the "beepIsLoud" registry value or set to zero.
Changing the mouse event stream rate
When the mouse cursor moves and changes state as a result of a touch, the TSHARC CE driver
sends a series of mouse events to the Windows CE event queue. If the mouse events are sent
too fast, other CE applications and background process may take longer to process their own
events while the touch screen is being touched. For this reason, a new feature has been added
to the TSHARC Serial and USB drivers to allow adjustment of the speed at which the driver
sends mouse events.
The default value is a minimum duration 16 clock ticks for every mouse packet (except for pen up
and pen down packets which are always processed immediately).
which mouse packets are sent. For faster devices, it may be desirable to decrease this value to
increase the rate at which mouse packets are sent.
Method 1:
Method 2:
For slower embedded devices, it may be desirable to increase this value to decrease to rate at
•
•
•
•
•
In "Platform Builder 4.2", click on the FileView tab
Double click on the appropriate registry file <WINCEROOT>\PUBLIC\COMMON\OAK
Using a registry editor for the target device, add or change the “mouseMoveThreshold”,
registry item located within the
“HKEY_LOCAL_MACHINE\SOFTWARE\Hampshire\CurrentVersion\Global” branch to
the desired minimum duration length to be applied for every mouse stream packet.
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.
Add the following lines:
o
o
o
If Serial
If PS/2
If USB
[HKEY_LOCAL_MACHINE\SOFTWARE\Hampshire\CurrentVersion\Global]
"mouseMoveThreshold"=dword:10
\DRIVERS\TSHARC\TSHARCS\TSHARCS.reg
\DRIVERS\TSHARC\TSHARCP\TSHARCP.reg
\DRIVERS\TSHARC\TSHARCU\TSHARCU.reg
20