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PDF AR1010 Data sheet ( Hoja de datos )
| Número de pieza | AR1010 | |
| Descripción | Resistive Touch Screen Controller | |
| Fabricantes | Microchip Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AR1010 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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AR1000 Series Resistive Touch Screen
Controller
DS41393A
1 page  
www.Da1taSheGet4EUN.coEm RAL
The mTouch AR1000 Series Resistive Touch Screen Controller is a complete, easy to integrate, cost effective,
and universal touch screen controller chip solution.
The AR1000 Series is designed for high volume, small form factor touch solutions with quick time to market
requirements.
Developed by touch experts with over 15 years experience, the AR1000 Series has sophisticated proprietary
touch screen decoding algorithms allowing it to send your application fully processed and reliable touch
coordinates.
2 FEATURES
Special Features:
• RoHS Compliant
• Power-Saving Sleep mode
• Industrial Temperature Range
• Built in drift compensation algorithm
• 128 Bytes of user EEPROM
• 4 x 4 mm QFN package
Power Requirements:
• Operating Voltage: 3.3 to 5.0 volts ±5%
• Standby Sleep Current: <1uA
• Operating “No touch” Current: 3.0mA typ.
• Operating “Touch” Current: 17mA typ
with a touch sensor having 200Ω layers.
- Actual current is dependent on the touch sensor used.
Touch Modes:
• Off, Stream, Down, Up, and more.
Touch Sensor Support:
• 4 wire, 5 wire, and 8 wire analog resistive
• Lead to Lead Resistance: 50Ω to 2,000Ω
• Layer to Layer Capacitance: 0 to 0.5uF
• Touch Sensor Time Constant: 500us maximum
Touch Resolution:
• 10-bit resolution maximum
Touch Coordinate Report Rate:
• 140 reports per second typ.
with a touch sensor of 0.02uF with 200Ω layers.
- Actual report rate is dependent on the touch sensor used.
Communications:
• SPI, slave mode, p/n AR1020
• I2C™, slave mode, p/n AR1020
• UART, 9600 bps, p/n AR1010
Sensor Support
All 4, 5, and 8-wire sensors are supported, regardless of manufacturer or construction.
See BASICS OF RESISTIVE SENSORS section.
Low-Power Wake-Up
Wake-up from power saving sleep mode, via a touch or communication input.
Configuration Registers
Configuration registers provide user configuration of controller features.
See Configuration Registers section.
Touch Algorithms
Algorithms provide for good calibration-corrected coordinates, with no additional development or code.
Touch decoding
Coordinate data filtering
Calibration corrected coordinate option
Built-in touch modes
Communication Control
AR1010 supports UART communication. AR1020 supports I2C and SPI communication.
See Communication Interface section.
© 2009 Microchip Technology, Inc.
DS41393A-Page 1
5 Page 
www.Da7St.ae6Snhseoer8t4t-Uaw.icl ioprmien-oTuotsuccahn
Sensor Interface
vary by manufacturer
and
part
number.
Ensure both sensor tail pins for one sensor axis
(layer) are connected to the controller’s X–/X+ pins and the tail pins for the other sensor axis (layer) are
connected to the controller’s Y–/Y+ pins. The controller’s X–/X+ and Y–/Y+ pin pairs do not need to connect to a
specific sensor axis. The orientation of controller pins X– and X+ to the two sides of a given sensor axis is not
important. Likewise, the orientation of controller pins Y– and Y+ to the two sides of the other sensor axis is not
important.
The 8-wire sensor differs from a 4-wire sensor in that each edge of an 8-wire sensor has a secondary connection
brought to the sensor’s tail. These secondary connections are referred to as “sense” lines. The controller pins
associated with the sense line for an 8-wire sensor contain an ‘S’ prefix in their respective names. For example,
the SY– pin is the sense line connection associated with the main Y– pin connection.
Consult with the sensor manufacturer’s specification to determine which member of each edge connected pair is
the special 8-wire “sense” connection. The controller requires that the main and “sense” tail pin pairs for sensor
edges be connected to controller pin pairs as follows.
Y– and SY–
Y+ and SY+
X– and 5WSX–
X+ and SX+
Connections to a 8-wire touch sensor are as follows.
Figure 6 : 8-wire Touch Sensor Interface
The capacitance of alternate ESD diodes may adversely affect touch performance. A lower
capacitance is better. The PESD5V0S1BA parts shown in the reference design have a typical
capacitance of 35pF. Test to ensure that selected ESD protection does not degrade touch
performance.
ESD protection is shown in the reference design, but acceptable protection is dependent on your
specific application. Ensure your ESD solution meets your design requirements.
© 2009 Microchip Technology, Inc.
DS41393A-Page 7
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AR1010.PDF ] | |
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