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  Microchip Technology Semiconductor Electronic Components Datasheet  

AR1000 Datasheet

Resistive Touch Screen Controller

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AR1000 pdf
AR1000 SERIES RESISTIVE TOUCH
SCREEN CONTROLLER
AR1000 Series Resistive Touch Screen Controller
Special Features
• RoHS Compliant
• Power-Saving Sleep mode
• Industrial Temperature Range
• Built-in Drift Compensation Algorithm
• 128 Bytes of User EEPROM
Power Requirements
• Operating Voltage: 2.5-5.0V ±5%
• Standby Current:
- 5V: 85 µA, typical; 125 µA (maximum)
- 2.5V: 40 µA, typical; 60 µA (maximum)
• Operating “No touch” Current:
- 3.0 mA (typical)
• Operating “Touch” Current:
- 17 mA, typical, with a touch sensor having
200layers
- Actual current is dependent on the touch
sensor used
• AR1011/AR1021 Brown-Out Detection (BOR) set
to 2.2V
Touch Modes
• Off, Stream, Down, Up and more.
Touch Sensor Support
• 4-Wire, 5-Wire and 8-Wire Analog Resistive
• Lead-to-Lead Resistance: 50-2,000typical)
• Layer-to-Layer Capacitance: 0-0.5 µF
• Touch Sensor Time Constant: 500 µs (maximum)
Touch Resolution
• 10-bit Resolution (maximum)
Touch Coordinate Report Rate
• 140 Reports Per Second (typical) with a Touch
Sensor of 0.02 µF with 200Layers
• Actual Report Rate is dependent on the Touch
Sensor used
Communications
• SPI, Slave mode, p/n AR1021
• I2C, Slave mode, p/n, AR1021
• UART, 9600 Baud Rate, p/n AR1011
2009-2016 Microchip Technology Inc.
DS40001393C-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

AR1000 Datasheet

Resistive Touch Screen Controller

No Preview Available !

AR1000 pdf
AR1000 SERIES RESISTIVE TOUCH SCREEN CONTROLLER
Table of Contents
1.0 Device Overview .......................................................................................................................................................................... 3
2.0 Basics of Resistive Sensors ......................................................................................................................................................... 5
3.0 Hardware...................................................................................................................................................................................... 9
4.0 I2C Communications .................................................................................................................................................................. 14
5.0 SPI Communications .................................................................................................................................................................. 18
6.0 UART Communications .............................................................................................................................................................. 22
7.0 Touch Reporting Protocol ........................................................................................................................................................... 23
8.0 Configuration Registers .............................................................................................................................................................. 24
9.0 Commands ................................................................................................................................................................................. 30
10.0 Application Notes ....................................................................................................................................................................... 39
11.0 Electrical Specifications .............................................................................................................................................................. 45
12.0 Packaging Information................................................................................................................................................................ 47
Appendix A: Data Sheet Revision History............................................................................................................................................ 57
Appendix B: Device Differences........................................................................................................................................................... 58
The Microchip Website......................................................................................................................................................................... 59
Customer Change Notification Service ................................................................................................................................................ 59
Customer Support ................................................................................................................................................................................ 59
TO OUR VALUED CUSTOMERS
It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip
products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and
enhanced as new volumes and updates are introduced.
If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via
E-mail at docerrors@microchip.com. We welcome your feedback.
Most Current Data Sheet
To obtain the most up-to-date version of this data sheet, please register at our Worldwide Website at:
http://www.microchip.com
You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.
The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000).
Errata
An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current
devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision
of silicon and revision of document to which it applies.
To determine if an errata sheet exists for a particular device, please check with one of the following:
• Microchip’s Worldwide Website; http://www.microchip.com
• Your local Microchip sales office (see last page)
When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you are
using.
Customer Notification System
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DS40001393C-page 2
2009-2016 Microchip Technology Inc.


Part Number AR1000
Description Resistive Touch Screen Controller
Maker Microchip Technology
Total Page 30 Pages
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