Instrukcja obsługi Microchip AR1021
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AR1021
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2009-2016 Microchip Technology Inc. DS40001393C-page 1
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
200 layers
- 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: 50-2,000typical)
• 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 200 Layers
• 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
AR1000 SERIES RESISTIVE TOUCH
SCREEN CONTROLLER
AR1000 Series Resistive Touch Screen Controller
AR1000 SERIES RESISTIVE TOUCH SCREEN CONTROLLER
DS40001393C-page 2 2009-2016 Microchip Technology Inc.
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
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If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via
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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
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devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision
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Specyfikacje produktu
| Marka: | Microchip |
| Kategoria: | Nie skategoryzowane |
| Model: | AR1021 |
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