Datasheet

 2009-2012 Microchip Technology Inc. Preliminary DS41393B-page 65
AR1000 SERIES RESISTIVE TOUCH SCREEN CONTROLLER
INDEX
Numerics
4, 5, 8-Wire Sensor Selection ............................................. 12
4-Wire Sensor ....................................................................... 7
4-Wire Touch Sensor Interface ........................................... 12
4-Wire Touch Sensor Interface ........................................... 12
5-Wire Sensor ..................................................................... 10
5-Wire Touch Sensor Interface ........................................... 13
8-Wire Sensor ....................................................................... 9
8-Wire Touch Sensor Interface ........................................... 14
A
Absolute Maximum Ratings ................................................ 51
Addressing .......................................................................... 18
Application Notes ................................................................ 45
Applications........................................................................... 5
AR1011/AR1021 Storing Default Calibration Values
to EEPROM ................................................................ 47
AR1020 Write Conditions.................................................... 19
B
Basics ................................................................................... 7
Basics of Resistive Sensors.................................................. 7
C
Calibration of Touch Sensor with Controller ....................... 45
Clock Stretching.................................................................. 19
Command Protocol ............................................................. 20
Commands.......................................................................... 35
Communication ................................................................... 17
Communications ................................................................... 3
Configuration Registers ................................................ 25, 29
Customer Change Notification Service ............................... 67
Customer Notification Service............................................. 67
Customer Support ............................................................... 67
D
Data Flow............................................................................ 22
Device Overview ................................................................... 5
E
Electrical Specifications ...................................................... 51
Errata .................................................................................... 4
G
General ................................................................................. 7
H
Hardware ............................................................................ 11
I
I2C Hardware Interface....................................................... 17
I2C Pin Voltage Level Characteristics................................. 18
Internet Address.................................................................. 67
M
Main Schematic .................................................................. 11
Master Read Bit Timing ...................................................... 18
Master Write Bit Timing....................................................... 19
Microchip Internet Web Site................................................ 67
N
Noise Considerations.......................................................... 15
P
Packaging........................................................................... 53
Marking................................................................. 53, 54
Power Requirements ............................................................ 3
R
Reader Response............................................................... 68
Register Descriptions.......................................................... 30
Restoring Default Parameters ............................................ 29
Revision History.................................................................. 63
S
Sending Commands ........................................................... 35
Sleep State ......................................................................... 20
Special Features................................................................... 3
SPI Bit Timing - General ..................................................... 23
SPI Communications .......................................................... 21
SPI Hardware Interface ...................................................... 21
SPI Pin Voltage Level Characteristics ................................ 22
Status LED ......................................................................... 15
T
Terminology.......................................................................... 7
Timing – Bit Details............................................................. 24
Touch Modes ........................................................................ 3
Touch Report Protocol........................................................ 20
Touch Report Protocol........................................................ 22
Touch Reporting Protocol ................................................... 27
Touch Resolution.................................................................. 3
Touch Sensor Support.......................................................... 3
U
UART Communications ...................................................... 25
W
Wake Pin ............................................................................ 15
WWW Address ................................................................... 67
WWW, On-Line Support ....................................................... 4