AR1020-I/ML Microchip Technology, AR1020-I/ML Datasheet - Page 3

• 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

© 2009 Microchip Technology, Inc.
TABLE OF CONTENTS
1
2
3
4
5
6
7
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
7.12
7.13
7.14
7.15
7.16
GENERAL.............................................................................................................................................. 1
FEATURES............................................................................................................................................ 1
APPLICATIONS..................................................................................................................................... 2
ORDERING............................................................................................................................................ 2
BLOCK DIAGRAM ................................................................................................................................. 2
PIN DIAGRAM ....................................................................................................................................... 3
FUNCTIONAL DESCRIPTION .............................................................................................................. 4
7.7.1
7.7.2
7.7.3
7.12.1
7.12.2
7.12.3
7.12.4
7.12.5
7.12.6
7.12.7
7.12.8
7.12.9
7.12.10
7.12.11
7.12.12
7.12.13
7.12.14
7.12.15
7.15.1
7.15.2
7.15.3
7.15.4
7.15.5
7.15.6
7.15.7
7.15.8
7.15.9
7.15.10
7.15.3.1
M
B
4, 5, 8-W
4-
5-
8-
C
S
ESD C
N
T
C
C
C
C
C
ILL OF
TATUS
OUCH
OMMUNICATION
OISE
ONFIGURATION
OMMAND
OMMAND
OMMANDS
ALIBRATION OF
AIN
WIRE
WIRE
WIRE
I
SPI........................................................................................................................................... 9
UART..................................................................................................................................... 10
TouchThreshold Register (offset 0x02)................................................................................. 12
SensitivityFilter Register (offset 0x03)................................................................................... 12
SamplingFast Register (offset 0x04)..................................................................................... 13
SamplingSlow Register (offset 0x05) .................................................................................... 13
AccuracyFilterFast Register (offset 0x06) ............................................................................. 13
AccuracyFilterSlow Register (offset 0x07) ............................................................................ 13
SpeedThreshold Register (offset 0x08) ................................................................................ 13
SleepDelay Register (offset 0x0A) ........................................................................................ 14
PenUpDelay Register (offset 0x0B) ...................................................................................... 14
Enable Touch - 0x12 ............................................................................................................. 18
Disable Touch - 0x13 ............................................................................................................ 18
Calibrate - 0x14 ..................................................................................................................... 19
Register Read - 0x20 ............................................................................................................ 21
Register Write - 0x21............................................................................................................. 21
Register Start Address Request - 0x22................................................................................. 21
Registers Write to EEPROM - 0x23 ...................................................................................... 21
EEPROM Read - 0x28 .......................................................................................................... 22
EEPROM Write - 0x29 .......................................................................................................... 22
S
2
C
C............................................................................................................................................ 8
CHEMATIC
ONSIDERATIONS
T
T
T
R
M
TouchMode Register (offset 0x0C).................................................................................... 15
TouchOptions Register (offset 0x0D) ................................................................................ 16
CalibrationInset Register (offset 0x0E).............................................................................. 16
PenStateReportDelay Register (offset 0x0F) .................................................................... 17
TouchReportDelay Register (offset 0x11) ......................................................................... 17
User Configuration – Spiking ............................................................................................. 17
EEPROM Write to Registers - 0x2B .................................................................................. 22
LED..................................................................................................................................................10
ONSIDERATIONS
OUCH
OUCH
OUCH
EPORTING
IRE
ATERIALS
How the Calibration Data is Encoded and Stored in EEPROM ..................................... 20
F
R
....................................................................................................................................................18
ORMAT
ESPONSE
S
ENSOR
S
S
S
T
ENSOR
ENSOR
ENSOR
R
I
..............................................................................................................................................4
NTERFACE
OUCH
EGISTERS
...........................................................................................................................................4
.........................................................................................................................................17
P
ROTOCOL
S
.....................................................................................................................................18
...................................................................................................................................11
ELECTION
I
I
I
S
NTERFACE
NTERFACE
NTERFACE
.................................................................................................................................11
ENSOR WITH
..............................................................................................................................8
............................................................................................................................12
........................................................................................................................11
......................................................................................................................5
....................................................................................................................5
....................................................................................................................6
....................................................................................................................7
C
ONTROLLER
.........................................................................................23
DS41393A-Page iii