AR1020-I/ML Microchip Technology, AR1020-I/ML Datasheet - Page 12

IC TOUCH SCREEN CTRLR 20-QFN

AR1020-I/ML

Manufacturer Part Number
AR1020-I/ML
Description
IC TOUCH SCREEN CTRLR 20-QFN
Manufacturer
Microchip Technology
Type
Resistiver
Datasheets

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

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7.7 Communication Interface
The desired communication type is hardware selectable by chip part number and using pin M1.
The communication interface pins are shown below for each communication type.
7.7.1 I
I
The SDO pin functions as an interrupt output. It is asserted high when data is available.
Timing diagrams are shown below.
DS41393A-Page 8
2
C operates in slave mode with 7-bit address of 0x9A.
Table 5 : Communication Selection
Table 6 : Communication Pins
Figure 7 : I
Figure 8 : I
UART
UART
Type
2
Type
SPI
C
SPI
I
I
2
2
C
C
RX, TX, VSS
SCL, SDA, SDO (Irq), VSS
SCK, SDI, SDO, SS, SIQ (Irq), VSS
Chip P/N
AR1020
AR1020
AR1010
2
2
C Timing Diagram – Receive Data
C Timing Diagram – Transmit Data
Communication Pins
M1 pin
VDD
VDD
VSS
© 2009 Microchip Technology, Inc.

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