AR1020-I/SO Microchip Technology, AR1020-I/SO Datasheet - Page 13
![IC TOUCH SCREEN CTRLR 20-SOIC](/photos/6/64/66480/150-20-soic_sml.jpg)
AR1020-I/SO
Manufacturer Part Number
AR1020-I/SO
Description
IC TOUCH SCREEN CTRLR 20-SOIC
Manufacturer
Microchip Technology
Type
Resistiver
Specifications of AR1020-I/SO
Package / Case
20-SOIC (7.5mm Width)
Touch Panel Interface
4-Wire, 5-Wire, 8-Wire
Number Of Inputs/keys
3 Key
Resolution (bits)
10 b
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
Voltage Supply Source
Single Supply
Resolution
10 bit
Interface Type
I2C, SPI
Supply Voltage (max)
5 V
Supply Voltage (min)
3.3 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Supply Current
300 mA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Sampling Rate (per Second)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AR1020-I/SO
Manufacturer:
NSC
Quantity:
1 500
Part Number:
AR1020-I/SO
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
7.7.2 SPI
SPI operates in slave mode with an idle low SCK and data transmitted on the SCK falling edge.
The SIQ pin functions as an interrupt output. It is asserted high when data is available. The pin has a dual
purpose with driving an optional LED.
The SS pin is optional for “Slave Select” functionality. It is active (selects) when pulled low to VSS. Tie to VSS if
not used.
If data is clocked out when the controller has no valid data to provide, then 0x4d (ASCII "M") will be presented.
Timing diagrams are shown below.
© 2009 Microchip Technology, Inc.
Figure 9 : I
Figure 10 : I
Figure 11 : SPI Timing Diagram – Bit Timing
2
C Timing Diagram – Touch Report Protocol
2
C Timing Diagram – Command Protocol
DS41393A-Page 9