AR1021-I/SS Microchip Integrated Circuit (Small Outline Packages) In Stock
The AR1021-I/SS is a resistive touch screen controller from Microchip Technology, featuring 10-bit resolution at 140 samples per second with SPI serial interface in a 20-pin SSOP package. It supports 4-wire, 5-wire, and 8-wire resistive touch panels for broad compatibility. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- AR1021-I/SS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.6600(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Supports 4-wire, 5-wire, and 8-wire resistive touch panels, providing flexibility for diverse display integration
- 10-bit ADC resolution at 140 samples per second delivers accurate and responsive touch position reporting
- SPI serial interface simplifies connection to virtually any microcontroller or processor
- 20-pin SSOP package provides a compact, industry-standard footprint for space-constrained embedded display designs
Applications
The AR1021-I/SS is ideal for embedded human-machine interface (HMI) designs using resistive touch screens in industrial control panels, medical devices, and consumer electronics. Its multi-wire panel support and SPI interface make it easy to integrate with a wide range of microcontrollers for cost-effective touch input solutions. The device is also well suited for point-of-sale terminals, portable instruments, and home appliance control panels requiring reliable resistive touch detection.
Specifications
| Manufacturer Package Code | SSOP-20 |
| Factory Lead Time | 6Weeks |
| YTEOL | 3 |
| Analog IC - Other Type | ANALOG CIRCUIT |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Screening Level | TS 16949 |
| Supply Voltage-Max (Vsup) | 5.25V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What touch panel types does the AR1021-I/SS support?
The AR1021-I/SS supports 4-wire, 5-wire, and 8-wire resistive touch panels. This multi-wire compatibility allows designers to use a wide variety of commercially available resistive touch screens without changing the controller IC, reducing redesign effort and component variety.
What is the resolution and sampling rate of the AR1021-I/SS?
The AR1021-I/SS provides 10-bit ADC resolution, delivering 1024 positions per axis for precise touch coordinates. It samples the touch panel at up to 140 samples per second (140 sps), providing responsive and accurate touch detection for interactive HMI applications.
What communication interface does the AR1021-I/SS use?
The AR1021-I/SS uses a Serial SPI (Serial Peripheral Interface) for communication with a host microcontroller. SPI is a standard, widely supported protocol that simplifies integration into virtually any embedded system using minimal GPIO pins.
What package is the AR1021-I/SS available in?
The AR1021-I/SS is housed in a 20-pin SSOP (Shrink Small Outline Package) with a 0.3-inch body width, JESD-30 code R-PDSO-G20. This compact surface-mount package is suitable for space-constrained PCB designs and is compatible with standard automated assembly processes.
Related Guides
How to Choose a BAS70 Schottky Diode for Signal Clamping: Selection Guide
A practical BAS70KFILM and BAS70-family Schottky diode selection guide for signal clamping, RF detection, leakage, and topology choices.
Jul 4, 2026
AMC1202DWVR Design Guide for Isolated Current Sensing
Practical AMC1202DWVR design guide covering shunt sizing, isolation layout, input filtering, ADC scaling, and sourcing choices.
Jul 4, 2026
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.8732 | $1.87 |
| 1000+ | $1.7500 | $1750.00 |
| 5000+ | $1.6600 | $8300.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”