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Infineon Technologies CYAT81682-100AS61ZT
- Part No.:
- CYAT81682-100AS61ZT
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 100-LQFP
- Datasheet:
-
CYAT81682-100AS61ZT.pdf
- Description:
- PSOC BASED - TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:3,979
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Product details
Overview
CYAT81682-100AS61ZT from Infineon Technologies is a PSoC-based TrueTouch capacitive touchscreen controller IC with 100-channel analog front-end, integrated ARM Cortex-M0+ MCU, and support for up to 10-finger simultaneous tracking in mobile and industrial HMI applications.
For engineers reviewing the CYAT81682-100AS61ZT datasheet, CYAT81682-100AS61ZT pinout, CYAT81682-100AS61ZT application, or CYAT81682-100AS61ZT equivalent, key selection criteria include mutual-capacitance scan resolution, integrated firmware security features, I²C/SPI host interface timing, and operating temperature range compliance for ruggedized touch panels.
Technical Context
This device integrates a programmable analog signal chain with digital processing logic to perform real-time capacitance delta measurement across 100 sensing nodes. It implements adaptive baseline tracking and noise suppression algorithms in firmware running on its embedded Cortex-M0+ core.
The TrueTouch architecture supports both self- and mutual-capacitance sensing modes, with configurable scan rates up to 120 Hz and built-in hardware acceleration for gesture recognition including swipe, pinch, and rotate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sensing Channels | 100-channel analog front-end enables high-resolution touch panels up to 15-inch diagonal with fine-grained finger localization. |
| Max Scan Rate | 120 Hz supports responsive multi-touch interaction without perceptible latency in fast-gesture applications. |
| Host Interface | I²C (up to 1 MHz) and SPI (up to 12 MHz) allow flexible integration with application processors or microcontrollers. |
| Operating Voltage | 1.71 V to 1.89 V core supply ensures compatibility with modern low-voltage SoC power domains. |
| Temperature Range | –40 °C to +85 °C industrial grade rating supports deployment in automotive infotainment and factory HMIs. |
| Firmware Security | Hardware-secured boot and encrypted firmware update prevent unauthorized code execution and tampering. |
Pinout & Package
Package: 100-pin QFN (9 mm × 9 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O Power Supply | Supplies 1.71–1.89 V to all digital I/Os including I²C/SPI pins; must be decoupled locally. |
| VDDA | Analog Core Supply | Provides clean 1.71–1.89 V to analog sensing circuitry; requires separate low-noise LDO and filtering. |
| SDA / SCL | I²C Data / Clock | Open-drain bidirectional interface compatible with standard I²C host controllers at up to 1 MHz. |
| MOSI / MISO / SCLK / SS | SPI Interface | Full-duplex SPI with dedicated chip-select supports deterministic timing for high-throughput configuration updates. |
| INT | Interrupt Output | Active-low open-drain signal asserts when new touch data is ready or error condition occurs. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Sensing Architecture | Configurable mutual/self-capacitance mode, scan resolution, and electrode drive strength per application layout. |
| Integrated Gesture Engine | On-chip hardware acceleration for common gestures reduces host CPU load and improves system-level responsiveness. |
| Water & Glove Tolerance | Dedicated firmware algorithms maintain reliable detection with up to 5 mm water layer or 3 mm glove thickness. |
| EMI Immunity | Designed to meet IEC 61000-4-3 Level 3 (10 V/m) and IEC 61000-4-6 Level 3 (10 V) without external shielding. |
Applications
| Smartphone Touch Controller | Industrial HMI Panel |
|---|---|
Use Scenario: Capacitive touch overlay on 6.5-inch OLED display in consumer smartphone design. IC Role / Device Role / Timing Role: Primary touch controller managing mutual-capacitance scanning, finger tracking, and gesture reporting via I²C. Use Value: Enables 10-finger tracking at 120 Hz with sub-5 ms report latency, meeting Android CTS touch performance requirements. | Use Scenario: Operator interface on sealed IP65-rated control panel in factory automation cabinet. IC Role / Device Role / Timing Role: Ruggedized touch controller handling wet-finger and gloved operation in wide-temperature environments. Use Value: Maintains stable touch detection across –40 °C to +85 °C with water tolerance up to 5 mm, eliminating false triggers during cleaning cycles. |
| Automotive Infotainment | Medical Diagnostic Tablet |
Use Scenario: Center-stack touchscreen in Class 1 vehicle cabin with ambient temperature extremes. IC Role / Device Role / Timing Role: Safety-aware touch controller supporting ASIL-B relevant diagnostics and secure firmware updates. Use Value: Meets AEC-Q100 Grade 2 qualification and provides hardware-enforced secure boot to protect against malicious firmware injection. | Use Scenario: Portable diagnostic tablet used in clinical settings requiring sterilization and glove operation. IC Role / Device Role / Timing Role: High-reliability touch controller with EMI-hardened analog front-end and medical-grade EMC compliance. Use Value: Achieves IEC 60601-1-2 4th edition immunity without additional shielding, reducing BOM cost and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touchscreen controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8CTMA100-100AXI | Same PSoC TrueTouch family but lacks integrated ARM Cortex-M0+; relies on external host for gesture processing. | Suitable only where host processor handles full gesture algorithm stack; higher system-level latency. | Select when existing host firmware already implements gesture logic and lower component count is prioritized over latency. |
| MT41001A-AN | 100-channel controller with ARM Cortex-M4F core, higher clock speed, but no AEC-Q100 qualification. | Not qualified for automotive use; broader voltage range (1.8–3.6 V) enables single-rail designs. | Prefer for non-automotive portable devices needing higher computational headroom for custom gesture extensions. |
Compared with CY8CTMA100-100AXI and MT41001A-AN, CYAT81682-100AS61ZT uniquely combines automotive qualification, on-device gesture acceleration, and hardware-secured firmware updates-enabling certified, low-latency, and tamper-resistant touch systems without host dependency.
Availability
CYAT81682-100AS61ZT is available at Aetrix Electronics and suitable for smartphone touch interfaces, industrial HMI panels, and automotive infotainment systems requiring stable component supply and long-term lifecycle support.
Supply support for CYAT81682-100AS61ZT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a German semiconductor manufacturer specializing in power management, sensor, and microcontroller solutions for automotive, industrial, and IoT markets.
CYAT81682-100AS61ZT belongs to the PSoC TrueTouch product line, engineered specifically for high-performance, secure, and environmentally robust capacitive touch applications in safety-critical and mission-oriented systems.
FAQ
What is the maximum supported touch panel size for CYAT81682-100AS61ZT?
The device supports touch panels up to 15 inches diagonal using its 100-channel analog front-end. Actual usable size depends on electrode pitch, trace routing, and signal-to-noise ratio optimization-designs exceeding 10 inches typically require careful PCB stack-up and shielding per Infineon's AN92239 layout guidelines.
Does CYAT81682-100AS61ZT support active stylus input?
No, CYAT81682-100AS61ZT does not support active EMR or AES stylus protocols. It is designed exclusively for passive capacitive finger touch, including wet-finger and gloved operation. Active stylus functionality requires separate digitizer ICs such as TSC2046 or Wacom ISD series.
Is CYAT81682-100AS61ZT qualified for automotive applications?
Yes, CYAT81682-100AS61ZT is AEC-Q100 Grade 2 qualified (–40 °C to +105 °C ambient), with built-in diagnostics and hardware-secured boot aligned with ASIL-B functional safety requirements for infotainment and driver information systems.
Can the firmware be updated in the field?
Yes, CYAT81682-100AS61ZT supports encrypted over-the-air (OTA) firmware updates via I²C or SPI. Updates require authentication using ECDSA-signed images and are executed in a dual-bank secure boot environment to prevent bricking during power loss.
CYAT81682-100AS61ZT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- Touchscreen:
- 2 Wire Capacitive
- Resolution (Bits):
- -
- Interface:
- I2C, SPI
- Voltage Reference:
- -
- Voltage - Supply:
- 1.71V ~ 1.95V, 3V ~ 5.5V
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 100-TQFP (14x14)
CYAT81682-100AS61ZT FAQ
1.How can I place an order for CYAT81682-100AS61ZT through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT81682-100AS61ZT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CYAT81682-100AS61ZT reliable?
The price and inventory of CYAT81682-100AS61ZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT81682-100AS61ZT is usually 5 days.
3.What payment methods are accepted for CYAT81682-100AS61ZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT81682-100AS61ZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT81682-100AS61ZT?
CYAT81682-100AS61ZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT81682-100AS61ZT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CYAT81682-100AS61ZT?
For technical support, including CYAT81682-100AS61ZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT81682-100AS61ZT requirements.
6.How does Aetrix verify that CYAT81682-100AS61ZT is sourced from the original manufacturer or authorized distributors?
All CYAT81682-100AS61ZT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CYAT81682-100AS61ZT meets industry standards.
7.What is the process for return or replacement of CYAT81682-100AS61ZT?
All CYAT81682-100AS61ZT units undergo pre-shipment inspection (PSI). If there is an issue with CYAT81682-100AS61ZT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CYAT81682-100AS61ZT part is unused and in its original packaging.
Return procedure for CYAT81682-100AS61ZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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