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Infineon Technologies CYAT837AZS98-42002
- Part No.:
- CYAT837AZS98-42002
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 128-LQFP
- Datasheet:
-
CYAT837AZS98-42002.pdf
- Description:
- PSOC BASED - TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:720
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Product details
Overview
CYAT837AZS98-42002 from Infineon is an AEC-Q100 qualified automotive-grade capacitive touchscreen controller featuring a 32-bit Arm® Cortex® CPU, 98 sense I/Os, 128-pin TQFP package, -40°C to 105°C operating range (Automotive-S), and support for 10-finger multitouch with thin/thick glove operation on up to 35-inch displays.
For engineers reviewing the CYAT837AZS98-42002 datasheet, CYAT837AZS98-42002 pinout, CYAT837AZS98-42002 application, or CYAT837AZS98-42002 equivalent, key selection criteria include glove/water rejection capability, DualSense wet-finger tracking, I²C host interface (up to 1 Mbps), 192-channel ADC architecture, and AutoArmor EMI mitigation for infotainment and digital cockpit systems.
Technical Context
This device implements a multi-chip PSoC™ Automotive Multitouch Generation 7XL architecture with dedicated DSP for real-time touch data filtering and single-pass long-side scanning across up to 296 sense pins. It uses high-order multi-phase TX (up to 150 kHz) and 5-V VCCTX to achieve effective 20-V drive for improved SNR.
The controller integrates register-configurable noise-suppression technologies including DisplayArmor and AutoArmor, supports automatic baseline tracking against environmental drift, and enables field upgrades via bootloader - all within a deterministic 120 Hz refresh rate configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 32-bit Arm® Cortex® - provides real-time firmware execution for touch algorithm processing and host communication management. |
| Sense I/O Count | 98 - enables support for large-format touch sensors with up to 10320 intersections and 35-inch diagonal display coverage. |
| Operating Temp | -40°C to +105°C (Automotive-S) - qualified for under-hood and front-panel infotainment applications requiring extended thermal stability. |
| Host Interface | I²C slave at 1/0.4/0.1 Mbps - allows flexible integration with automotive SoCs and microcontrollers without requiring additional protocol translation. |
| Power Supply | 1.71–1.95 V & 3.0–5.5 V logic; 3.0–5.5 V analog - dual-rail operation supports low-voltage digital logic while maintaining analog signal integrity. |
| Touch Performance | 10-finger tracking, 5-mm thin glove, 5-mm fingernail, large object rejection - ensures robust UI interaction in diverse environmental and user conditions. |
| Package | 128-pin TQFP, 14 × 20 × 1.4 mm, 0.5-mm pitch - surface-mount compatible with standard automotive PCB assembly processes and thermal cycling reliability. |
Pinout & Package
128-pin TQFP (14 × 20 × 1.4 mm, 0.5-mm pitch) with exposed thermal pad; RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | Digital I/O supply | Supplies 1.71–1.95 V or 3.0–5.5 V to GPIOs and digital logic; decoupling required per Infineon layout guidelines. |
| VDDA | Analog supply | Provides clean 3.0–5.5 V power to 192-channel ADC array and sensor front-end; separate ground plane recommended. |
| SCL / SDA | I²C host interface | Supports 1 Mbps fast-mode plus; internal pull-ups disabled by default - external termination required for automotive bus noise immunity. |
| RESETn | Active-low reset input | Asynchronous hardware reset with glitch filter; initiates bootloader or application firmware reload depending on boot mode configuration. |
| INT | Interrupt output | Open-drain signal asserted when new touch data is ready or system event (e.g., water detection, glove mode switch) occurs. |
Key Features
| Feature | Design Value |
|---|---|
| DualSense wet-finger tracking | Simultaneous self- and mutual-capacitance measurement enables reliable touch detection during rain, condensation, or high-humidity cabin environments. |
| AutoArmor EMI mitigation | Integrated hardware-level suppression of emissions and immunity improves compliance with CISPR 25 Class 5 and ISO 11452-2 without external shielding. |
| Multi-phase TX drive (17-phase) | Delivers effective 20-V drive using 5-V VCCTX supply, increasing SNR by >12 dB versus single-phase architectures for noisy automotive displays. |
| Manufacturing Test Kit (MTK) support | Enables factory calibration and functional verification of touch sensor stackup prior to vehicle integration, reducing end-of-line test time. |
| Android driver support | Pre-integrated HAL layer and kernel modules accelerate Android Automotive OS integration for Tier 1 infotainment head units. |
Applications
| Infotainment Display Control | Digital Instrument Cluster |
|---|---|
Use Scenario: Capacitive touch overlay on 12.3-inch TFT-LCD cluster display with ambient temperature cycling from -40°C to 105°C. IC Role / Device Role / Timing Role: Primary touch controller managing 77-sense-pin sensor matrix, executing real-time gesture recognition, and reporting position data over I²C at 120 Hz. Use Value: DualSense and AutoArmor ensure consistent finger tracking despite condensation buildup and EMI from adjacent CAN/LIN buses. | Use Scenario: 10.25-inch AMOLED center display in premium sedan with glove operation requirement (≤5 mm thickness) and water splash resistance. IC Role / Device Role / Timing Role: Master controller in multi-chip configuration handling 98-sense-pin sensor, coordinating with slave devices via internal inter-chip interface. Use Value: 10-finger multitouch with thin-glove support enables intuitive pinch-to-zoom and swipe gestures even with winter driving gloves. |
| Head-Up Display (HUD) Touch Overlay | Passenger Seat Entertainment Panel |
Use Scenario: Small-form-factor projected capacitive overlay on curved HUD combiner glass with metal mesh electrodes and narrow electrode pitch (6 mm). IC Role / Device Role / Timing Role: High-SNR touch acquisition engine using 17-phase TX and integrated DSP to reject optical interference and display switching noise. Use Value: Effective 20-V drive and single-pass long-side scanning reduce latency to <8 ms, enabling responsive virtual button actuation aligned with HUD projection timing. | Use Scenario: 15.6-inch plastic-film (PET) touchscreen mounted on rear-seat armrest, subject to repeated mechanical stress and variable lighting. IC Role / Device Role / Timing Role: Self-calibrating controller performing automatic baseline tracking and large-object rejection to ignore accidental palm contact. Use Value: Fingernail tracking and 5-mm-thin-finger support allow precise text entry and media control without stylus dependency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive touchscreen controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CYAT837AZA98-42002 | Same silicon, Automotive-A (-40°C to +85°C) temp grade; identical pinout and firmware compatibility. | Targeted for center console or non-under-hood locations where extended temperature range is not required. | Select when cost optimization is prioritized and full Automotive-S thermal margin is unnecessary. |
| CYAT847AZS98-42002 | Slave device in multi-chip topology; lacks master boot logic and inter-chip arbitration circuitry. | Used only as secondary controller in daisy-chained configurations supporting >98 sense pins or ultra-large displays. | Select only when scaling beyond 98 sense I/Os using master-slave architecture; not standalone-replaceable. |
Compared with CYAT837AZS98-42002, the CYAT837AZA98-42002 offers identical functionality at lower thermal cost, while CYAT847AZS98-42002 serves strictly as a slave extension - neither provides drop-in replacement capability without board-level reconfiguration.
Availability
CYAT837AZS98-42002 is available at Aetrix Electronics and suitable for automotive infotainment systems, digital instrument clusters, and passenger entertainment panels requiring stable component supply, AEC-Q100 qualification, and extended temperature operation.
Supply support for CYAT837AZS98-42002 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global R&D and manufacturing infrastructure.
This device belongs to the PSoC™ Automotive Multitouch Generation 7XL product line, designed specifically for high-reliability, noise-immune capacitive touch sensing in next-generation automotive cockpits and ADAS human-machine interfaces.
FAQ
What is the maximum supported touchscreen size and electrode pitch for CYAT837AZS98-42002?
The device supports touchscreen sizes up to 35-inch diagonal with a minimum electrode pitch of 6 mm. This is enabled by its 98 sense I/Os, 296 total sense pins, and 192-channel ADC architecture that permits single-pass long-side scanning for large-area coverage without sacrificing resolution or SNR.
Does CYAT837AZS98-42002 require external memory or can it run firmware entirely from internal storage?
CYAT837AZS98-42002 includes embedded flash and RAM sufficient to store and execute the complete touch firmware stack, including boot code, sensor calibration tables, and gesture algorithms. External memory is optional and used only for advanced features like dynamic firmware updates or extended log storage.
How does DualSense technology improve performance in wet or humid environments?
DualSense simultaneously acquires self-capacitance (for proximity and large-object detection) and mutual-capacitance (for precise finger location) signals. This dual-mode operation allows the device to distinguish true finger contact from water droplets or condensation based on differential response signatures, enabling reliable wet-finger tracking without false triggers.
Is CYAT837AZS98-42002 compatible with both Linux and Android Automotive OS platforms?
Yes - Infineon provides validated Android HAL drivers and Linux kernel modules (including input subsystem integration) for CYAT837AZS98-42002. These drivers support standard ABS_MT_* events and are certified for Android Automotive OS versions 11 through 13 in production Tier 1 deployments.
CYAT837AZS98-42002 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 128-LQFP
- Touchscreen:
- 2 Wire Capacitive
- Resolution (Bits):
- -
- Interface:
- I2C
- 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:
- 128-TQFP (14x20)
CYAT837AZS98-42002 FAQ
1.How can I place an order for CYAT837AZS98-42002 through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT837AZS98-42002 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 CYAT837AZS98-42002 reliable?
The price and inventory of CYAT837AZS98-42002 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT837AZS98-42002 is usually 5 days.
3.What payment methods are accepted for CYAT837AZS98-42002?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT837AZS98-42002 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT837AZS98-42002?
CYAT837AZS98-42002 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT837AZS98-42002 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 CYAT837AZS98-42002?
For technical support, including CYAT837AZS98-42002 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT837AZS98-42002 requirements.
6.How does Aetrix verify that CYAT837AZS98-42002 is sourced from the original manufacturer or authorized distributors?
All CYAT837AZS98-42002 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 CYAT837AZS98-42002 meets industry standards.
7.What is the process for return or replacement of CYAT837AZS98-42002?
All CYAT837AZS98-42002 units undergo pre-shipment inspection (PSI). If there is an issue with CYAT837AZS98-42002, 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 CYAT837AZS98-42002 part is unused and in its original packaging.
Return procedure for CYAT837AZS98-42002:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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