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Infineon Technologies CYAT837AZA88-42002
- Part No.:
- CYAT837AZA88-42002
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 128-LQFP
- Datasheet:
-
CYAT837AZA88-42002.pdf
- Description:
- PSOC BASED - TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:4,088
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Product details
Overview
CYAT837AZA88-42002 from Infineon is an AEC-Q100 qualified automotive-grade capacitive touchscreen controller with 32-bit Arm® Cortex® CPU, 88 sense I/Os, 128-pin TQFP package, -40°C to 85°C operating range, and support for 10-finger multitouch, wet-finger tracking, and glove operation on displays up to 35-inch diagonal - deployed in infotainment touchscreens.
For engineers reviewing the CYAT837AZA88-42002 datasheet, CYAT837AZA88-42002 pinout, CYAT837AZA88-42002 application, or CYAT837AZA88-42002 equivalent, key selection factors include sense channel count (88), glove thickness support (≤5 mm), AutoArmor EMI mitigation, DualSense water rejection, and I²C host interface compliance at 1 Mbps.
Technical Context
This device is a master controller in a multichip PSoC™ Automotive Generation 7XL touchscreen system, implementing register-configurable capacitive sensing with integrated DSP for single-pass long-side scanning across up to 192 channels. It delivers up to 120 Hz refresh rate and supports multi-phase TX drive at up to 150 kHz with 5-V VCCTX supply.
The architecture integrates noise-suppression technologies including DisplayArmor and AutoArmor for simultaneous EMI emission reduction and immunity improvement, plus DualSense for independent wet/finger and dry/finger signal separation - enabling robust operation under condensation, rain, or high-humidity cabin environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sense I/O Count | 88 dedicated sense pins enabling high-resolution electrode mapping for large-format touchscreens |
| Operating Temp Range | -40°C to +85°C (Automotive-A grade) for reliable operation in instrument cluster and center-stack environments |
| Host Interface | I²C slave supporting 1 Mbps data rate for low-latency touch reporting in real-time HMI systems |
| Max Refresh Rate | 120 Hz - ensures responsive user interaction with minimal perceptible lag on dynamic UIs |
| TX Frequency Range | Up to 150 kHz - allows optimization of SNR and scan time trade-offs for varying sensor stackups |
| Power Supply | 1.71–1.95 V core / 3.0–5.5 V I/O & analog - supports mixed-voltage automotive board designs |
| Glove Support | Two fingers with ≤5-mm-thick gloves - enables usability with winter driving gloves without mode switching |
Pinout & Package
Package: 128-pin TQFP (14 × 20 × 1.4 mm, 0.5-mm pitch), RoHS-compliant, lead-free, automotive-qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | Digital I/O supply | 3.0–5.5 V input powering all GPIOs and I²C interface; decoupling required per automotive EMC |
| VDDA | Analog supply | 3.0–5.5 V input for ADCs and analog front-end; separate filtering mandatory for SNR integrity |
| VDDCORE | Core logic supply | 1.71–1.95 V input for Arm® Cortex® CPU and digital logic; tight regulation needed for stability |
| SCL / SDA | I²C host interface | Open-drain bidirectional lines supporting standard/fast/fast-plus modes up to 1 Mbps |
| INT# | Interrupt output | Active-low asynchronous signal indicating new touch report ready for host read |
| RESET# | Hardware reset input | Asynchronous active-low reset that initializes internal state and reboots firmware |
| SENSE[0:87] | Capacitive sense inputs | 88 dedicated analog inputs for mutual-capacitance electrode scanning; configurable as TX or RX |
Key Features
| Feature | Design Value |
|---|---|
| DualSense wet-finger tracking | Simultaneous independent detection of wet and dry finger signals using dual-sensing paths - eliminates false triggers during rain or condensation |
| AutoArmor EMI mitigation | Integrated hardware-level suppression of both emissions and susceptibility - reduces need for external shielding and layout revisions |
| 192-channel parallel ADC array | Enables single-pass full-panel scanning - cuts scan time by >3× vs sequential architectures and improves noise immunity |
| Field-upgradable bootloader | Secure over-the-air (OTA) or diagnostic port firmware updates without hardware rework - supports automotive software-defined vehicle requirements |
| Manufacturing Test Kit (MTK) support | Factory calibration and functional test via standardized interface - accelerates production line validation and yield ramp |
Applications
| Infotainment Touchscreen | Digital Instrument Cluster |
|---|---|
Use Scenario: 12–15-inch capacitive touchscreen overlaying LCD/AMOLED display in center console, exposed to ambient light, temperature swings, and occasional moisture. IC Role / Device Role / Timing Role: Master touchscreen controller performing mutual capacitance scanning, baseline drift compensation, and 10-finger gesture decoding at ≤120 Hz. Use Value: DualSense and AutoArmor ensure reliable touch detection during rain exposure and reduce EMI-induced jitter in adjacent CAN/FlexRay domains. | Use Scenario: 7–10-inch driver-facing display with glove operation requirement and high-brightness environment. IC Role / Device Role / Timing Role: Primary touch acquisition engine handling thin/thick glove detection, automatic mode switching, and fast-response UI navigation. Use Value: 5-mm glove support and ≤5 mm small-finger resolution enable intuitive control without UI scaling or dwell-time adjustments. |
| Head-Up Display (HUD) Control Panel | Passenger Seat Touch Interface |
Use Scenario: Compact tactile-free control surface adjacent to HUD projection zone, subject to thermal gradients and vibration. IC Role / Device Role / Timing Role: Low-power, high-SNR touch controller managing 2–4 virtual buttons with wet-finger rejection and auto-baseline tracking. Use Value: 260 mW (3-chip config) power envelope and 17-phase TX drive maintain SNR >45 dB despite proximity to optical components. | Use Scenario: Secondary touch surface on rear-seat armrest, used with bare hands or gloves, requiring durability and low false-trigger rate. IC Role / Device Role / Timing Role: Slave or standalone controller executing large-object rejection, fingernail tracking, and self-test diagnostics. Use Value: Integrated touchscreen sensor self-test and manufacturing test kit (MTK) support reduce field failure root-cause analysis time by >70%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive touchscreen controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CYAT837AZS88-42002 | Same 88-sense I/O, identical pinout, but rated for -40°C to +105°C (Automotive-S) | Required for center-console modules near HVAC vents or under direct sunlight exposure | Select when ambient operating temperature exceeds 85°C; otherwise identical functionality and firmware compatibility |
| CYAT847AZA88-42002 | Same package and temp grade, but configured as slave controller in multichip topology | Used only in multi-chip systems where CYAT837X serves as master; lacks standalone boot capability | Choose only when expanding electrode count beyond 88 pins using daisy-chained slave architecture |
Compared with CYAT837AZS88-42002, this part trades extended temperature range for lower cost and qualification margin; compared with CYAT847AZA88-42002, it provides full master functionality including bootloader execution and host interface management - critical for standalone touchscreen modules.
Availability
CYAT837AZA88-42002 is available at Aetrix Electronics and suitable for automotive infotainment systems, digital instrument clusters, and HUD control panels requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle assurance.
Supply support for CYAT837AZA88-42002 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, multi-chip capacitive touch systems in automotive cockpits - emphasizing EMI resilience, environmental robustness, and seamless integration with Android and AUTOSAR platforms.
FAQ
What is the maximum supported touchscreen size for CYAT837AZA88-42002?
The device supports screen sizes up to 35-inch diagonal with 16:10 aspect ratio and 6-mm electrode pitch. This capability derives from its 88 sense I/Os, 192-channel ADC array, and configurable scan engine - enabling high-resolution electrode grids for large-format displays without external multiplexing.
Does CYAT837AZA88-42002 require external memory for firmware storage?
No. The device integrates on-chip flash memory for firmware storage and executes code directly from internal non-volatile memory. Its bootloader supports field upgrades via I²C, eliminating dependency on external SPI Flash or EEPROM in most automotive implementations.
Can CYAT837AZA88-42002 operate with both glass and plastic (PET) sensor substrates?
Yes. The datasheet explicitly confirms support for both glass and PET substrates, as well as Sensor-on-Lens (SOL), metal mesh, and various display types including LCD, AMOLED, and IPS - enabled by programmable sensitivity, baseline tracking, and adaptive noise filtering.
Is Android driver support included out-of-the-box?
Yes. Infineon provides certified Android touch drivers compatible with Android versions 9 through 13, including HAL integration guidance and reference kernel patches. These drivers are delivered as part of the Manufacturing Test Kit (MTK) and validated on common SoM platforms like Qualcomm SA8155P and NXP i.MX8.
CYAT837AZA88-42002 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 ~ 85°C (TA)
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 128-TQFP (14x20)
CYAT837AZA88-42002 FAQ
1.How can I place an order for CYAT837AZA88-42002 through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT837AZA88-42002 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 CYAT837AZA88-42002 reliable?
The price and inventory of CYAT837AZA88-42002 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT837AZA88-42002 is usually 5 days.
3.What payment methods are accepted for CYAT837AZA88-42002?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT837AZA88-42002 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT837AZA88-42002?
CYAT837AZA88-42002 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT837AZA88-42002 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 CYAT837AZA88-42002?
For technical support, including CYAT837AZA88-42002 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT837AZA88-42002 requirements.
6.How does Aetrix verify that CYAT837AZA88-42002 is sourced from the original manufacturer or authorized distributors?
All CYAT837AZA88-42002 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 CYAT837AZA88-42002 meets industry standards.
7.What is the process for return or replacement of CYAT837AZA88-42002?
All CYAT837AZA88-42002 units undergo pre-shipment inspection (PSI). If there is an issue with CYAT837AZA88-42002, 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 CYAT837AZA88-42002 part is unused and in its original packaging.
Return procedure for CYAT837AZA88-42002:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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