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Infineon Technologies CYAT837AZS88-42002
- Part No.:
- CYAT837AZS88-42002
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 128-LQFP
- Datasheet:
-
CYAT837AZS88-42002.pdf
- Description:
- PSOC BASED - TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:3,408
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Product details
Overview
CYAT837AZS88-42002 from Infineon is an AEC-Q100 qualified automotive-grade capacitive touchscreen controller with 32-bit Arm® Cortex® CPU, 88 sense I/Os, -40°C to 105°C operating range (Automotive-S), and integrated DSP for noise filtering and fast scanning. It supports 10-finger tracking, wet-finger and glove operation (≤5 mm), and up to 120 Hz refresh rate on displays up to 35-inch diagonal.
For engineers reviewing the CYAT837AZS88-42002 datasheet, CYAT837AZS88-42002 pinout, CYAT837AZS88-42002 application, or CYAT837AZS88-42002 equivalent, key selection criteria include its 128-pin TQFP package, DualSense water rejection, AutoArmor EMI mitigation, multi-phase TX capability (up to 150 kHz), and Android driver support in automotive HMI systems.
Technical Context
This device is a master controller in Infineon's PSoC™ Automotive Multitouch Generation 7XL multichip architecture, designed for high-noise automotive cabin environments. It implements register-configurable touch sensing with 192 dedicated ADC channels, enabling single-pass long-side scanning and real-time baseline adaptation to temperature and humidity drift.
The IC integrates DisplayArmor and AutoArmor technologies to suppress display noise and improve EMI immunity, while DualSense enables simultaneous self-capacitive and mutual-capacitive measurement for robust water rejection and large-object discrimination without firmware intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sense I/O Count | 88 pins - supports up to 10320 electrode intersections for large-format touchscreens |
| Operating Temp Range | -40°C to +105°C (Automotive-S) - qualified for under-dash and center-stack mounting |
| Refresh Rate | Up to 120 Hz - enables low-latency gesture response in infotainment UIs |
| TX Frequency | Up to 150 kHz - improves SNR in noisy automotive power domains |
| Host Interface | I²C slave at 1 Mbps - supports high-throughput touch report streaming to SoC |
| Power Supply | 1.71–1.95 V core / 3.0–5.5 V I/O & analog - enables flexible rail partitioning |
| Touch Resolution | Supports ≤5 mm finger detection - meets ISO 15008 readability requirements |
Pinout & Package
128-pin TQFP package (14 × 20 × 1.4 mm, 0.5-mm pitch), RoHS-compliant, tray-packaged.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | Digital I/O supply | 3.0–5.5 V input powering GPIO, I²C, and boot interface logic |
| VDDA | Analog supply | 3.0–5.5 V input for ADC reference and sensor TX/RX circuitry |
| VDDCORE | Core logic supply | 1.71–1.95 V input for Arm Cortex-M core and internal SRAM |
| SCL, SDA | I²C host interface | Open-drain bidirectional lines supporting 1 Mbps for low-latency touch reporting |
| SENSE[0:87] | Capsense electrode interface | 88 configurable analog front-end inputs for mutual/self-capacitive sensing |
| RESET_N | Active-low reset | Asynchronous hardware reset with internal pull-up; initiates bootloader or firmware reload |
Key Features
| Feature | Design Value |
|---|---|
| DualSense architecture | Simultaneous self- and mutual-capacitive measurement per electrode pair for reliable wet-finger and water rejection |
| AutoArmor EMI mitigation | Hardware-accelerated spread-spectrum TX and adaptive noise cancellation across 192 ADC channels |
| Glove mode switching | Automatic detection and seamless transition between thin (≤1 mm) and thick (≤5 mm) glove operation |
| Field-upgradable firmware | Secure bootloader supporting OTA updates via I²C without external programming hardware |
| Manufacturing test kit (MTK) | On-chip self-test routines for production-line electrode continuity, capacitance calibration, and SNR validation |
Applications
| Infotainment Touchscreen | Digital Instrument Cluster |
|---|---|
Use Scenario: 12–17-inch LCD/AMOLED touchscreen in center console with ambient light, vibration, and EMI exposure. IC Role / Device Role / Timing Role: Primary multitouch controller managing mutual-capacitive scan matrix, gesture engine, and I²C report generation. Use Value: 120 Hz refresh and AutoArmor enable responsive, jitter-free swipes even during radio transmission bursts. | Use Scenario: Driver-facing 10–12-inch TFT display with safety-critical touch controls for vehicle settings and ADAS menus. IC Role / Device Role / Timing Role: Safety-aware touch processor with automatic baseline tracking and large-object rejection to prevent accidental activation. Use Value: DualSense and wet-finger tracking ensure reliable operation during rain or condensation on the display surface. |
| Head-Up Display (HUD) Control Panel | Passenger Seat Entertainment |
Use Scenario: Compact physical+touch overlay panel adjacent to HUD projection zone, subject to thermal cycling and UV exposure. IC Role / Device Role / Timing Role: Low-power touch coordinator with 105°C rating and manufacturing test kit (MTK) for post-assembly calibration. Use Value: -40°C to +105°C qualification and integrated self-test reduce field failure risk in thermally stressed locations. | Use Scenario: Rear-seat 10-inch touchscreen with glove use, fingernail interaction, and shared multi-user access. IC Role / Device Role / Timing Role: Multi-finger gesture processor supporting 10-touch, fingernail detection, and automatic mode switching. Use Value: Thin/thick glove support and fingernail tracking enable intuitive control by children and adults wearing winter gloves. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive touchscreen controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CYAT837AZA88-42002 | Same silicon, -40°C to +85°C (Automotive-A) rating | Targeted for non-under-dash locations (e.g., overhead console) | Select when full Automotive-S temperature range is not required and cost optimization is prioritized |
| CYAT847AZS88-42002 | Slave controller in same multichip system; lacks master CPU and boot ROM | Used only in multi-chip configurations where CYAT837X serves as master | Select only as companion device in >35-inch or ultra-high-resolution designs requiring distributed sensing |
Compared with CYAT837AZA88-42002, this part adds extended temperature resilience for under-hood-adjacent mounting; compared with CYAT847AZS88-42002, it provides full standalone functionality including bootloader, Arm core, and host interface - eliminating need for external master coordination.
Availability
CYAT837AZS88-42002 is available at Aetrix Electronics and suitable for automotive infotainment systems, digital instrument clusters, and passenger entertainment modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for CYAT837AZS88-42002 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 automotive, power management, and security solutions, with global R&D and manufacturing infrastructure.
This device belongs to the PSoC™ Automotive Multitouch Generation 7XL product line, engineered specifically for AEC-Q100-compliant, high-reliability capacitive touch interfaces in modern vehicle cockpits.
FAQ
Is CYAT837AZS88-42002 pin-compatible with earlier PSoC Automotive touch controllers?
No. This part uses a 128-pin TQFP package with unique pin mapping optimized for Generation 7XL's dual-sensing architecture and AutoArmor signal paths. Migration from CY8CTMA or CY8CMBR devices requires PCB redesign and firmware adaptation due to changes in ADC channel routing and I/O configuration registers.
Does CYAT837AZS88-42002 require an external crystal or oscillator?
No. The device integrates a factory-trimmed internal RC oscillator for system clock generation and supports optional external clock input (up to 24 MHz) on CLKIN for synchronization with display timing controllers. No external crystal is needed for basic operation.
What bootloader protocols does CYAT837AZS88-42002 support?
It supports I²C-based secure bootloader with AES-128 encrypted firmware image loading. Bootloader version is fixed in ROM and cannot be updated; however, application firmware updates are authenticated and decrypted in real time using keys stored in eFuses or external secure element.
Can CYAT837AZS88-42002 drive metal-mesh sensors?
Yes. Its 5-V TX output with high-order multi-phase capability delivers sufficient drive strength and SNR margin for metal-mesh electrodes with typical sheet resistance up to 10 Ω/sq and trace widths ≥15 µm, as validated in Infineon's reference design RD-GEN7XL-MESH.
CYAT837AZS88-42002 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)
CYAT837AZS88-42002 FAQ
1.How can I place an order for CYAT837AZS88-42002 through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT837AZS88-42002 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 CYAT837AZS88-42002 reliable?
The price and inventory of CYAT837AZS88-42002 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT837AZS88-42002 is usually 5 days.
3.What payment methods are accepted for CYAT837AZS88-42002?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT837AZS88-42002 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT837AZS88-42002?
CYAT837AZS88-42002 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT837AZS88-42002 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 CYAT837AZS88-42002?
For technical support, including CYAT837AZS88-42002 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT837AZS88-42002 requirements.
6.How does Aetrix verify that CYAT837AZS88-42002 is sourced from the original manufacturer or authorized distributors?
All CYAT837AZS88-42002 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 CYAT837AZS88-42002 meets industry standards.
7.What is the process for return or replacement of CYAT837AZS88-42002?
All CYAT837AZS88-42002 units undergo pre-shipment inspection (PSI). If there is an issue with CYAT837AZS88-42002, 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 CYAT837AZS88-42002 part is unused and in its original packaging.
Return procedure for CYAT837AZS88-42002:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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