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Infineon Technologies CYAT847AZA77-42002
- Part No.:
- CYAT847AZA77-42002
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 128-LQFP
- Datasheet:
-
CYAT847AZA77-42002.pdf
- Description:
- PSOC BASED - TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:2,785
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Product details
Overview
CYAT847AZA77-42002 from Infineon Technologies is an automotive-grade capacitive touchscreen controller IC, serving as a slave device in PSoC™ Automotive Multitouch Generation 7XL multichip systems. It features a 32-bit Arm® Cortex® CPU, supports up to 77 sense I/Os, operates across -40°C to 85°C (Automotive-A grade), delivers up to 120 Hz refresh rate, and enables ten-finger tracking with thin-glove support - deployed in infotainment touchscreens for premium automotive cockpits.
For engineers reviewing the CYAT847AZA77-42002 datasheet, CYAT847AZA77-42002 pinout, CYAT847AZA77-42002 application, or CYAT847AZA77-42002 equivalent, key selection criteria include its 128-pin TQFP package, glove/water rejection capability, DualSense architecture, I²C host interface (up to 1 Mbps), and AEC-Q100 qualification for functional safety-critical human-machine interfaces.
Technical Context
This IC functions exclusively as a slave controller in a master-slave multichip topology, coordinating with CYAT837X-series master devices to scale sensing capacity beyond single-chip limits. It integrates dedicated ADC per channel (192 channels total), supports high-order multi-phase TX (up to 150 kHz), and implements AutoArmor for simultaneous EMI emission and immunity improvement.
The device uses DualSense technology to independently process self-capacitance (for water rejection) and mutual-capacitance (for gesture fidelity), enabling robust wet-finger tracking and large-object rejection. Its register-configurable architecture allows runtime adaptation of electrode pitch (6 mm), scan resolution, and SNR optimization via 5-V TX drive and 17-phase modulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sense I/O Count | 77 dedicated sense pins for scalable electrode routing in large-format touch sensors |
| Operating Temp Range | -40°C to +85°C (Automotive-A grade), validated per AEC-Q100 Grade 2 requirements |
| Refresh Rate | Up to 120 Hz - enables low-latency gesture response in driver-facing HMI applications |
| Host Interface | I²C slave supporting 100 kbps / 400 kbps / 1 Mbps modes for real-time touch report streaming |
| TX Drive Capability | 5-V VCCTX with 17-phase multi-phase transmission, achieving effective 20-V drive for SNR enhancement |
| ADC Architecture | 192 independent sigma-delta ADCs - enables single-pass long-side scanning and parallel noise filtering |
| Glove Support | Detects 10 fingers with ≤1-mm-thick gloves; 2 fingers with ≤5-mm-thick gloves via automatic mode switching |
Pinout & Package
Package: 128-pin TQFP (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 GPIOs, I²C interface, and internal logic buffers |
| VDDA | Analog supply | 3.0–5.5 V input for ADC reference and sensor TX/RX circuitry |
| VSS | Ground reference | Common return path for analog/digital domains; requires separate low-noise layout |
| SCL / SDA | I²C host interface | Open-drain bidirectional lines for configuration, calibration, and touch report transfer |
| SENSE[0:76] | Capsense electrode inputs | 77 dedicated analog input pins for mutual/self-capacitance sensing matrix connections |
| RESET_N | Active-low reset | Asynchronous hardware reset line for system-level fault recovery and bootloader entry |
Key Features
| Feature | Design Value |
|---|---|
| DualSense architecture | Simultaneous self- and mutual-capacitance measurement enables reliable wet-finger tracking without false triggers |
| AutoArmor EMI management | Integrated hardware-based mitigation reduces radiated emissions and improves immunity during display switching transients |
| Field-upgradable firmware | Bootloader support enables over-the-air (OTA) touch algorithm updates without hardware revision |
| Manufacturing test kit (MTK) ready | Pre-integrated self-test routines simplify end-of-line calibration and yield validation in Tier-1 production |
| Android driver support | Reference HAL implementation accelerates integration into Android Automotive OS-based infotainment platforms |
Applications
| Infotainment Touchscreen | Digital Instrument Cluster |
|---|---|
Use Scenario: 12–17-inch LCD/AMOLED displays in center-stack or passenger-side consoles requiring multi-finger swipe, pinch-to-zoom, and haptic feedback synchronization. IC Role / Device Role / Timing Role: Slave controller handling bottom-half electrode scanning and reporting touch coordinates to master IC via internal inter-chip link. Use Value: 120 Hz refresh rate ensures sub-10 ms latency; glove/water rejection maintains usability in all weather conditions. | Use Scenario: Driver-focused 10–12-inch TFT clusters with safety-critical controls (e.g., ADAS settings, lighting, HVAC) requiring zero false touches under vibration and condensation. IC Role / Device Role / Timing Role: Dedicated slave unit managing right-side sensor zone, synchronized to master's global timing frame for deterministic report delivery. Use Value: AEC-Q100 qualification and -40°C to +85°C operation guarantee reliability across vehicle lifecycle and thermal profiles. |
| Head-Up Display (HUD) Control Panel | Passenger Seat Entertainment |
Use Scenario: Small-form-factor capacitive pad adjacent to HUD projection area, used for glance-and-tap interaction without taking eyes off road. IC Role / Device Role / Timing Role: Low-pin-count slave (77 I/O) optimized for compact 3×5 electrode grid; minimal PCB footprint with integrated DSP filtering. Use Value: 5-mm small-finger detection and automatic baseline tracking maintain accuracy despite ambient temperature drift and UV exposure. | Use Scenario: Rear-seat 10-inch touchscreen for media playback, navigation, and gaming - subject to frequent glove use and accidental palm contact. IC Role / Device Role / Timing Role: Secondary slave in dual-master configuration, handling independent sensor zone with configurable refresh rate (60–120 Hz). Use Value: Large-object rejection prevents palm misregistration; thin/thick glove mode switching occurs automatically without host intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multitouch controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CYAT847AZS77-42002 | Same functionality and pinout, but rated for -40°C to +105°C (Automotive-S grade) | Required for under-hood or near-engine HMI modules exposed to higher ambient temperatures | Select when operating ambient exceeds 85°C; otherwise identical firmware and layout compatibility |
| CYAT837AZA77-42002 | Master controller variant with identical 77-sense I/O count, same package, and complementary feature set | Used as system coordinator in multichip stacks; provides clock distribution, data aggregation, and host interface | Required alongside CYAT847AZA77-42002 in full 2-chip solutions; not interchangeable as standalone device |
Compared with CYAT847AZS77-42002, this part trades extended temperature range for cost and power efficiency in cabin-zone applications; versus CYAT837AZA77-42002, it lacks master timing control and host interface - defining strict role separation in scalable touchscreen architectures.
Availability
CYAT847AZA77-42002 is available at Aetrix Electronics and suitable for automotive infotainment systems, digital instrument clusters, and passenger seat entertainment units requiring stable component supply, AEC-Q100 compliance, and long-term manufacturing continuity.
Supply support for CYAT847AZA77-42002 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 microcontrollers, and sensing solutions, with global R&D and manufacturing infrastructure.
This device belongs to the PSoC™ Automotive Multitouch Generation 7XL product line, engineered specifically for scalable, safety-aware capacitive touch HMI in ISO 26262-aligned automotive electronics.
FAQ
Is CYAT847AZA77-42002 pin-compatible with CYAT847AZS77-42002?
Yes - both share identical 128-pin TQFP packaging, pin assignment, and electrical characteristics. The only difference is temperature grade: CYAT847AZA77-42002 is rated for -40°C to +85°C (Automotive-A), while CYAT847AZS77-42002 extends to +105°C (Automotive-S). Layout and firmware are fully interchangeable.
Does CYAT847AZA77-42002 support I²C clock stretching?
Yes - the device implements standard I²C slave behavior including clock stretching during internal processing cycles. This ensures reliable communication with slower hosts or during intensive touch data filtering, maintaining data integrity without packet loss or timeout errors.
Can CYAT847AZA77-42002 operate as a standalone touchscreen controller?
No - it is designed exclusively as a slave device in multichip configurations and requires a CYAT837X-series master IC for clock generation, host interface management, and aggregated report formatting. No standalone boot or configuration mode is supported.
What is the maximum electrode pitch supported with this controller?
The device supports up to 6-mm electrode pitch in standard configurations, validated for reliable signal coupling and noise immunity across PET and glass substrates. Pitch optimization depends on sensor stackup and firmware tuning - reference design guidelines specify 4–6 mm as optimal for 77-I/O layouts.
CYAT847AZA77-42002 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)
CYAT847AZA77-42002 FAQ
1.How can I place an order for CYAT847AZA77-42002 through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT847AZA77-42002 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 CYAT847AZA77-42002 reliable?
The price and inventory of CYAT847AZA77-42002 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT847AZA77-42002 is usually 5 days.
3.What payment methods are accepted for CYAT847AZA77-42002?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT847AZA77-42002 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT847AZA77-42002?
CYAT847AZA77-42002 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT847AZA77-42002 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 CYAT847AZA77-42002?
For technical support, including CYAT847AZA77-42002 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT847AZA77-42002 requirements.
6.How does Aetrix verify that CYAT847AZA77-42002 is sourced from the original manufacturer or authorized distributors?
All CYAT847AZA77-42002 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 CYAT847AZA77-42002 meets industry standards.
7.What is the process for return or replacement of CYAT847AZA77-42002?
All CYAT847AZA77-42002 units undergo pre-shipment inspection (PSI). If there is an issue with CYAT847AZA77-42002, 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 CYAT847AZA77-42002 part is unused and in its original packaging.
Return procedure for CYAT847AZA77-42002:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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