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Infineon Technologies CYAT847AZS77-42002
- Part No.:
- CYAT847AZS77-42002
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 128-LQFP
- Datasheet:
-
CYAT847AZS77-42002.pdf
- Description:
- PSOC BASED - TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:4,249
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Product details
Overview
CYAT847AZS77-42002 from Infineon is an AEC-Q100 qualified automotive-grade capacitive touchscreen controller (slave device in multichip architecture), featuring 32-bit Arm® Cortex® CPU, 77 sense I/Os, -40°C to 105°C operating range (Automotive-S grade), and integrated DSP for noise filtering. It enables 10-finger tracking with thin/thick glove support, wet-finger rejection, and up to 120 Hz refresh rate on touchscreens up to 35-inch diagonal.
For engineers reviewing the CYAT847AZS77-42002 datasheet, CYAT847AZS77-42002 pinout, CYAT847AZS77-42002 application, or CYAT847AZS77-42002 equivalent, key selection criteria include glove/water tolerance, SNR optimization via multi-phase TX, host interface compatibility (I²C up to 1 Mbps), and thermal robustness for infotainment display systems.
Technical Context
This slave controller operates in coordinated multichip configurations with master devices (e.g., CYAT837X series) to scale sensing capacity across large-area touch panels. It implements DualSense technology for simultaneous self-capacitance and mutual-capacitance measurement, and AutoArmor for EMI immunity enhancement through adaptive signal conditioning and baseline drift compensation.
The device uses 192-channel parallel ADC architecture with per-channel digital signal processing, enabling single-pass long-side scanning. Its 5-V TX drive with up to 17-phase multi-phase capability delivers effective 20-V output for improved SNR, while supporting configurable TX frequencies up to 150 kHz and electrode pitch down to 6 mm.
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 +105°C (Automotive-S grade), validated for under-hood and dashboard mounting |
| Host Interface | I²C slave at 100 kbps / 400 kbps / 1 Mbps, enabling low-latency communication with MCU hosts |
| TX Drive Capability | 5-V VCCTX supply with 17-phase multi-phase modulation yielding effective 20-V output for SNR boost |
| Refresh Rate | Configurable up to 120 Hz, supporting responsive UI in automotive infotainment displays |
| Touch Reporting | Up to 10 simultaneous touches with 5-mm minimum finger size detection |
| Power Consumption | 174 mW typical in 2-chip solution configuration at full operation |
Pinout & Package
Package: 128-pin TQFP (14 × 20 × 1.4 mm, 0.5-mm pitch), RoHS-compliant, automotive-qualified lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | Digital I/O supply | 1.71–1.95 V or 3.0–5.5 V logic rail; supports mixed-voltage host interfacing |
| VDDA | Analog supply | 3.0–5.5 V analog domain input for ADC reference and TX driver stability |
| SCL / SDA | I²C bus interface | Open-drain bidirectional lines compliant with standard/fast/high-speed I²C protocols |
| RESET_N | Active-low reset input | Asynchronous hardware reset triggering bootloader or cold start initialization |
| INT_N | Interrupt output | Push-pull or open-drain configurable alert signaling touch event or error condition |
| SENSE[0:76] | Capsense electrode inputs | 77 dedicated analog front-end channels supporting mutual/self-capacitance acquisition |
Key Features
| Feature | Design Value |
|---|---|
| DualSense sensing architecture | Simultaneous self- and mutual-capacitance measurement per channel for robust wet/finger/glove discrimination |
| AutoArmor EMI mitigation | Real-time adaptive signal conditioning that reduces radiated emissions and improves immunity without external shielding |
| Water rejection & wet-finger tracking | Algorithmic separation of water droplet signals from true touch events, maintaining usability in humid environments |
| Glove mode auto-switching | Automatic activation of high-sensitivity scanning when thick (≤5-mm) or thin (≤1-mm) gloves are detected |
| Field-upgradable firmware | Secure bootloader enabling over-the-air or service-center updates without hardware replacement |
Applications
| Automotive Infotainment Display | Center Console Touch Interface |
|---|---|
Use Scenario: 12–17-inch LCD/AMOLED center stack display in passenger vehicles requiring reliable operation under condensation, glove use, and EMI-rich cabin environments. IC Role / Device Role / Timing Role: Slave controller in multichip PSoC Automotive Gen 7XL architecture, handling electrode scanning and raw data preprocessing before aggregation by master IC. Use Value: Enables 10-finger gesture recognition with ≤5-mm glove support and automatic water rejection-critical for safety-critical UI responsiveness. | Use Scenario: Integrated touch control surface embedded in center console trim, exposed to temperature cycling (-40°C to +105°C) and mechanical vibration. IC Role / Device Role / Timing Role: Dedicated sensor hub managing 77-electrode mesh layout with real-time baseline tracking to compensate for thermal drift. Use Value: Maintains consistent touch sensitivity across extreme ambient conditions without recalibration, reducing field failure rates. |
| Head-Up Display (HUD) Touch Overlay | Passenger Seat Entertainment Panel |
Use Scenario: Transparent capacitive overlay mounted on curved HUD combiner glass, requiring high SNR to overcome optical interference and low reflectivity. IC Role / Device Role / Timing Role: High-frequency TX driver (up to 150 kHz) with multi-phase modulation delivering effective 20-V excitation for signal integrity on low-capacitance electrodes. Use Value: Achieves stable finger detection despite minimal electrode area and parasitic coupling from underlying optics. | Use Scenario: Rear-seat 10-inch touchscreen in commercial fleet vehicles, subject to repeated glove use and cleaning with alcohol-based solutions. IC Role / Device Role / Timing Role: DualSense-enabled slave node providing independent self-capacitance (for palm rejection) and mutual-capacitance (for precision touch) data streams. Use Value: Supports simultaneous adult/child interaction with large-object rejection and fingernail tracking-improving accessibility and durability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multitouch controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CYAT847AZA77-42002 | Same silicon, -40°C to +85°C (Automotive-A) temp grade vs. +105°C (S grade) | Targeted at non-under-dash locations where peak ambient temperature remains below 85°C | Select for cost-sensitive interior modules not exposed to direct sunlight or engine heat |
| CYAT837AZS77-42002 | Master controller in same Gen 7XL family; includes boot ROM, host interface, and system coordination logic | Required as system coordinator in multichip deployments; cannot operate standalone as slave | Use only as companion to CYAT847-series slaves-never as functional substitute |
Compared with CYAT847AZA77-42002, this S-grade variant ensures reliability in high-temperature zones like instrument clusters; versus CYAT837AZS77-42002, it lacks master functionality but offers optimized power/performance balance for distributed sensing nodes.
Availability
CYAT847AZS77-42002 is available at Aetrix Electronics and suitable for automotive infotainment displays, center console interfaces, and head-up display overlays requiring stable component supply across extended temperature ranges and rigorous EMI environments.
Supply support for CYAT847AZS77-42002 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.
CYAT847X belongs to the PSoC™ Automotive Multitouch Generation 7XL product line, designed specifically for scalable, high-reliability capacitive touch systems in automotive cockpits where environmental resilience and functional safety compliance are mandatory.
FAQ
Is CYAT847AZS77-42002 a standalone touchscreen controller?
No. It functions exclusively as a slave device in multichip configurations with a master controller (e.g., CYAT837X series). It lacks boot ROM, host interface logic, and system-level coordination circuitry required for autonomous operation.
What distinguishes the 'S' suffix in CYAT847AZS77-42002?
The 'S' denotes Automotive-S temperature grade (-40°C to +105°C), qualifying the device for placement in high-heat zones such as instrument clusters or center consoles near HVAC ducts, unlike the 'A' grade (-40°C to +85°C).
Does CYAT847AZS77-42002 support Android natively?
Yes. Infineon provides certified Android drivers and HAL integration packages for this part, enabling out-of-box compatibility with Android Automotive OS versions 10 through 13 in production infotainment platforms.
Can CYAT847AZS77-42002 be used with metal-mesh sensors?
Yes. The datasheet explicitly confirms support for metal-mesh touch sensors, including compatibility with fine-pitch (<6 mm) electrode layouts and high-aspect-ratio (16:10) geometries common in premium automotive displays.
CYAT847AZS77-42002 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)
CYAT847AZS77-42002 FAQ
1.How can I place an order for CYAT847AZS77-42002 through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT847AZS77-42002 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 CYAT847AZS77-42002 reliable?
The price and inventory of CYAT847AZS77-42002 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT847AZS77-42002 is usually 5 days.
3.What payment methods are accepted for CYAT847AZS77-42002?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT847AZS77-42002 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT847AZS77-42002?
CYAT847AZS77-42002 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT847AZS77-42002 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 CYAT847AZS77-42002?
For technical support, including CYAT847AZS77-42002 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT847AZS77-42002 requirements.
6.How does Aetrix verify that CYAT847AZS77-42002 is sourced from the original manufacturer or authorized distributors?
All CYAT847AZS77-42002 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 CYAT847AZS77-42002 meets industry standards.
7.What is the process for return or replacement of CYAT847AZS77-42002?
All CYAT847AZS77-42002 units undergo pre-shipment inspection (PSI). If there is an issue with CYAT847AZS77-42002, 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 CYAT847AZS77-42002 part is unused and in its original packaging.
Return procedure for CYAT847AZS77-42002:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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