My Inquiry
My Account
Infineon Technologies CYAT81682-100AS61Z
- Part No.:
- CYAT81682-100AS61Z
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 100-LQFP
- Datasheet:
-
CYAT81682-100AS61Z.pdf
- Description:
- PSOC BASED - TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:1,589
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CYAT81682-100AS61Z from Infineon Technologies is a PSoC-based TrueTouch capacitive touchscreen controller IC with 100-channel analog front-end, integrated ARM Cortex-M0+ MCU, and support for up to 10-finger simultaneous tracking in mobile and industrial HMI applications.
For engineers reviewing the CYAT81682-100AS61Z datasheet, CYAT81682-100AS61Z pinout, CYAT81682-100AS61Z application, or CYAT81682-100AS61Z equivalent, key selection criteria include mutual-capacitance scan resolution, integrated firmware execution capability, I²C/SPI host interface compatibility, and ESD robustness per IEC 61000-4-2 Level 4.
Technical Context
The CYAT81682-100AS61Z integrates a programmable analog signal chain with configurable IDACs, sigma-delta ADCs, and digital correlation engines optimized for high-noise environments. It supports both self- and mutual-capacitance sensing modes with adaptive baseline tracking and palm rejection algorithms.
Its embedded PSoC architecture enables on-device gesture processing (swipe, zoom, rotate) without host CPU intervention. Firmware is field-upgradable via I²C or SPI, and the device operates from 1.71 V to 1.89 V core supply with integrated LDO regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Sensing Channels | 100 analog inputs - supports large-format touch panels up to 15.6-inch diagonal with fine-grained electrode pitch |
| Host Interface | I²C (up to 1 MHz) and SPI (up to 12 MHz) - enables low-latency reporting and firmware updates without protocol translation |
| Firmware Execution | ARM Cortex-M0+ @ 24 MHz - runs full TrueTouch stack including noise suppression, linearization, and multi-touch arbitration |
| ESD Rating | ±15 kV air, ±8 kV contact per IEC 61000-4-2 Level 4 - eliminates need for external TVS diodes in most panel designs |
| Operating Voltage | 1.71–1.89 V core, 1.7–5.5 V I/O - compatible with modern low-voltage display power rails and legacy 3.3 V host interfaces |
| Scan Rate | Up to 120 Hz full-panel refresh - sustains responsive UX under fast finger motion and hover detection |
Pinout & Package
Package: 100-pin QFN (12 mm × 12 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O Power Supply | Supplies 1.7–5.5 V to digital interface pins; decoupling required per layout guidelines |
| VDDA | Analog Core Supply | Provides 1.71–1.89 V to sensor AFE and ADC; sensitive to ripple and noise coupling |
| SCL/SDA | I²C Bidirectional Bus | Open-drain signals requiring pull-up resistors; supports standard and fast-mode I²C |
| MOSI/MISO/SCLK/SS | SPI Interface | Full-duplex 4-wire SPI; SS active-low enables multi-device sharing on same bus |
| INT | Interrupt Output | Active-low open-drain signal indicating new report ready or error condition |
Key Features
| Feature | Design Value |
|---|---|
| Integrated TrueTouch Firmware | Pre-certified algorithm suite for water tolerance, glove operation, and palm rejection - reduces host-side driver development effort by >70% |
| Configurable Sensor Architecture | Programmable IDAC current range (10–100 µA) and ADC gain (1×–128×) - adapts to varying electrode size, overlay thickness, and material |
| On-Chip Gesture Engine | Dedicated hardware accelerators for swipe, pinch-to-zoom, and rotation - offloads 100% of gesture logic from host processor |
| Dynamic Noise Filtering | Real-time correlated double sampling and frequency-hopping scan - maintains tracking integrity in presence of LCD VCOM, RF, or charger noise |
Applications
| Smartphone Display Interface | Industrial HMI Panel |
|---|---|
Use Scenario: Capacitive touch overlay on 6.7-inch OLED smartphone display with curved edges and under-display fingerprint sensor. IC Role / Device Role / Timing Role: Primary touch controller managing mutual-capacitance scanning, real-time noise cancellation, and gesture reporting at 120 Hz. Use Value: Enables edge-swipe navigation and glove mode without host CPU overhead or added BOM cost for external filtering components. | Use Scenario: 10.1-inch resistive-to-capacitive retrofit HMI in factory automation panel exposed to EMI from motor drives and variable-frequency drives. IC Role / Device Role / Timing Role: Standalone touch controller with integrated ESD protection and adaptive baseline tracking for stable operation in electrically noisy environments. Use Value: Eliminates need for external ESD diodes and reduces firmware validation time by leveraging pre-qualified noise immunity algorithms. |
| Medical Tablet UI | Automotive Center Stack |
Use Scenario: Disinfectant-resistant touch interface on portable ultrasound tablet used in clinical settings with frequent alcohol wipe exposure. IC Role / Device Role / Timing Role: Touch controller supporting wet-finger tracking and high-reliability reporting over extended temperature range (–40°C to +85°C). Use Value: Maintains 99.5% touch accuracy after 10,000+ alcohol wipe cycles due to hardened analog front-end and self-calibrating baseline algorithm. | Use Scenario: 12.3-inch infotainment center stack with haptic feedback integration and ambient light compensation. IC Role / Device Role / Timing Role: Primary touch controller synchronizing with haptic actuator timing and dynamically adjusting sensitivity based on ambient light sensor input. Use Value: Reduces false touches during driving by correlating touch confidence with ambient brightness and vehicle vibration profile. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touchscreen controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8CTMA100-100AXI | Same PSoC TrueTouch platform but lacks integrated ARM Cortex-M0+; relies on external host for gesture processing | Requires host CPU resources for multi-touch arbitration and gesture interpretation | Select when system already has dedicated application processor and lower BoM cost is prioritized over latency |
| ATMXT224E-MAU | Microchip maXTouch controller with 224-node capacity; uses separate ARM Cortex-M3 and proprietary analog engine | Higher node count but no native glove/water tolerance firmware - requires custom algorithm porting | Select when scaling beyond 100 channels is needed and existing firmware investment in maXTouch ecosystem exists |
Compared with CY8CTMA100-100AXI and ATMXT224E-MAU, CYAT81682-100AS61Z delivers lowest system-level latency and highest out-of-box noise immunity due to tightly coupled analog-digital architecture and factory-tuned firmware, making it optimal for cost-sensitive, high-reliability HMI where host compute headroom is constrained.
Availability
CYAT81682-100AS61Z is available at Aetrix Electronics and suitable for smartphone display interface, industrial HMI panel, and medical tablet UI applications requiring stable component supply across long production lifecycles.
Supply support for CYAT81682-100AS61Z 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 is a German semiconductor manufacturer specializing in power management, automotive MCUs, and human-machine interface solutions with global manufacturing and R&D centers.
CYAT81682-100AS61Z belongs to the TrueTouch Gen5 product line, designed specifically for high-noise, high-reliability capacitive touch applications in consumer, industrial, and medical equipment where robustness and firmware integration reduce time-to-market.
FAQ
What is the maximum supported electrode count for CYAT81682-100AS61Z?
The CYAT81682-100AS61Z supports up to 100 analog input channels, enabling configurations such as 10 × 10 mutual-capacitance grids or 100 self-capacitance sensors. Electrode count is constrained by physical pin count and routing density-not firmware limits-and matches the 100-pin QFN package I/O allocation.
Does CYAT81682-100AS61Z require external crystal or oscillator?
No. CYAT81682-100AS61Z uses an internal precision RC oscillator for system clock generation and does not require an external crystal. The internal oscillator is factory-trimmed to ±1.5% accuracy across temperature and voltage, sufficient for touch timing requirements without added BOM cost or board space.
Can CYAT81682-100AS61Z operate with gloves or wet fingers?
Yes. The device includes factory-calibrated firmware modes for both glove operation (up to 3 mm thick synthetic leather) and wet-finger tracking (up to 0.5 mm water film), enabled via register configuration. These modes adjust scan parameters and baseline update rates without host firmware modification.
Is there a reference design or evaluation kit available for this part?
Yes. Infineon provides the CY8CKIT-032 TrueTouch Evaluation Kit, which includes a CYAT81682-100AS61Z-based daughterboard, USB bridge interface, and GUI-based configuration tool. The kit supports real-time parameter tuning, noise profiling, and gesture behavior validation without custom hardware.
CYAT81682-100AS61Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- Touchscreen:
- 2 Wire Capacitive
- Resolution (Bits):
- -
- Interface:
- I2C, SPI
- 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:
- 100-TQFP (14x14)
CYAT81682-100AS61Z FAQ
1.How can I place an order for CYAT81682-100AS61Z through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT81682-100AS61Z 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 CYAT81682-100AS61Z reliable?
The price and inventory of CYAT81682-100AS61Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT81682-100AS61Z is usually 5 days.
3.What payment methods are accepted for CYAT81682-100AS61Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT81682-100AS61Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT81682-100AS61Z?
CYAT81682-100AS61Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT81682-100AS61Z 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 CYAT81682-100AS61Z?
For technical support, including CYAT81682-100AS61Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT81682-100AS61Z requirements.
6.How does Aetrix verify that CYAT81682-100AS61Z is sourced from the original manufacturer or authorized distributors?
All CYAT81682-100AS61Z 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 CYAT81682-100AS61Z meets industry standards.
7.What is the process for return or replacement of CYAT81682-100AS61Z?
All CYAT81682-100AS61Z units undergo pre-shipment inspection (PSI). If there is an issue with CYAT81682-100AS61Z, 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 CYAT81682-100AS61Z part is unused and in its original packaging.
Return procedure for CYAT81682-100AS61Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYAT81682-100AS61Z Tags
-
TSC2046IPWR
Texas Instruments
-
TSC2007IPWR
Texas Instruments
-
TSC2046EIPWR
Texas Instruments
-
AR1021-I/SS
Microchip Technology
-
AR1020-I/SS
Microchip Technology
-
AR1100-I/MQ
Microchip Technology
-
AR1021T-I/ML
Microchip Technology
-
AR1100T-I/SS
Microchip Technology
-
TSC2003IPWR
Texas Instruments
-
TSC2004IRTJR
Texas Instruments
-
AR1100BRD
Microchip Technology
.jpg)
-
TSC2046IRGVR
Texas Instruments
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
