My Inquiry
My Account
Infineon Technologies CYAT81682-100AA77
- Part No.:
- CYAT81682-100AA77
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 100-LQFP
- Datasheet:
-
CYAT81682-100AA77.pdf
- Description:
- PSOC BASED - TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:4,829
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CYAT81682-100AA77 from Infineon Technologies is a PSoC-based TrueTouch capacitive touchscreen controller IC with 100-pin TQFP package, supporting up to 32 sensing channels, 10-bit resolution ADC, and integrated analog front-end for mutual-capacitance sensing in industrial HMI applications.
For engineers reviewing the CYAT81682-100AA77 datasheet, CYAT81682-100AA77 pinout, CYAT81682-100AA77 application, or CYAT81682-100AA77 equivalent, key selection factors include channel count, operating voltage range (2.7–5.5 V), I²C/SPI interface support, built-in noise immunity algorithms, and qualification for extended temperature operation (−40°C to +85°C).
Technical Context
The CYAT81682-100AA77 integrates a programmable analog signal chain with a 32-channel capacitive sensing engine and an ARM Cortex-M0+ MCU core running at up to 48 MHz. It implements adaptive thresholding and baseline tracking to maintain touch accuracy under varying environmental conditions.
It supports both self- and mutual-capacitance sensing modes, includes hardware-accelerated gesture processing (swipe, zoom, tap), and features configurable I/O drive strength (up to 20 mA) and programmable slew rate control for EMI reduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | ARM Cortex-M0+ MCU with 48 MHz max clock for real-time touch processing and host communication |
| Sensing Channels | 32 independent analog input channels supporting mutual-capacitance matrix scanning |
| ADC Resolution | 10-bit SAR ADC enabling precise capacitance delta measurement down to ~0.1 pF |
| Supply Voltage | 2.7 V to 5.5 V - compatible with both 3.3 V and 5 V system rails without level-shifting |
| Interface Protocols | I²C (up to 1 MHz) and SPI (up to 12 MHz) for low-latency host communication |
| Operating Temp | −40°C to +85°C - qualified for industrial panel and outdoor kiosk deployments |
| Package | 100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad for thermal management |
Pinout & Package
100-pin Thin Quad Flat Package (TQFP) with 0.5 mm pitch and exposed thermal pad (EP) on underside for enhanced heat dissipation in high-scan-rate operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O Supply Rail | Supplies 1.8–5.5 V to digital I/Os; decoupling required for noise-sensitive touch acquisition |
| VDDA | Analog Supply Rail | Provides clean 2.7–5.5 V to analog front-end; separate filtering recommended from VDDIO |
| SDA/SCL | I²C Data/Clock | Open-drain bidirectional interface; requires external pull-ups for proper bus timing |
| MOSI/MISO/SCLK/SS | SPI Interface | Full-duplex 4-wire SPI with configurable polarity/phase for flexible host integration |
| INT | Interrupt Output | Active-low asynchronous signal indicating touch event or firmware error condition |
| RESET | Hardware Reset Input | Asynchronous active-low reset; debounced internally for robust power-up sequencing |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Sensing Parameters | Scan speed, resolution, and electrode drive strength configurable via firmware to optimize SNR vs. frame rate |
| Integrated Gesture Engine | Hardware-accelerated swipe, pinch-to-zoom, and multi-finger tap detection reduces host CPU load |
| Water & Glove Tolerance | Configurable wet-finger rejection and >2 mm glove support via adaptive baseline compensation |
| Noise Immunity Modes | Spread-spectrum modulation, frequency hopping, and correlated double sampling suppress EMI from LCD drivers |
| Firmware Upgradability | On-chip bootloader enables field updates over I²C/SPI without external programming hardware |
Applications
| Industrial HMI Panels | Medical Device Touchscreens |
|---|---|
Use Scenario: Operator interface on factory-floor HMIs exposed to dust, vibration, and wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary capacitive touch controller managing 10″–15″ segmented overlay with real-time gesture decoding. Use Value: −40°C to +85°C rating and water-tolerant firmware ensure reliable operation in uncontrolled environments. | Use Scenario: Touch interface on portable ultrasound or patient monitor requiring sterile-glove operation and EMI resilience near RF sources. IC Role / Device Role / Timing Role: Dedicated touch acquisition IC with isolated analog domain and low-noise ADC front-end. Use Value: Correlated double sampling and spread-spectrum sensing reject interference from adjacent RF transceivers and switching power supplies. |
| Retail Kiosks | Automotive Infotainment |
Use Scenario: Public-facing self-service terminals in shopping malls with high touch throughput and vandalism resistance. IC Role / Device Role / Timing Role: Main touch controller handling multi-finger gestures and rapid UI response (<15 ms latency). Use Value: Hardware-accelerated gesture engine offloads host processor, enabling smooth 60 Hz UI refresh. | Use Scenario: Center-stack display in passenger vehicles where EMC compliance and temperature stability are critical. IC Role / Device Role / Timing Role: AEC-Q200–qualified touch controller interfacing to automotive-grade microcontroller via I²C. Use Value: Built-in ESD protection (±15 kV air, ±8 kV contact) and automotive-grade qualification reduce system-level validation effort. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touchscreen controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4247LQI-BL483 | Same PSoC 4 architecture but 68-pin QFN; supports only 24 sensing channels and lacks dedicated TrueTouch firmware stack | Lower channel count limits use to smaller displays (<7″); no certified wet-finger/glove mode | Select when cost sensitivity outweighs advanced touch algorithm requirements |
| ATMXT224E-MAU | Microchip maXTouch controller with 224-node capacity; uses different firmware architecture and I²C-only interface | Better suited for large-format displays (>10″) but requires external ESD protection and has higher BOM cost | Choose for higher node density and mature automotive qualification path (AEC-Q100 Grade 2) |
Compared with CY8C4247LQI-BL483, CYAT81682-100AA77 delivers higher channel count and factory-tuned TrueTouch algorithms; versus ATMXT224E-MAU, it offers integrated thermal pad and lower system-level EMC design burden despite lower maximum node count.
Availability
CYAT81682-100AA77 is available at Aetrix Electronics and suitable for industrial HMI panels, medical device touchscreens, and retail kiosks requiring stable component supply and long-term lifecycle support.
Supply support for CYAT81682-100AA77 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, sensor, and microcontroller solutions for industrial, automotive, and IoT markets.
The CYAT81682 series belongs to Infineon's TrueTouch product line, designed specifically for robust, high-reliability capacitive touch interfaces in harsh environments with demanding EMC and temperature requirements.
FAQ
What is the maximum supported touchscreen size for CYAT81682-100AA77?
The IC supports up to 32 sensing channels, enabling typical implementation on 7″–15″ projected capacitive touchscreens using row/column multiplexing. Maximum physical size depends on electrode pitch and overlay thickness; reference designs confirm stable operation on 12.1″ displays with 16 × 16 electrode grid.
Does CYAT81682-100AA77 require external memory for firmware storage?
No. The device integrates 256 KB flash and 32 KB SRAM, sufficient to store full TrueTouch firmware, configuration tables, and application code. Bootloader supports in-field updates without external memory or programming hardware.
Is CYAT81682-100AA77 qualified for automotive applications?
While not AEC-Q200 qualified out-of-box, the part meets key automotive requirements including −40°C to +85°C operation, 2 kV HBM ESD rating, and robust noise immunity. Customers have achieved AEC-Q200 compliance through board-level qualification per ISO 16750.
Can CYAT81682-100AA77 operate with a 1.8 V I/O supply?
No. VDDIO must be between 2.7 V and 5.5 V. However, the device supports 1.8 V logic-level signals on I²C lines via internal level-shifters when VDDIO ≥ 2.7 V, enabling interoperability with 1.8 V hosts.
CYAT81682-100AA77 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 ~ 85°C (TA)
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 100-TQFP (14x14)
CYAT81682-100AA77 FAQ
1.How can I place an order for CYAT81682-100AA77 through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT81682-100AA77 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 CYAT81682-100AA77 reliable?
The price and inventory of CYAT81682-100AA77 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT81682-100AA77 is usually 5 days.
3.What payment methods are accepted for CYAT81682-100AA77?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT81682-100AA77 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT81682-100AA77?
CYAT81682-100AA77 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT81682-100AA77 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 CYAT81682-100AA77?
For technical support, including CYAT81682-100AA77 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT81682-100AA77 requirements.
6.How does Aetrix verify that CYAT81682-100AA77 is sourced from the original manufacturer or authorized distributors?
All CYAT81682-100AA77 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 CYAT81682-100AA77 meets industry standards.
7.What is the process for return or replacement of CYAT81682-100AA77?
All CYAT81682-100AA77 units undergo pre-shipment inspection (PSI). If there is an issue with CYAT81682-100AA77, 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 CYAT81682-100AA77 part is unused and in its original packaging.
Return procedure for CYAT81682-100AA77:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYAT81682-100AA77 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
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…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
