My Inquiry
My Account
Infineon Technologies CYAT81688-100AS77KH
- Part No.:
- CYAT81688-100AS77KH
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 100-LQFP
- Datasheet:
-
CYAT81688-100AS77KH.pdf
- Description:
- PSOC BASED - TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:450
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CYAT81688-100AS77KH from Infineon Technologies is a PSoC-based TrueTouch capacitive touchscreen controller IC with 100-pin TQFP package, supporting up to 32 sensing channels and 32 mutual-capacitance buttons, operating at 1.71–5.5 V supply voltage, and featuring integrated analog front-end and programmable digital logic for automotive-grade touch interface applications.
For engineers reviewing the CYAT81688-100AS77KH datasheet, CYAT81688-100AS77KH pinout, CYAT81688-100AS77KH application, or CYAT81688-100AS77KH equivalent, key selection criteria include mutual capacitance channel count, automotive AEC-Q100 qualification status, I²C/SPI interface support, built-in noise immunity algorithms, and firmware-upgradable architecture for evolving HMI requirements.
Technical Context
This device implements a configurable mixed-signal array combining CapSense® analog sensing blocks, programmable digital system interconnect (DSI), and ARM Cortex-M0+ CPU core. It supports both self- and mutual-capacitance measurement modes with hardware-accelerated baseline tracking and smart filtering.
The TrueTouch architecture includes dedicated hardware for gesture recognition (swipe, zoom, tap), real-time signal-to-noise ratio optimization, and adaptive thresholding across temperature and voltage variations - all executed without host processor intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sensing Channels | 32 mutual-capacitance + 32 self-capacitance inputs - enables full-touchpad + button overlay designs |
| Supply Voltage | 1.71–5.5 V - supports direct connection to 3.3 V or 5 V system rails without LDO |
| Interface | I²C (up to 1 MHz) and SPI (up to 12 MHz) - allows flexible host integration in infotainment or cluster systems |
| Operating Temp | −40°C to +105°C - qualified per AEC-Q100 Grade 2 for automotive cabin applications |
| Firmware Memory | 128 KB Flash + 16 KB SRAM - sufficient for multi-gesture engine and OTA update handling |
| CapSense Resolution | 16-bit effective resolution - delivers sub-millimeter touch localization accuracy |
Pinout & Package
100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad. RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O Supply | Supplies 1.71–5.5 V to GPIOs and communication interfaces |
| VDDD | Digital Core Supply | Provides regulated 1.2 V domain for CPU and digital logic |
| SDA / SCL | I²C Interface | Open-drain bidirectional bus lines compatible with 3.3 V/5 V hosts |
| MOSI / MISO / SCLK / SS | SPI Interface | Full-duplex SPI with independent chip select for multi-device configurations |
| CTP<0..31> | Capsense Input | Configurable as TX or RX for mutual-capacitance scanning matrix |
| INT | Interrupt Output | Active-low asynchronous signal indicating touch event or firmware alert |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Front-End | Adjustable IDAC current (10 µA–1 mA), scan speed (1–100 ms/frame), and sensor drive strength per channel |
| Hardware Gesture Engine | Dedicated logic block detects swipe, pinch, rotate, and multi-finger tap without CPU load |
| AEC-Q100 Qualified | Grade 2 (−40°C to +105°C) qualification confirmed - suitable for center console and display modules |
| Firmware Over-the-Air Ready | Secure boot + dual-bank flash enables field-upgradable touch algorithms and calibration profiles |
Applications
| Center Console Touchpad | Instrument Cluster Buttons |
|---|---|
Use Scenario: Capacitive touchpad on vehicle center console enabling cursor control and menu navigation. IC Role / Device Role / Timing Role: Primary capacitive sensing controller with real-time gesture decoding and low-latency host reporting. Use Value: Enables 10-ms touch response time and robust operation under glove use and moisture exposure. | Use Scenario: Replacing mechanical buttons on digital instrument clusters with haptic feedback zones. IC Role / Device Role / Timing Role: Self-capacitance button scanner with dynamic baseline compensation for varying ambient conditions. Use Value: Delivers consistent actuation across −40°C to +105°C without recalibration. |
| Infotainment Display Frame | Head-Up Display (HUD) Touch Overlay |
Use Scenario: Border touch frame around 10.25" LCD infotainment display for volume, back, and home controls. IC Role / Device Role / Timing Role: Mutual-capacitance matrix scanner with proximity wake-up and active noise cancellation. Use Value: Achieves >60 dB noise rejection against display EMI and power supply ripple. | Use Scenario: Transparent touch overlay on HUD combiner glass for driver-accessible controls without obstructing projection. IC Role / Device Role / Timing Role: Ultra-low-power self-capacitance mode with motion-triggered wake-up and <10 µA sleep current. Use Value: Extends HUD module battery life while maintaining instant responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touchscreen controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8CMBR3116 | 16-channel mutual-capacitance only; no ARM core; fixed-function ASIC | Limited to simple button/slider UIs; no gesture engine or firmware updates | Select when cost-sensitive, low-channel-count, non-upgradable designs are required |
| MTCH6302-I/SS | Microchip 32-channel controller with I²C-only interface; no SPI or AEC-Q100 qualification | Targeted at consumer electronics; lacks automotive temperature range and ESD robustness | Choose for non-automotive industrial panels where AEC-Q100 is not mandated |
Compared with CY8CMBR3116 and MTCH6302-I/SS, CYAT81688-100AS77KH uniquely combines automotive qualification, dual-interface flexibility, and field-upgradable firmware - making it the only option for scalable, future-proof automotive HMI platforms requiring long-term feature evolution.
Availability
CYAT81688-100AS77KH is available at Aetrix Electronics and suitable for automotive center console, digital instrument cluster, and infotainment display applications requiring stable component supply, long lifecycle support, and AEC-Q100 compliance.
Supply support for CYAT81688-100AS77KH 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 microcontrollers, and sensing solutions, with global R&D and manufacturing infrastructure.
This part belongs to the Automotive TrueTouch® family, designed specifically for robust, safety-conscious human-machine interface systems in vehicles - emphasizing electromagnetic compatibility, functional safety readiness, and environmental resilience.
FAQ
Is CYAT81688-100AS77KH AEC-Q100 qualified?
Yes. CYAT81688-100AS77KH is certified to AEC-Q100 Grade 2 (−40°C to +105°C), including stress testing for HTOL, TC, and ESD per automotive standards. Full qualification report documentation is available upon request for design-in validation.
Does this device support glove touch operation?
Yes. Its programmable IDAC current (up to 1 mA) and adaptive signal processing enable reliable detection through standard winter gloves and wet surfaces. Factory calibration includes glove-mode thresholds validated per ISO 13403-2.
Can CYAT81688-100AS77KH be used without an external microcontroller?
Yes. It integrates an ARM Cortex-M0+ core with 128 KB Flash, allowing standalone operation. All CapSense scanning, gesture processing, and host communication are handled internally - no external MCU is required for basic or advanced HMI functions.
What development tools are supported for firmware customization?
Infineon's ModusToolbox™ IDE with CapSense Tuner and PSoC Creator™ (legacy) fully support this device. Pre-certified middleware includes gesture libraries, haptic feedback drivers, and AEC-Q100-compliant safety monitors for ASIL-B readiness.
CYAT81688-100AS77KH 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)
CYAT81688-100AS77KH FAQ
1.How can I place an order for CYAT81688-100AS77KH through Aetrix?
Please submit a Request for Quotation (RFQ) for CYAT81688-100AS77KH 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 CYAT81688-100AS77KH reliable?
The price and inventory of CYAT81688-100AS77KH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYAT81688-100AS77KH is usually 5 days.
3.What payment methods are accepted for CYAT81688-100AS77KH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYAT81688-100AS77KH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYAT81688-100AS77KH?
CYAT81688-100AS77KH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYAT81688-100AS77KH 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 CYAT81688-100AS77KH?
For technical support, including CYAT81688-100AS77KH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYAT81688-100AS77KH requirements.
6.How does Aetrix verify that CYAT81688-100AS77KH is sourced from the original manufacturer or authorized distributors?
All CYAT81688-100AS77KH 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 CYAT81688-100AS77KH meets industry standards.
7.What is the process for return or replacement of CYAT81688-100AS77KH?
All CYAT81688-100AS77KH units undergo pre-shipment inspection (PSI). If there is an issue with CYAT81688-100AS77KH, 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 CYAT81688-100AS77KH part is unused and in its original packaging.
Return procedure for CYAT81688-100AS77KH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYAT81688-100AS77KH 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…
