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Infineon Technologies CYTMA445-48LQI36ZZAT
- Part No.:
- CYTMA445-48LQI36ZZAT
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
CYTMA445-48LQI36ZZAT.pdf
- Description:
- IC MCU 32BIT 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,208
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Product details
Overview
CYTMA445-48LQI36ZZAT from Cypress Semiconductor is a 32-bit ARM Cortex™-based multi-touch all-points touchscreen controller supporting up to 36 sense pins, 10-finger tracking, and 5.0-inch diagonal displays with 4.8-mm sensor pitch. It delivers fast first-touch response (≤13 ms), 300-Hz refresh rate, and integrated ChargerArmor™ noise immunity for battery-powered mobile devices.
For engineers reviewing the CYTMA445-48LQI36ZZAT datasheet, CYTMA445-48LQI36ZZAT pinout, CYTMA445-48LQI36ZZAT application, or CYTMA445-48LQI36ZZAT equivalent, key selection criteria include glove/water rejection capability, I²C/SPI interface flexibility, analog supply range (2.65–5.5 V), and QFN-48 package compatibility with high-density FPC routing.
Technical Context
The CYTMA445-48LQI36ZZAT implements a configurable capacitive sensing engine with DualSense™ architecture for simultaneous wet-finger and water rejection, plus automatic baseline tracking across temperature and humidity shifts. Its 32-bit ARM Cortex™ CPU executes real-time touch processing firmware and supports field upgrades via embedded bootloader.
It integrates TX slew-rate control, configurable SNR optimization (28-V effective drive), and external display synchronization to minimize mutual interference in AMOLED/LCD stackups. Communication is supported at I²C up to 3.4 Mbps and SPI up to 10 Mbps, with dedicated interrupt and reset signaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Sense Pins | 36 - enables 23 × 13 intersection matrix for 5.0-inch 16:9 touch panels |
| Touch Points | 10 fingers - full simultaneous tracking including fingernail and thin-glove (≤1 mm) |
| Refresh Rate | Up to 300 Hz - supports low-latency UI navigation and gesture responsiveness |
| Digital Supply | 1.71–5.5 V - compatible with single-cell Li-ion and wide-input PMIC rails |
| Analog Supply | 2.65–5.5 V - independent AVDD rail for optimized sensor signal integrity |
| Power (Active) | 6.75 mW average - enables sustained operation in portable battery-constrained designs |
| First-Touch Latency | ≤13 ms - meets Android touch responsiveness requirements for system-level UX |
Pinout & Package
48-pin 6 × 6 × 0.6-mm QFN package with 0.4-mm lead pitch, designed for compact mobile form factors and single-layer FPC routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | Digital I/O Supply | 1.71–5.5 V input powering GPIOs, I²C/SPI interfaces, and interrupt logic |
| AVDD | Analog Sensor Supply | 2.65–5.5 V dedicated rail for TX/RX analog front-end stability |
| SCL/SDA | I²C Interface | Standard-mode to high-speed mode (100 kbps–3.4 Mbps) slave communication |
| SCLK/MOSI/MISO/SS | SPI Interface | Full-duplex SPI up to 10 Mbps with configurable polarity/phase |
| INT | Interrupt Output | Open-drain active-low signal indicating new touch data ready for host read |
| RST | Hardware Reset Input | Asynchronous active-low reset for deterministic controller initialization |
| TX[0:15] | Transmit Electrode Drivers | 16 programmable TX outputs supporting flexible Manhattan/diamond/SOL sensor layouts |
| RX[0:19] | Receive Electrode Inputs | 20 differential RX inputs enabling up to 36 total sense lines (TX+RX combined) |
Key Features
| Feature | Design Value |
|---|---|
| DualSense™ Water Rejection | Enables reliable operation during rain, sweat, or wet-finger use without false triggers |
| Glove Mode Switching | Automatic detection and tracking of ≤1-mm thin gloves or ≤5-mm thick gloves without user intervention |
| ChargerArmor™ Noise Immunity | Withstands up to 35 VPP charger noise-critical for USB-C fast-charging mobile systems |
| External Display Sync | Reduces visual artifacts by aligning touch scan timing with LCD/AMOLED frame updates |
| Panel ID Reporting | Self-identifies connected touchscreen via on-sensor calibration data for factory programming and diagnostics |
Applications
| Smartphone Touch Interface | Tablet Human-Machine Interface |
|---|---|
Use Scenario: 5.0-inch smartphone with AMOLED display, USB-C fast charging, and daily outdoor use. IC Role / Device Role / Timing Role: Primary all-points capacitive touch controller managing 10-finger gestures, wet-finger tracking, and charger-noise-suppressed scanning. Use Value: Maintains touch accuracy under 35 VPP charger noise and enables responsive UI with ≤13-ms first-touch latency. | Use Scenario: 10-inch industrial tablet used in humid warehouse environments with frequent glove use. IC Role / Device Role / Timing Role: Multi-touch controller with automatic glove-mode switching and DualSense™ water rejection for continuous operation. Use Value: Supports ≤5-mm thick work gloves and rejects large-object false touches from tool handles or moisture films. |
| Medical Handheld Terminal | Automotive Infotainment Panel |
Use Scenario: Disinfectant-resistant medical tablet requiring frequent wipe-downs and gloved operation. IC Role / Device Role / Timing Role: Touch controller with self-test capability, panel ID reporting, and robust baseline tracking across thermal cycles. Use Value: Ensures consistent performance after repeated ethanol cleaning and ambient temperature shifts from 10°C to 40°C. | Use Scenario: In-vehicle center console with LCD display, 12-V automotive power, and high EMI from infotainment subsystems. IC Role / Device Role / Timing Role: Touch controller with configurable TX slew rate, ESD-hardened I/O, and display-synced scanning. Use Value: Eliminates touch jitter caused by display frame sync mismatch and meets AEC-Q200-relevant ESD robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-touch all-points controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CYTMA445-48LQI36AEA(T) | Includes TX slew-rate control and improved ESD performance not present in ZZ variant | Required for automotive-grade ESD compliance (IEC 61000-4-2 Level 4) and high-noise cabin environments | Select when design requires validated ESD hardening and precise TX edge control for SNR tuning |
| CYTMA445-48LQI36ACA(T) | Includes TX slew-rate control but lacks glove support enabled in ZZ variant | Targeted at consumer tablets where water rejection is critical but glove use is not required | Choose when DualSense™ water rejection is mandatory but glove tracking adds unnecessary firmware overhead |
Compared with CYTMA445-48LQI36ZZAT, the AEA variant adds production-ready ESD hardening and slew control for noise-sensitive automotive integration, while the ACA variant trades glove support for simplified qualification in cost-sensitive consumer displays.
Availability
CYTMA445-48LQI36ZZAT is available at Aetrix Electronics and suitable for smartphone touch interfaces, industrial tablet HMIs, medical handheld terminals, and automotive infotainment panels requiring stable component supply and long-term lifecycle support.
Supply support for CYTMA445-48LQI36ZZAT 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
Cypress Semiconductor (now part of Infineon Technologies) is a fabless semiconductor company specializing in programmable system-on-chip solutions, touch sensing, USB connectivity, and memory technologies.
The CYTMA445 belongs to the TrueTouch® multi-touch controller product line, engineered specifically for high-reliability capacitive touch applications in mobile, industrial, and automotive environments with demanding noise, environmental, and usability requirements.
FAQ
What touchscreen sensor patterns does CYTMA445-48LQI36ZZAT support?
The CYTMA445-48LQI36ZZAT supports Manhattan, diamond, and Single Layer Independent Multi-touch (SLIM®) sensor patterns, as well as Sensor-on-Lens (SOL) and on-cell touch-integrated display modules. It accommodates both PET and glass substrates and is validated for use with LCD and AMOLED displays.
Does CYTMA445-48LQI36ZZAT require external firmware loading at startup?
No. The CYTMA445-48LQI36ZZAT includes embedded non-volatile memory storing factory-calibrated firmware and configuration parameters. It boots autonomously and begins touch scanning within milliseconds of power-up without host intervention or external code loading.
Can CYTMA445-48LQI36ZZAT operate with only a 1.8-V digital supply?
Yes. Its digital I/O supply range is 1.71–5.5 V, fully covering 1.8-V operation. This allows direct interfacing with 1.8-V application processors and eliminates level-shifting requirements in low-voltage mobile SoC designs.
How does the "ZZ" suffix in CYTMA445-48LQI36ZZAT affect its feature set?
The "ZZ" suffix denotes a custom development variant with base functionality (10-finger tracking, ChargerArmor™, CapSense buttons) plus DualSense™ water rejection and glove support-but excludes TX slew-rate control and enhanced ESD features found in "AEA" or "ACA" variants. It is intended for evaluation and early-stage design-in.
CYTMA445-48LQI36ZZAT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-UFQFN Exposed Pad
- Touchscreen:
- 2 Wire Capacitive
- Resolution (Bits):
- 32 b
- Interface:
- I2C, SPI
- Voltage Reference:
- -
- Voltage - Supply:
- 1.71V ~ 5.5V
- Current - Supply:
- -
- Operating Temperature:
- -
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-QFN (6x6)
CYTMA445-48LQI36ZZAT FAQ
1.How can I place an order for CYTMA445-48LQI36ZZAT through Aetrix?
Please submit a Request for Quotation (RFQ) for CYTMA445-48LQI36ZZAT 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 CYTMA445-48LQI36ZZAT reliable?
The price and inventory of CYTMA445-48LQI36ZZAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYTMA445-48LQI36ZZAT is usually 5 days.
3.What payment methods are accepted for CYTMA445-48LQI36ZZAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYTMA445-48LQI36ZZAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYTMA445-48LQI36ZZAT?
CYTMA445-48LQI36ZZAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYTMA445-48LQI36ZZAT 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 CYTMA445-48LQI36ZZAT?
For technical support, including CYTMA445-48LQI36ZZAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYTMA445-48LQI36ZZAT requirements.
6.How does Aetrix verify that CYTMA445-48LQI36ZZAT is sourced from the original manufacturer or authorized distributors?
All CYTMA445-48LQI36ZZAT 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 CYTMA445-48LQI36ZZAT meets industry standards.
7.What is the process for return or replacement of CYTMA445-48LQI36ZZAT?
All CYTMA445-48LQI36ZZAT units undergo pre-shipment inspection (PSI). If there is an issue with CYTMA445-48LQI36ZZAT, 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 CYTMA445-48LQI36ZZAT part is unused and in its original packaging.
Return procedure for CYTMA445-48LQI36ZZAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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