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Infineon Technologies TMA525-49FNI25ZZT
- Part No.:
- TMA525-49FNI25ZZT
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
TMA525-49FNI25ZZT.pdf
- Description:
- IC MCU TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:1,367
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Product details
Overview
TMA525-49FNI25ZZT from Cypress Semiconductor is a TrueTouch® touchscreen controller IC designed for high-noise environments in premium smartphones and tablets. It delivers 40 Vpp charger noise immunity (1–500 kHz), supports dual-mode self- and mutual-capacitance sensing, and enables 2-mm passive stylus tracking with 1-mm positional accuracy at 120 Hz refresh rate.
For engineers reviewing the TMA525-49FNI25ZZT datasheet, TMA525-49FNI25ZZT pinout, TMA525-49FNI25ZZT application, or TMA525-49FNI25ZZT equivalent, key selection criteria include SNR performance under display/LCD noise, glove/hover/waterproofing capability, and support for in-cell/on-cell stackups without shield layers or air gaps.
Technical Context
The TMA525-49FNI25ZZT implements Cypress's patented DualSense™ architecture, dynamically switching between self-capacitance (for hover, glove, and waterproofing) and mutual-capacitance (for multi-touch position resolution). Its analog front end integrates narrow-band response, high-frequency sampling, and hardware DSP filtering to suppress broadband and periodic interference.
It features adaptive Charger Armor™ that detects and cancels charger noise up to 40 Vpp, and external display synchronization for real-time noise cancellation-eliminating need for mechanical shielding or air gaps in integrated LCD stackups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charger Noise Immunity | Up to 40 Vpp (1–500 kHz); eliminates false touches during fast charging without external filtering. |
| SNR Performance | Industry-highest signal-to-noise ratio via on-chip 10-V Tx drive and Tx-Boost™ multi-phase transmission. |
| Sensing Architecture | DualSense™: simultaneous self- + mutual-capacitance mode switching for waterproofing, hover, and 10-finger touch. |
| Stylus Support | 2-mm passive stylus with 1-mm linearity/accuracy and 120-Hz reporting; includes built-in palm rejection. |
| Display Integration | External sync interface for LCD timing; supports in-cell, on-cell, and direct-lamination stackups without shield layers. |
| Water Resistance | Enables IP-67 compliant designs via robust moisture discrimination using combined capacitance sensing. |
Pinout & Package
Package: 49-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O Power Supply | 1.7–1.95 V supply for digital interface; decoupling required for noise-sensitive I²C/SPI operation. |
| VDDA | Analog Power Supply | 2.7–3.6 V supply for analog front end; isolated routing critical for SNR integrity. |
| RESET_N | Active-Low Reset | Asynchronous reset input; must be held low ≥10 µs for full internal state initialization. |
| INT | Interrupt Output | Open-drain active-low interrupt signaling touch event or error condition to host processor. |
| SCL / SDA | I²C Interface | Standard-mode (100 kHz) or fast-mode (400 kHz) I²C bus for configuration and data readout. |
| TX[0:15] | Transmit Electrode Drivers | 16 programmable high-voltage TX outputs supporting multi-phase drive for SNR optimization. |
| RX[0:23] | Receive Electrode Inputs | 24-channel differential ADC inputs for simultaneous correlated scanning of all Rx lines. |
Key Features
| Feature | Design Value |
|---|---|
| DualSense™ Sensing | Real-time switching between self-capacitance (for hover/glove/water) and mutual-capacitance (for precision multi-touch) within single frame. |
| Charger Armor™ | Adaptive noise detection and cancellation engine that activates only when charger noise is present-no performance penalty during quiet operation. |
| Display Sync Interface | Dedicated LVDS-compatible sync input for precise alignment with LCD vertical blanking interval-enabling zero-air-gap integration. |
| 2-mm Stylus Engine | Hardware-accelerated stylus tracking path with sub-pixel interpolation and dynamic palm rejection-no host CPU overhead. |
Applications
| Smartphone Touch Interface | Tablet Display Integration |
|---|---|
Use Scenario: High-end Android smartphone with curved glass, fast-charging, and IP-67 rating. IC Role / Device Role / Timing Role: Primary touchscreen controller managing 10-finger gesture, glove mode, and hover detection at 120 Hz. Use Value: Eliminates need for shield layer or air gap while maintaining SNR > 65 dB under 40 Vpp charger noise. | Use Scenario: 8.3" tablet with on-cell touch stackup and stylus-enabled note-taking UI. IC Role / Device Role / Timing Role: Dual-mode controller enabling seamless transition between finger, glove, and 2-mm stylus input. Use Value: Delivers 1-mm stylus linearity and 7 mm² character capture without host-side interpolation. |
| Wearable Touch Controller | Industrial HMI Panel |
Use Scenario: Samsung Gear S–class wearable with curved 1.6" AMOLED and ambient moisture exposure. IC Role / Device Role / Timing Role: Compact touchscreen controller supporting self-capacitance hover (10 mm) and waterproof operation. Use Value: Maintains reliable touch registration through condensation and light rain via DualSense™ moisture discrimination. | Use Scenario: Factory-floor HMI panel exposed to ESD, RF noise, and conductive gloves. IC Role / Device Role / Timing Role: Ruggedized controller enabling two-finger gesture recognition with thick industrial gloves. Use Value: Achieves 1-mm accuracy under 15 kV ESD events and 30 V/m radiated immunity per IEC 61000-4-3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar touchscreen controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Atmel maXTouch MXT224E | Lacks adaptive charger noise cancellation; max immunity ~15 Vpp; no hardware hover or 2-mm stylus engine. | Requires external shield layer for LCD noise; limited to finger-only input in wet conditions. | Lower BOM cost but higher system-level integration effort for noise-prone designs. |
| Microchip QT60480 | No dual-mode sensing; self-capacitance only; no mutual-capacitance multi-touch support. | Suitable for simple overlay panels only; cannot support in-cell or on-cell integration. | Appropriate for cost-sensitive single-touch or basic glove applications-not for premium smartphones or tablets. |
Compared with MXT224E and QT60480, the TMA525-49FNI25ZZT uniquely combines adaptive noise immunity, dual-sensing architecture, and hardware-accelerated stylus/hover-enabling thinner, more robust, and feature-rich touch interfaces without compromising SNR or system-level shielding requirements.
Availability
TMA525-49FNI25ZZT is available at Aetrix Electronics and suitable for premium smartphone development, industrial HMI design, wearable electronics manufacturing, and tablet platform integration requiring stable component supply and long-term lifecycle support.
Supply support for TMA525-49FNI25ZZT 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 global leader in embedded systems solutions, specializing in high-performance mixed-signal ICs for human interface, connectivity, and memory applications.
The TrueTouch® product line was engineered specifically for noise-immune, high-reliability capacitive touch control in consumer and industrial displays-prioritizing SNR, waterproofing, and integration flexibility over legacy architecture constraints.
FAQ
What is the maximum supported touchscreen size for TMA525-49FNI25ZZT?
The TMA525-49FNI25ZZT supports up to 8.3" displays at 5-mm electrode pitch (tablet) and 5.3" at 3.2-mm pitch (superphone), verified with production-grade sensor layouts and mutual-capacitance scan algorithms. Larger sizes require custom firmware tuning and are not guaranteed without validation.
Does TMA525-49FNI25ZZT require external components for charger noise suppression?
No external components are required for charger noise suppression-the TMA525-49FNI25ZZT integrates Charger Armor™, an on-die adaptive noise cancellation engine. Only standard VDDA/VDDIO decoupling capacitors (100 nF + 1 µF per rail) are needed per Cypress layout guidelines.
Can TMA525-49FNI25ZZT operate with a 1.8-V I/O interface?
Yes-VDDIO is specified from 1.7 V to 1.95 V, making it compatible with 1.8-V host processors. The I²C interface operates at 1.8-V logic levels with 3.3-V tolerant SDA/SCL pins, eliminating level-shifter requirements in most mobile SoC integrations.
Is firmware update capability supported in-field via I²C?
Yes-TMA525-49FNI25ZZT supports full in-system firmware updates over I²C using Cypress's proprietary bootloader protocol. Updates preserve calibration data and require no external programming hardware or chip reflow.
TMA525-49FNI25ZZT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
TMA525-49FNI25ZZT FAQ
1.How can I place an order for TMA525-49FNI25ZZT through Aetrix?
Please submit a Request for Quotation (RFQ) for TMA525-49FNI25ZZT 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 TMA525-49FNI25ZZT reliable?
The price and inventory of TMA525-49FNI25ZZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMA525-49FNI25ZZT is usually 5 days.
3.What payment methods are accepted for TMA525-49FNI25ZZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMA525-49FNI25ZZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMA525-49FNI25ZZT?
TMA525-49FNI25ZZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMA525-49FNI25ZZT 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 TMA525-49FNI25ZZT?
For technical support, including TMA525-49FNI25ZZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMA525-49FNI25ZZT requirements.
6.How does Aetrix verify that TMA525-49FNI25ZZT is sourced from the original manufacturer or authorized distributors?
All TMA525-49FNI25ZZT 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 TMA525-49FNI25ZZT meets industry standards.
7.What is the process for return or replacement of TMA525-49FNI25ZZT?
All TMA525-49FNI25ZZT units undergo pre-shipment inspection (PSI). If there is an issue with TMA525-49FNI25ZZT, 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 TMA525-49FNI25ZZT part is unused and in its original packaging.
Return procedure for TMA525-49FNI25ZZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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