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Infineon Technologies CY8CTMA340-48LQI-03
- Part No.:
- CY8CTMA340-48LQI-03
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- -
- Datasheet:
-
CY8CTMA340-48LQI-03.pdf
- Description:
- IC TRUETOUCH CAPSENSE 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,941
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Product details
Overview
CY8CTMA340-48LQI-03 from Cypress Semiconductor is a TrueTouch® capacitive touchscreen controller designed for mid-size touchscreens up to 4.5-inch diagonal, supporting up to 252 sensing nodes and 2-finger tracking with passive stylus (1-mm tip) capability. It operates with dual-rail supplies (1.71–3.6 V digital, 2.7–3.6 V analog), delivers >60-Hz refresh rate, and integrates Charger Armor™ noise immunity for battery-charger environments.
For engineers reviewing the CY8CTMA340-48LQI-03 datasheet, CY8CTMA340-48LQI-03 pinout, CY8CTMA340-48LQI-03 application, or CY8CTMA340-48LQI-03 equivalent, key selection criteria include 2-finger + stylus support, 48-pin QFN package compatibility, wet-finger tracking performance, I²C/SPI interface flexibility, and factory-programmed firmware version 0597H.
Technical Context
The CY8CTMA340-48LQI-03 implements a self-calibrating capacitive sensing engine with Smart Noise Suppression for LCD, charger, RF, and common-mode interference. Its architecture supports chip-on-flex and chip-on-board sensor integration, configurable for glass or plastic film stackups.
It embeds an integrated bootloader enabling field firmware upgrades, and provides Android/Windows Phone Series 7-compliant drivers. The device uses a dedicated analog front-end with 0.1 mm noise-free resolution and 0.5 mm positional accuracy under real-world environmental variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Screen Size | 4.5-inch diagonal (4:3 aspect ratio); enables compact mobile/portable HMI designs |
| Sensing Nodes | 252 intersections; supports high-resolution 48-pin QFN layout with dense electrode routing |
| Finger Tracking | 2-finger independent tracking + passive stylus; optimized for basic gesture UI without ghosting |
| Digital Supply | 1.71–3.6 V; allows direct connection to wide-range PMIC rails or single Li-ion system supply |
| Analog Supply | 2.7–3.6 V; separates noise-sensitive analog path from digital domain for SNR stability |
| Interface Speed | I²C up to 400 kHz / SPI up to 2 Mbps; ensures low-latency host communication in resource-constrained SoCs |
| Low-Power Current | <1.3 mA active, 1 µA deep sleep; extends battery life in always-on portable devices |
Pinout & Package
48-pin 6 × 6 × 0.6 mm QFN package (JEDEC MO-220, variant VVQFN048). Exposed thermal pad (EP) on underside for PCB-level heat dissipation and ground reference integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | Digital I/O supply | 1.71–3.6 V rail; powers GPIO, I²C/SPI logic, and bootloader interface |
| VDDA | Analog supply | 2.7–3.6 V rail; powers sensing front-end, ADC, and reference circuitry |
| GND | Analog/digital ground | Common return; requires low-impedance star-point connection to EP for noise control |
| SCL / SDA | I²C bus interface | Open-drain, 3.3-V tolerant; supports standard/fast-mode timing without level shifters |
| SCLK / MOSI / MISO / SS | SPI interface | Full-duplex slave operation; 2 Mbps sustained throughput enables fast configuration updates |
| INT | Interrupt output | Active-low, open-drain; signals host on touch event, gesture completion, or error condition |
| RESET | Hardware reset input | Active-low asynchronous reset; initiates full internal state reinitialization and calibration |
| SDA2 / SCL2 | Secondary I²C port | Optional second I²C channel for daisy-chained sensors or companion ICs |
Key Features
| Feature | Design Value |
|---|---|
| Charger Armor™ technology | Real-time suppression of switching noise from USB wall chargers, eliminating false touches during charging |
| Wet-finger tracking | Continuous multi-touch detection under water droplets or condensation, no loss of tracking continuity |
| Self-calibration engine | Automatic baseline adjustment across temperature/humidity shifts; eliminates manual recalibration in production |
| CapSense button integration | On-die support for discrete capacitive buttons alongside touchscreen, reducing BOM count and PCB area |
| Field-upgradable firmware | Bootloader-enabled over I²C/SPI; allows post-deployment feature enhancements and bug fixes |
Applications
| Smartphone UI Controller | Industrial HMI Panel |
|---|---|
Use Scenario: Entry-level smartphone with 4.5-inch display requiring reliable 2-finger gestures and stylus annotation. IC Role / Device Role / Timing Role: Primary capacitive touchscreen controller managing electrode scanning, noise rejection, and host interrupt signaling. Use Value: Eliminates need for external noise filters or shielding; reduces system-level debug time for charger-induced false touches. | Use Scenario: Factory-floor operator panel exposed to humidity, gloves, and ESD events in manufacturing environments. IC Role / Device Role / Timing Role: Robust touch interface controller with wet-finger tracking and large-object detection for gloved operation. Use Value: Maintains functional uptime in high-moisture conditions where competing controllers report intermittent failure or drift. |
| Medical Handheld Device | POS Terminal Interface |
Use Scenario: Portable diagnostic tool with sealed glass front and stylus-based data entry for clinicians. IC Role / Device Role / Timing Role: Dual-mode controller handling both finger swipes and precise 1-mm stylus input with sub-0.5 mm accuracy. Use Value: Enables HIPAA-compliant handwritten notes without requiring separate digitizer layer or mechanical buttons. | Use Scenario: Retail point-of-sale terminal with plastic-film overlay and frequent stylus use for signature capture. IC Role / Device Role / Timing Role: Touchscreen controller configured for film-based sensors and passive stylus with fat-finger tolerance. Use Value: Supports durable, low-cost sensor stackups while maintaining signature legibility and anti-glare usability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar touchscreen controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8CTMA340-48LQI-11 | Supports 4-finger tracking + stylus; same package and voltage specs | Required for pinch-to-zoom, rotation, and multi-gesture UIs | Select when full multi-touch gesture set is mandatory and cost premium is acceptable |
| ATMXT224E-MAU | Microchip (Atmel) maXTouch® controller; 16-bit resolution, 2.8–3.6 V supply only | Lacks built-in Charger Armor™; requires external noise mitigation design effort | Choose if existing design uses Atmel ecosystem or requires higher raw resolution at expense of noise robustness |
Compared with CY8CTMA340-48LQI-11, the -03 variant trades 4-finger capability for lower firmware complexity and reduced host CPU load; versus ATMXT224E-MAU, it delivers superior out-of-box charger noise immunity without layout-level countermeasures.
Availability
CY8CTMA340-48LQI-03 is available at Aetrix Electronics and suitable for smartphone UI controllers, industrial HMI panels, medical handheld devices, and POS terminal interfaces requiring stable component supply and long-term manufacturability.
Supply support for CY8CTMA340-48LQI-03 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) designs programmable silicon solutions for embedded systems, with expertise in PSoC, memory, USB, and capacitive sensing technologies.
The TrueTouch® TMA product line targets cost-sensitive, noise-resilient touchscreen applications in consumer and industrial markets, emphasizing robustness in real-world electromagnetic environments over raw node count.
FAQ
What distinguishes CY8CTMA340-48LQI-03 from the -11 variant?
The -03 variant is factory-configured for 2-finger + stylus operation, while the -11 supports 4-finger + stylus. Both share identical 48-pin QFN packaging, supply ranges, and firmware base. The -03 reduces host-side processing overhead and simplifies driver certification for basic gesture sets.
Does CY8CTMA340-48LQI-03 require external components for charger noise immunity?
No. Charger Armor™ is implemented entirely within the IC's analog front-end and digital filtering pipeline. No external ferrites, RC filters, or shielded cables are required to meet IEC 61000-4-6 Level 3 conducted immunity during USB charging.
Can CY8CTMA340-48LQI-03 drive a 7-inch touchscreen?
Yes - with stretched sensor pitch (reduced electrode density), per Cypress documentation. However, maximum node count remains 252, and 2-finger tracking fidelity may degrade beyond 4.5-inch diagonal without layout optimization and firmware tuning.
Is the integrated CapSense button support compatible with metal-over-capacitive overlays?
Yes. The device's adaptive baseline algorithm and high-SNR front-end enable reliable button detection through thin metal layers (≤0.2 mm) or conductive ink traces, provided overlay dielectric thickness and grounding follow Cypress AN92239 guidelines.
CY8CTMA340-48LQI-03 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Applications:
- -
- Core Processor:
- -
- Program Memory Type:
- -
- Controller Series:
- -
- RAM Size:
- -
- Interface:
- -
- Number of I/O:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
CY8CTMA340-48LQI-03 FAQ
1.How can I place an order for CY8CTMA340-48LQI-03 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8CTMA340-48LQI-03 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 CY8CTMA340-48LQI-03 reliable?
The price and inventory of CY8CTMA340-48LQI-03 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8CTMA340-48LQI-03 is usually 5 days.
3.What payment methods are accepted for CY8CTMA340-48LQI-03?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8CTMA340-48LQI-03 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8CTMA340-48LQI-03?
CY8CTMA340-48LQI-03 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8CTMA340-48LQI-03 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 CY8CTMA340-48LQI-03?
For technical support, including CY8CTMA340-48LQI-03 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8CTMA340-48LQI-03 requirements.
6.How does Aetrix verify that CY8CTMA340-48LQI-03 is sourced from the original manufacturer or authorized distributors?
All CY8CTMA340-48LQI-03 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 CY8CTMA340-48LQI-03 meets industry standards.
7.What is the process for return or replacement of CY8CTMA340-48LQI-03?
All CY8CTMA340-48LQI-03 units undergo pre-shipment inspection (PSI). If there is an issue with CY8CTMA340-48LQI-03, 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 CY8CTMA340-48LQI-03 part is unused and in its original packaging.
Return procedure for CY8CTMA340-48LQI-03:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8CTMA340-48LQI-03 Tags
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CYPD3175-24LQXQ
Infineon Technologies
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SLB9672VU20FW1523XTMA1
Infineon Technologies
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AT97SC3204-U2A1A-20
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AT97SC3204-U2A1A-10
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SLM9670AQ20FW1311XTMA1
Infineon Technologies
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SLB9673AU20FW2613XTMA1
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