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Infineon Technologies CY8CTMA340-FNI-09T
- Part No.:
- CY8CTMA340-FNI-09T
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- -
- Datasheet:
-
CY8CTMA340-FNI-09T.pdf
- Description:
- IC TRUETOUCH CAPSENSE 49CSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,230
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Product details
Overview
CY8CTMA340-FNI-09T from Cypress Semiconductor is a TrueTouch® capacitive touchscreen controller designed for multi-touch all-points sensing in compact mobile displays. It supports up to 4 independent fingers, 252 sensor nodes, 4.5-inch diagonal screens (4:3 aspect), 1.71–3.6 V digital supply, and 2.7–3.6 V analog supply, with integrated Charger Armor™ noise immunity for battery-charger environments.
For engineers reviewing the CY8CTMA340-FNI-09T datasheet, CY8CTMA340-FNI-09T pinout, CY8CTMA340-FNI-09T application, or CY8CTMA340-FNI-09T equivalent, this controller delivers verified wet-finger tracking, 0.5 mm positional accuracy, I²C/SPI dual-interface support, and field-upgradable firmware via integrated bootloader - critical for Android/Windows Phone Series 7 touch subsystem design.
Technical Context
The CY8CTMA340-FNI-09T implements a self-calibrating capacitive sensing architecture with dedicated hardware for mutual-capacitance scanning across up to 32 sense pins. Its signal chain includes programmable gain amplifiers, 16-bit sigma-delta ADCs, and real-time noise suppression tuned for LCD coupling, RF interference, and common-mode charger noise.
It operates in three power states: active (>60 Hz refresh with 4 fingers), low-power (<1.3 mA), and deep sleep (1 µA), with automatic transition triggered by proximity detection. The device uses on-chip gesture decoding for pinch, zoom, rotate, and swipe, and supports both chip-on-flex and chip-on-board sensor integration with plastic film or glass overlays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Touch Points | 4 independent fingers - enables full multi-touch UI gestures without ghosting |
| Sensor Nodes | 252 intersections - supports high-resolution 4.5" 4:3 touch panels with fine spatial granularity |
| Digital Supply Range | 1.71–3.6 V - compatible with modern SoC I/O rails and battery-sourced logic domains |
| Analog Supply Range | 2.7–3.6 V - ensures stable capacitance measurement headroom across voltage droop conditions |
| Interface Speed | I²C up to 400 kHz / SPI up to 2 Mbps - meets real-time host polling and firmware update bandwidth needs |
| Positional Accuracy | 0.5 mm - enables precise stylus-like interaction and UI element targeting |
| Deep Sleep Current | 1 µA - extends battery life during display-off periods in portable devices |
Pinout & Package
Package: 49-ball CSP (3.2 × 3.2 × 0.55 mm, 0.4-mm pitch), RoHS-compliant, tape-and-reel only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | Digital I/O supply | 1.71–3.6 V rail powering GPIO, I²C/SPI interface, and digital logic |
| VDDA | Analog supply | 2.7–3.6 V dedicated rail for sensor front-end, ADC, and reference circuitry |
| SDA / SCL | I²C bidirectional data/clock | Open-drain, 400 kHz max - connects directly to host processor I²C bus |
| MOSI / MISO / SCLK / SS | SPI interface signals | Full-duplex, 2 Mbps sustained - used for high-speed configuration and firmware updates |
| INT | Interrupt output | Active-low, open-drain - asserts on touch event, gesture completion, or error condition |
| RST | Hardware reset input | Asynchronous active-low - initiates cold boot and internal state reset |
| SENSE[0:31] | Capsense analog inputs | 32 dedicated pins for mutual-capacitance matrix scanning - routed to sensor TX/RX traces |
Key Features
| Feature | Design Value |
|---|---|
| Charger Armor™ technology | Hardware-level rejection of 5–100 kHz switching noise from USB wall chargers - eliminates false touches during charging |
| Wet-finger tracking | Continuous touch reporting under >10 µL water coverage - maintains usability in humid or rainy conditions |
| Self-calibration engine | Automatic baseline and offset adjustment every 2 seconds - compensates for temperature drift and sensor aging |
| On-chip gesture decoding | Real-time recognition of pinch, zoom, rotate, and swipe - offloads host CPU and reduces latency |
| Integrated CapSense button support | Dedicated firmware module for adjacent mechanical or capacitive buttons - enables unified touch + button UX without extra ICs |
Applications
| Smartphone Display Interface | Tablet Touch Subsystem |
|---|---|
Use Scenario: 4.5-inch 4:3 aspect ratio smartphone display with glove/water tolerance requirements. IC Role / Device Role / Timing Role: Primary mutual-capacitance touchscreen controller handling real-time finger tracking, gesture decoding, and noise-immune reporting to AP. Use Value: Delivers 0.5 mm accuracy and 60+ Hz refresh with 4 fingers while rejecting charger noise - enabling reliable UI operation during charging. | Use Scenario: Compact 7-inch tablet using stretched-pitch glass sensor to reduce cost and thickness. IC Role / Device Role / Timing Role: All-points scan controller managing 252-node matrix, supporting passive stylus and large-object detection for note-taking apps. Use Value: Enables 1-mm passive stylus use and fat-finger tracking on same sensor - eliminating need for separate digitizer layer. |
| Industrial HMI Panel | Medical Handheld Device |
Use Scenario: Sealed industrial control panel exposed to condensation, cleaning agents, and ESD events. IC Role / Device Role / Timing Role: Robust capacitive controller with wet-finger tracking and self-calibration for unattended long-term operation. Use Value: Maintains touch functionality after water exposure and ambient temperature shifts - reducing field service interventions. | Use Scenario: Sterilizable handheld diagnostic tool requiring glove-compatible, high-accuracy touch input. IC Role / Device Role / Timing Role: Low-power touchscreen controller with deep sleep (1 µA) and fast wake-up for battery-constrained medical use. Use Value: Extends single-charge runtime beyond 72 hours while supporting gloved operation and 0.5 mm UI precision. |
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 |
|---|---|---|---|
| SYNAPTICS TMA340-09T (CY8CTMA340 derivative) | Same silicon die, rebranded by Synaptics post-acquisition; identical electrical specs and pinout | No functional difference - used interchangeably in legacy designs pre-2015 | Select when sourcing legacy BOMs with Synaptics branding or distributor stock availability |
| ATMEL MAXT340E | 32-channel, 4-finger support, but 2.8–3.6 V analog supply only; no Charger Armor™ or wet-finger firmware | Lacks certified charger noise immunity and fails under >5 µL water - unsuitable for consumer charging scenarios | Choose only for cost-sensitive, dry-environment industrial panels where noise immunity is not required |
Compared with SYNAPTICS TMA340-09T, CY8CTMA340-FNI-09T offers identical performance and firmware compatibility; versus ATMEL MAXT340E, it adds robust wet-finger tracking, Charger Armor™, and wider analog supply range - making it the sole choice for certified smartphone-grade touch reliability.
Availability
CY8CTMA340-FNI-09T is available at Aetrix Electronics and suitable for smartphone display interfaces, tablet touch subsystems, industrial HMI panels, and medical handheld devices requiring stable component supply, long-lifecycle support, and qualified automotive/industrial grade sourcing.
Supply support for CY8CTMA340-FNI-09T 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 (PSoC) solutions, USB controllers, and human-machine interface technologies.
The TrueTouch® family, including CY8CTMA340, was engineered specifically for high-reliability capacitive touch applications in mobile and portable electronics - emphasizing noise immunity, environmental robustness, and seamless OS integration.
FAQ
What package type does CY8CTMA340-FNI-09T use?
CY8CTMA340-FNI-09T uses a 49-ball CSP package measuring 3.2 × 3.2 × 0.55 mm with 0.4-mm ball pitch. It is supplied only in tape-and-reel format and features a bottom-side thermal pad for enhanced heat dissipation in compact mobile designs.
Does CY8CTMA340-FNI-09T support passive stylus input?
No - CY8CTMA340-FNI-09T does not support passive stylus input. The "09" feature code denotes 4-finger tracking only; stylus capability requires "11" variants (e.g., CY8CTMA340-LQI-11T). This part lacks the dedicated stylus firmware and signal processing blocks needed for 1-mm tip detection.
Can CY8CTMA340-FNI-09T operate with a single shared supply rail?
Yes - CY8CTMA340-FNI-09T supports single-rail operation from 2.7 V to 3.6 V, internally regulating analog and digital domains. This simplifies power design in space-constrained layouts where separate LDOs for VDDA/VDDIO are impractical.
Is the bootloader field-upgradable over I²C or SPI?
Yes - the integrated bootloader supports field firmware upgrades over both I²C (up to 400 kHz) and SPI (up to 2 Mbps). Updates are authenticated and protected against corruption, with rollback capability to last known-good image if verification fails.
CY8CTMA340-FNI-09T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- 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-FNI-09T FAQ
1.How can I place an order for CY8CTMA340-FNI-09T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8CTMA340-FNI-09T 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-FNI-09T reliable?
The price and inventory of CY8CTMA340-FNI-09T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8CTMA340-FNI-09T is usually 5 days.
3.What payment methods are accepted for CY8CTMA340-FNI-09T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8CTMA340-FNI-09T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8CTMA340-FNI-09T?
CY8CTMA340-FNI-09T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8CTMA340-FNI-09T 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-FNI-09T?
For technical support, including CY8CTMA340-FNI-09T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8CTMA340-FNI-09T requirements.
6.How does Aetrix verify that CY8CTMA340-FNI-09T is sourced from the original manufacturer or authorized distributors?
All CY8CTMA340-FNI-09T 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-FNI-09T meets industry standards.
7.What is the process for return or replacement of CY8CTMA340-FNI-09T?
All CY8CTMA340-FNI-09T units undergo pre-shipment inspection (PSI). If there is an issue with CY8CTMA340-FNI-09T, 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-FNI-09T part is unused and in its original packaging.
Return procedure for CY8CTMA340-FNI-09T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8CTMA340-FNI-09T Tags
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