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Infineon Technologies CY8CTMA140-48LQI-01T
- Part No.:
- CY8CTMA140-48LQI-01T
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- -
- Datasheet:
-
CY8CTMA140-48LQI-01T.pdf
- Description:
- IC TRUETOUCH CAPSENSE 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,250
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Product details
Overview
CY8CTMA140-48LQI-01T from Cypress Semiconductor is a TrueTouch® capacitive touchscreen controller designed for 4.5-inch diagonal displays, supporting up to 252 sense intersections and 2-finger all-points tracking with 0.5 mm positional accuracy and 3.5 mm finger separation. It operates on dual-rail supplies (1.71–3.6 V digital, 2.7–3.6 V analog), features Charger Armor™ noise immunity, and delivers >60 Hz refresh rate in active mode.
For engineers reviewing the CY8CTMA140-48LQI-01T datasheet, CY8CTMA140-48LQI-01T pinout, CY8CTMA140-48LQI-01T application, or CY8CTMA140-48LQI-01T equivalent, key selection criteria include 48-pin QFN package compatibility, I²C/SPI interface support, industrial temperature range (–40°C to +85°C), 2-finger ghost-free tracking capability, and integrated CapSense® button handling for compact HMI designs.
Technical Context
This controller implements a self-calibrating capacitive sensing architecture with adaptive frequency hopping to suppress noise from LCD drivers, battery chargers, and RF sources. Its signal processing pipeline includes real-time smart noise suppression and on-chip gesture decoding optimized for Android and Windows Phone Series 7 compliance.
The device supports configurable sensor stackups-including glass and plastic film-and accommodates chip-on-flex or chip-on-board integration. Bootloader-enabled field upgrades and manufacturing test firmware are embedded, eliminating external programming infrastructure during production.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max screen size | 4.5-inch diagonal (4:3 aspect ratio); enables compact handheld UIs without sensor pitch stretching |
| Sense nodes | 252 intersections (32 sense pins); supports high-resolution touch detection on medium-size panels |
| Finger tracking | 2-finger all-points tracking with ghost-free operation; sufficient for basic multi-touch navigation |
| Supply voltage | Digital: 1.71–3.6 V; analog: 2.7–3.6 V; allows shared 3.3 V rail or split-rail flexibility |
| Interface speed | I²C up to 400 kHz; SPI up to 2 Mbps sustained; meets real-time host communication latency targets |
| Power consumption | Deep Sleep current = 1 µA; Low Power state < 1.3 mA; extends battery life in portable devices |
| Accuracy | 0.5 mm positional accuracy; ensures precise tap and swipe recognition in consumer UIs |
Pinout & Package
Package: 48-pin QFN (6 × 6 × 0.6 mm), exposed thermal pad, RoHS-compliant, industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | Digital supply input | Accepts 1.71–3.6 V; powers I/O buffers and digital logic; decoupling required per layout guidelines |
| VDDA | Analog supply input | Accepts 2.7–3.6 V; powers sensing circuitry and ADC; must be filtered separately from VDDIO |
| GND | Ground reference | Common return for analog/digital domains; connected to exposed thermal pad for thermal and EMI control |
| SCL / SDA | I²C interface signals | Open-drain bidirectional bus lines; require external pull-ups; support standard/fast-mode timing |
| SCLK / MOSI / MISO / SS | SPI interface signals | Full-duplex synchronous interface; SS active-low enables slave selection in multi-device systems |
| INT | Interrupt output | Active-low open-drain signal indicating touch event or status change; drives host processor wake-up |
| RESET | Hardware reset input | Active-low asynchronous reset; initiates full internal initialization and calibration sequence |
| SENSE[0:31] | Capsense electrode inputs | 32 dedicated analog inputs for mutual-capacitance sensing; routed to internal transceiver matrix |
Key Features
| Feature | Design Value |
|---|---|
| Charger Armor™ technology | Adaptive frequency hopping dynamically shifts sensing frequency to avoid interference from switching charger noise |
| Self-calibration engine | Automatically compensates for temperature drift, humidity, and sensor aging without host intervention |
| Integrated CapSense® buttons | Supports dedicated mechanical or virtual button sensing alongside main touchscreen, reducing BOM count |
| Smart noise suppression | Simultaneously filters common-mode, LCD, RF, and charger-induced noise using real-time correlation algorithms |
| Field-upgradable firmware | Bootloader enables over-the-air or USB-based firmware updates without requiring external programmer hardware |
Applications
| Smartphone UI Controller | Industrial HMI Panel |
|---|---|
Use Scenario: Touchscreen interface in entry-level smartphones with 4.5-inch display and Android OS. IC Role / Device Role / Timing Role: Primary capacitive touch controller managing mutual-capacitance sensing, gesture decoding, and host interrupt signaling. Use Value: Delivers 0.5 mm accuracy and >60 Hz refresh with 2-finger tracking-meeting Android touch responsiveness requirements while minimizing power draw in standby. | Use Scenario: Operator interface on factory-floor HMIs with plastic-film overlay and glove operation. IC Role / Device Role / Timing Role: Robust touch acquisition unit supporting large-object detection and fat-finger tracking under EMI-heavy environments. Use Value: Charger Armor™ and smart noise suppression ensure reliable operation near variable-frequency drives and 24 V DC power supplies without shielding. |
| Medical Handheld Device | POS Terminal Interface |
Use Scenario: Disinfectant-resistant touchscreen on portable diagnostic tools with sealed front panel. IC Role / Device Role / Timing Role: Capacitive controller with self-calibrating baseline and environmental drift compensation. Use Value: Maintains consistent touch sensitivity across temperature swings (–10°C to +50°C ambient) and repeated alcohol wipe exposure. | Use Scenario: Customer-facing payment terminal with glass overlay and stylus/touch dual-mode input. IC Role / Device Role / Timing Role: Dual-role controller handling both finger touch and passive stylus proximity via same electrode array. Use Value: Supports unregulated dual-rail supply and integrates CapSense® button logic-reducing external components for physical function keys. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar touchscreen controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATMXT224E-MAU | 4-finger tracking, 2.8–3.6 V single-supply only, no analog/digital rail separation | Requires simpler power design but lacks analog domain optimization for SNR-critical layouts | Prefer when 4-finger support is mandatory and supply simplification outweighs SNR trade-off |
| FT5406EVB | Single-rail 2.8–3.3 V, no Charger Armor™, fixed 50 Hz max refresh at full load | Lacks adaptive noise immunity; unsuitable for charger-noise environments without external filtering | Select only for cost-sensitive, low-EMI indoor applications where 2-finger tracking suffices |
Compared with ATMXT224E-MAU and FT5406EVB, CY8CTMA140-48LQI-01T provides superior SNR and charger noise resilience due to its dual-rail architecture and adaptive frequency hopping-critical for battery-powered devices with aggressive charging profiles.
Availability
CY8CTMA140-48LQI-01T 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 design continuity.
Supply support for CY8CTMA140-48LQI-01T 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, with leadership in capacitive sensing, USB connectivity, and PSoC architectures.
CY8CTMA140 belongs to the TrueTouch® Multi-Touch All-Points Controller product line, engineered specifically for cost-effective, noise-resilient capacitive touch interfaces in consumer and industrial portable devices with screen sizes up to 4.5 inches.
FAQ
What is the maximum supported touchscreen size for CY8CTMA140-48LQI-01T?
The device is specified for up to 4.5-inch diagonal displays with 4:3 aspect ratio and 252-node sensor arrays. While stretched-pitch configurations may enable 7-inch operation, Cypress validates only 4.5-inch performance per datasheet Rev. *A. Larger sizes require custom tuning and are not guaranteed for SNR or accuracy.
Does CY8CTMA140-48LQI-01T support glove touch or stylus input?
It supports large-object detection and fat-finger tracking, enabling reliable operation with thin gloves (≤1 mm thickness). Passive stylus detection is possible via proximity sensing on the same electrode grid, but active stylus protocols (e.g., EMR, AES) are not supported-only mutual-capacitance touch events.
Can CY8CTMA140-48LQI-01T operate from a single 3.3 V supply?
Yes-it supports single shared supply from 2.7 V to 3.6 V, connecting both VDDIO and VDDA to the same rail. However, separating analog and digital supplies improves SNR by >10 dB in noisy environments, and Cypress recommends independent filtering per the layout guide.
Is bootloader-based firmware update supported in CY8CTMA140-48LQI-01T?
Yes-the device includes an integrated bootloader accessible via I²C or SPI. Field updates require host-initiated commands and signed firmware images; no external programmer is needed. Bootloader version and update protocol are documented in the TrueTouch Host Communications Protocol specification.
CY8CTMA140-48LQI-01T 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:
- -
CY8CTMA140-48LQI-01T FAQ
1.How can I place an order for CY8CTMA140-48LQI-01T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8CTMA140-48LQI-01T 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 CY8CTMA140-48LQI-01T reliable?
The price and inventory of CY8CTMA140-48LQI-01T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8CTMA140-48LQI-01T is usually 5 days.
3.What payment methods are accepted for CY8CTMA140-48LQI-01T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8CTMA140-48LQI-01T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8CTMA140-48LQI-01T?
CY8CTMA140-48LQI-01T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8CTMA140-48LQI-01T 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 CY8CTMA140-48LQI-01T?
For technical support, including CY8CTMA140-48LQI-01T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8CTMA140-48LQI-01T requirements.
6.How does Aetrix verify that CY8CTMA140-48LQI-01T is sourced from the original manufacturer or authorized distributors?
All CY8CTMA140-48LQI-01T 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 CY8CTMA140-48LQI-01T meets industry standards.
7.What is the process for return or replacement of CY8CTMA140-48LQI-01T?
All CY8CTMA140-48LQI-01T units undergo pre-shipment inspection (PSI). If there is an issue with CY8CTMA140-48LQI-01T, 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 CY8CTMA140-48LQI-01T part is unused and in its original packaging.
Return procedure for CY8CTMA140-48LQI-01T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8CTMA140-48LQI-01T Tags
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