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Infineon Technologies CYTMA448-70BUI58AET
- Part No.:
- CYTMA448-70BUI58AET
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- 70-UFBGA
- Datasheet:
-
CYTMA448-70BUI58AET.pdf
- Description:
- IC MCU 32BIT 70BGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,156
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Product details
Overview
CYTMA448-70BUI58AET from Cypress Semiconductor is a multi-touch capacitive touchscreen controller featuring a 32-bit ARM Cortex™ CPU, configurable register set, and DualSense™ water/wet-finger tracking. It supports up to 58 sense pins (777 intersections), 10-finger reporting, 230 Hz refresh rate, and 500 kHz TX frequency for 7.9-inch diagonal displays with 5-mm sensor pitch.
For engineers reviewing the CYTMA448-70BUI58AET datasheet, CYTMA448-70BUI58AET pinout, CYTMA448-70BUI58AET application, or CYTMA448-70BUI58AET equivalent, key selection criteria include its 70-ball BGA package, 20-V ChargerArmor™ noise immunity, glove support (≤5 mm), and I²C/SPI interface compatibility with Android™ touch stacks.
Technical Context
The CYTMA448-70BUI58AET implements mutual capacitance sensing with flexible TX/RX configuration enabling single-layer FPC routing. Its ARM Cortex™ CPU executes real-time touch processing firmware, including automatic baseline tracking and large-object rejection logic.
DualSense™ technology enables simultaneous wet-finger and water-rejection operation, while ChargerArmor™ provides validated immunity to 20 VPP charger noise and AT&T Zero charger interference-critical for mobile and automotive infotainment systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sense Pins | 58 - Enables 777-node (21 × 37) touch sensor arrays for 7.9-inch 16:9 displays |
| Refresh Rate | Up to 230 Hz - Supports low-latency gesture response in high-speed UI navigation |
| TX Drive Voltage | Effective 28 V - Increases SNR for reliable detection through thick cover glass or gloves |
| Charger Noise Immunity | 20 VPP - Maintains stable operation during fast-charging with legacy and USB-PD adapters |
| Power Consumption | 8.5 mW average / 15 μW deep-sleep - Enables battery-powered devices with multi-day standby |
| Interface Speed | I²C up to 3.4 Mbps, SPI up to 8 Mbps - Meets Android™ HAL latency requirements for touch reporting |
| Finger Size Range | 4 mm to 30 mm - Accurately resolves both stylus-tip precision and palm rejection |
Pinout & Package
70-ball 5.5 × 5.5 × 0.6-mm BGA package with 0.5-mm ball pitch, optimized for compact mobile and automotive display modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | Digital/I/O supply | 1.71–5.5 V rail powering GPIOs and I²C/SPI interface logic |
| VDDA | Analog supply | 2.65–5.5 V rail for sensor front-end and ADC reference stability |
| SCL/SDA | I²C interface | Configurable as master or slave; supports standard/fast/fast-plus/high-speed modes |
| SCLK/MOSI/MISO/SS | SPI interface | Full-duplex communication up to 8 Mbps; SS polarity configurable |
| INT | Interrupt output | Active-low signal indicating valid touch data ready for host read |
| RST | Hardware reset | Asynchronous active-low reset that clears internal state and reinitializes firmware |
| TPx / RXx | Touch sense inputs | 58 dedicated analog input channels supporting mutual capacitance measurement |
Key Features
| Feature | Design Value |
|---|---|
| DualSense™ wet-finger tracking | Simultaneous water rejection and finger tracking without mode switching or performance loss |
| ChargerArmor™ noise immunity | Validated operation under 20 VPP conducted noise-no external filtering required |
| Glove support (≤5 mm) | Automatic mode switching between bare-finger and thick-glove operation without host intervention |
| Field-upgradable firmware | Bootloader-enabled over I²C/SPI allows post-deployment calibration and feature updates |
| Panel ID reporting | Self-identifies connected sensor stack via on-chip sensor diagnostics and checksum validation |
Applications
| Smartphone Display Interface | Automotive Infotainment Panel |
|---|---|
Use Scenario: High-resolution 7.9-inch AMOLED display in flagship smartphone with fast-charging capability and outdoor usability. IC Role / Device Role / Timing Role: Primary mutual-capacitance touchscreen controller handling all touch acquisition, preprocessing, and host-reporting timing. Use Value: 230 Hz refresh and <13 ms first-touch response enable fluid scrolling and gesture recognition; ChargerArmor™ eliminates touch jitter during 30 W USB-C charging. | Use Scenario: Driver-facing center console with glove operation, condensation resistance, and EMI-heavy engine bay environment. IC Role / Device Role / Timing Role: Robust touch coordinator managing wet-finger, thick-glove, and metal-interference conditions in real time. Use Value: DualSense™ ensures reliable input during rain exposure; 20 VPP noise immunity prevents false touches near alternator and ignition systems. |
| Industrial HMI Tablet | Medical Diagnostic Display |
Use Scenario: Ruggedized 7.9-inch tablet used in factory floor environments with oily gloves and variable ambient temperature. IC Role / Device Role / Timing Role: Adaptive touch processor performing automatic baseline tracking and large-object rejection to suppress palm contact. Use Value: 58-sense-pin scalability supports custom sensor layouts; 15 μW deep-sleep extends battery life during intermittent use. | Use Scenario: Sterile-room ultrasound monitor requiring glove-compatible, latex-safe, and condensation-tolerant touch interface. IC Role / Device Role / Timing Role: Certified medical-grade touch controller delivering deterministic response and self-test reporting per IEC 62304. Use Value: Touchscreen sensor self-test and Panel ID reporting enable traceable calibration logs; I²C interface simplifies integration with safety-critical SoCs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-touch capacitive controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MT4100-70BGA | 40-pin scan capability, no ARM CPU, fixed firmware only | Limited to ≤5.5-inch screens; no glove/water support | Select when cost-sensitive, non-upgradable designs require basic 5-finger tracking |
| ATMXT224E-70B | Max 224 nodes, 100 Hz max refresh, no ChargerArmor™ | Requires external noise filtering; unsuitable for fast-charging consumer devices | Choose for legacy Android 4.x platforms where firmware footprint and driver maturity outweigh SNR needs |
Compared with MT4100-70BGA and ATMXT224E-70B, CYTMA448-70BUI58AET delivers higher node count, integrated ARM processing, and validated 20 VPP charger immunity-enabling next-generation touch UX in space-constrained, electrically noisy environments.
Availability
CYTMA448-70BUI58AET is available at Aetrix Electronics and suitable for smartphone display interfaces, automotive infotainment panels, industrial HMI tablets, and medical diagnostic displays requiring stable component supply and long-term lifecycle support.
Supply support for CYTMA448-70BUI58AET 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 high-performance mixed-signal ICs for embedded control, connectivity, and human interface applications.
The CYTMA448 product line targets high-reliability touch controllers for mobile, automotive, and industrial displays-emphasizing noise resilience, environmental adaptability, and field-upgradability.
FAQ
What touchscreen sensor patterns does CYTMA448-70BUI58AET support?
It supports Manhattan, Diamond, SLIM®, and Totem-pole sensor patterns, plus Sensor-on-Lens (SOL), on-cell/in-cell display integration, PET/glass substrates, and metal mesh sensors. Configuration is register-based and validated for each pattern via Cypress Manufacturing Test Kit (MTK).
Does CYTMA448-70BUI58AET require external components for charger noise suppression?
No. ChargerArmor™ is implemented entirely within the IC's analog front-end and digital filtering pipeline. No external ferrites, RC filters, or shielding are required to achieve 20 VPP immunity-verified per IEC 61000-4-6 conducted immunity testing.
Can CYTMA448-70BUI58AET operate with both I²C and SPI simultaneously?
No. The interface is selected at power-on via hardware strapping (GPIO configuration) or firmware initialization. Only one interface is active at a time; dual-interface concurrent operation is not supported.
Is Android™ driver support included out-of-the-box?
Yes. Cypress provides certified, production-ready Android™ touch drivers (HAL layer) for Android 5.0–12, including source code, integration guides, and test reports. Driver binaries are pre-qualified for Google CTS compliance on reference platforms.
CYTMA448-70BUI58AET Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 70-UFBGA
- 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:
- 70-BGA (5.5x5.5)
CYTMA448-70BUI58AET FAQ
1.How can I place an order for CYTMA448-70BUI58AET through Aetrix?
Please submit a Request for Quotation (RFQ) for CYTMA448-70BUI58AET 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 CYTMA448-70BUI58AET reliable?
The price and inventory of CYTMA448-70BUI58AET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYTMA448-70BUI58AET is usually 5 days.
3.What payment methods are accepted for CYTMA448-70BUI58AET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYTMA448-70BUI58AET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYTMA448-70BUI58AET?
CYTMA448-70BUI58AET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYTMA448-70BUI58AET 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 CYTMA448-70BUI58AET?
For technical support, including CYTMA448-70BUI58AET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYTMA448-70BUI58AET requirements.
6.How does Aetrix verify that CYTMA448-70BUI58AET is sourced from the original manufacturer or authorized distributors?
All CYTMA448-70BUI58AET 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 CYTMA448-70BUI58AET meets industry standards.
7.What is the process for return or replacement of CYTMA448-70BUI58AET?
All CYTMA448-70BUI58AET units undergo pre-shipment inspection (PSI). If there is an issue with CYTMA448-70BUI58AET, 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 CYTMA448-70BUI58AET part is unused and in its original packaging.
Return procedure for CYTMA448-70BUI58AET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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