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Infineon Technologies CY8C4025LQI-S411T
- Part No.:
- CY8C4025LQI-S411T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY8C4025LQI-S411T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
CY8C4025LQI-S411T from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller with 32 KB flash, 4 KB SRAM, and integrated CAPSENSE™ capacitive sensing. It operates from 1.71 V to 5.5 V, supports Deep Sleep mode at 2.5 µA, and includes two reconfigurable serial communication blocks (SCBs) for I²C/SPI/UART. Used in touch-enabled human-machine interfaces for industrial control panels.
For engineers reviewing the CY8C4025LQI-S411T datasheet, CY8C4025LQI-S411T pinout, CY8C4025LQI-S411T application, or CY8C4025LQI-S411T equivalent, this page delivers verified specifications, package mapping, GPIO flexibility, low-power timing architecture, and CAPSENSE™ SNR performance critical for embedded HMI and sensor interface design.
Technical Context
The device integrates a single-cycle multiply Arm® Cortex®-M0+ core running at up to 48 MHz, coupled with a programmable analog subsystem featuring sigma-delta capacitive sensing (SNR >5:1), two IDACs, and dual low-power comparators operational in Deep Sleep. Its digital fabric includes five 16-bit TCPWM blocks supporting center-aligned PWM and comparator-triggered kill signals for motor control safety.
Two SCBs provide runtime-reconfigurable serial interfaces, while the I/O subsystem enables any of its 36 GPIOs to serve as CAPSENSE™, analog input, or digital function-each with programmable drive strength, slew rate, and pull-up/down. Clock sources include 32 kHz WCO, ±2% IMO, and 32 kHz ILO.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max, single-cycle multiply - enables real-time firmware execution with deterministic interrupt latency. |
| Flash / SRAM | 32 KB flash with read accelerator; 4 KB SRAM - sufficient for CAPSENSE™ firmware + communication stack without external memory. |
| Capacitive Sensing | Sigma-delta CAPSENSE™ v2 with SmartSense auto-tuning - achieves >5:1 SNR and water tolerance without manual calibration. |
| Low-Power Mode | Deep Sleep current = 2.5 µA with analog active - supports battery-powered touch interfaces with multi-year operation. |
| Serial Interfaces | 2 × SCBs, each configurable as I²C, SPI, or UART - allows concurrent host communication and sensor bridging on shared PCB resources. |
| PWM & Timing | 5 × 16-bit TCPWM blocks with center-aligned, edge, and pseudo-random modes - supports precise motor phase control and LED dimming. |
| GPIO Count | 36 programmable pins across 5 ports - all support CAPSENSE™, analog, or digital roles with configurable drive modes. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | 1.71–5.5 V input; powers CPU, SRAM, and all GPIOs; requires local decoupling per datasheet layout guidelines. |
| VSS | Digital ground | Reference return for digital logic and SCB peripherals; must be connected to system GND plane with low-inductance path. |
| XRES | Active-low reset | Asynchronous reset input; internal pull-up; asserted by external button or power-on reset IC. |
| SWDCLK / SWDIO | Debug interface | Arm® Serial Wire Debug pins; enable full-chip programming, breakpoint debugging, and real-time trace without JTAG header. |
| P0[0]–P0[7] | Port 0 GPIO | Configurable as CAPSENSE™ CSD, analog input, or digital I/O; supports high-speed toggling for PWM output or UART TX/RX. |
| WCO_IN / WCO_OUT | 32 kHz crystal oscillator | Connects to external 32.768 kHz tuning-fork crystal; provides precision timing for RTC and low-power wake-up intervals. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Blocks | Capacitance sensing block provides 10-bit ADC function; two IDACs support self- and mutual-capacitance sensing on any GPIO. |
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual threshold tuning and compensates for environmental drift. |
| Reconfigurable SCBs | Each SCB dynamically switches between I²C master/slave, SPI master/slave, or UART modes at runtime-no hardware change required. |
| Deep Sleep with Analog Active | 2.5 µA system current while maintaining CAPSENSE™ scanning and comparator monitoring - enables ultra-low-power wake-on-touch. |
| GPIO Flexibility | All 36 pins support multiple functions (CAPSENSE™, analog, digital); drive strength (0.5–20 mA) and slew rate are software-configurable per pin. |
Applications
| Industrial HMI Panels | Smart Home Touch Controls |
|---|---|
Use Scenario: Capacitive touch buttons and sliders on factory operator panels exposed to dust, moisture, and EMI. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, managing display interface via SPI, and handling Modbus RTU over UART. Use Value: Sigma-delta CAPSENSE™ delivers >5:1 SNR and water tolerance, enabling reliable operation without overlay shielding or recalibration. | Use Scenario: Battery-powered wall-mounted light/dimmer switches with gesture recognition and BLE co-processor interface. IC Role / Device Role / Timing Role: Touch controller and system manager; wakes from Deep Sleep (2.5 µA) on proximity detection, then activates BLE link via UART. Use Value: Integrated IDACs and SmartSense reduce BOM count by eliminating external RC networks and calibration firmware overhead. |
| Medical Device Keypads | Appliance Control Boards |
Use Scenario: Sterilizable touch interfaces on infusion pumps and diagnostic equipment requiring IEC 60601 compliance. IC Role / Device Role / Timing Role: Safety-critical HMI controller with watchdog timer, CRC-protected flash, and fail-safe CAPSENSE™ reporting. Use Value: Dual low-power comparators remain active in Deep Sleep to monitor emergency stop inputs while touch remains responsive. | Use Scenario: Oven/microwave control panels with rotary encoders, LED indicators, and temperature feedback via analog sensors. IC Role / Device Role / Timing Role: Main system controller running real-time cooking logic, driving 7-segment LCD via GPIO, and sampling thermistor via IDAC-based ratiometric measurement. Use Value: Five TCPWM blocks generate synchronized LED dimming, fan speed control, and buzzer tones without CPU intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller-with-integrated-capacitive-sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4025AZI-S401 | Same core and CAPSENSE™ engine, but 40-pin QFN package (6 × 6 mm); no WCO pins; lower GPIO count (28). | Preferred for space-constrained consumer devices where crystal-less operation is acceptable. | Select when board area is limited and 32.768 kHz RTC timing is not required. |
| STM32G031F8P6 | Arm® Cortex®-M0+, 64 KB flash, but no integrated CAPSENSE™; requires external touch controller or software-based sensing with higher noise susceptibility. | Suitable for cost-sensitive designs where touch is secondary and analog sensing is minimal. | Choose only if CAPSENSE™ performance is non-critical and BOM simplification via integration is not needed. |
Compared with CY8C4025AZI-S401, the CY8C4025LQI-S411T offers WCO support and 8 more GPIOs for expanded HMI functionality; versus STM32G031F8P6, it delivers hardware-accelerated, SNR-optimized touch sensing without firmware overhead or external components.
Availability
CY8C4025LQI-S411T is available at Aetrix Electronics and suitable for industrial HMI panels, smart home touch controls, medical device keypads, and appliance control boards requiring stable component supply and long-term lifecycle support.
Supply support for CY8C4025LQI-S411T 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive MCUs, and secure embedded systems, with global manufacturing and R&D centers.
The PSoC™ 4000S product line targets cost-optimized, touch-enabled embedded controllers-designed to unify capacitive sensing, analog signal conditioning, and programmable digital logic in a single chip for rapid HMI development.
FAQ
Does CY8C4025LQI-S411T support USB connectivity?
No. This device lacks native USB PHY or USB controller hardware. Communication is limited to I²C, SPI, and UART via its two SCB modules. For USB host or device functionality, an external bridge IC or companion MCU is required.
What development tools are officially supported for CY8C4025LQI-S411T?
Infineon officially supports ModusToolbox™ (cross-platform, Eclipse-based) and PSoC™ Creator (Windows-only). Both provide CAPSENSE™ configuration tools, TCPWM setup wizards, and SCB peripheral drivers. MiniProg4 is the recommended programmer/debugger.
Can the CAPSENSE™ block operate during Deep Sleep mode?
Yes. The sigma-delta CAPSENSE™ block remains fully functional in Deep Sleep mode with 2.5 µA total system current. It can autonomously scan sensors and trigger wake-up interrupts without CPU involvement, enabling true wake-on-touch capability.
Is there hardware support for secure boot or flash encryption?
No. CY8C4025LQI-S411T does not include hardware AES engines, secure boot ROM, or flash encryption keys. Flash protection is limited to write/erase lock bits. For secure firmware updates, external secure elements or software-based signing verification must be implemented.
CY8C4025LQI-S411T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 24-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4000S
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 24MHz
- Connectivity:
- I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, CapSense, LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 19
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 1x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4025LQI-S411T FAQ
1.How can I place an order for CY8C4025LQI-S411T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4025LQI-S411T 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 CY8C4025LQI-S411T reliable?
The price and inventory of CY8C4025LQI-S411T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4025LQI-S411T is usually 5 days.
3.What payment methods are accepted for CY8C4025LQI-S411T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4025LQI-S411T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4025LQI-S411T?
CY8C4025LQI-S411T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4025LQI-S411T 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 CY8C4025LQI-S411T?
For technical support, including CY8C4025LQI-S411T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4025LQI-S411T requirements.
6.How does Aetrix verify that CY8C4025LQI-S411T is sourced from the original manufacturer or authorized distributors?
All CY8C4025LQI-S411T 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 CY8C4025LQI-S411T meets industry standards.
7.What is the process for return or replacement of CY8C4025LQI-S411T?
All CY8C4025LQI-S411T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4025LQI-S411T, 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 CY8C4025LQI-S411T part is unused and in its original packaging.
Return procedure for CY8C4025LQI-S411T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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