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Infineon Technologies CY8C4024LQI-S402T
- Part No.:
- CY8C4024LQI-S402T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-UFQFN Exposed Pad
- Datasheet:
-
CY8C4024LQI-S402T.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:881
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Product details
Overview
CY8C4024LQI-S402T from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller with 24 KB flash, 4 KB SRAM, and integrated CAPSENSE™ capacitive touch-sensing subsystem. It operates from 1.71 V to 5.5 V, supports Deep Sleep mode at 2.5 µA system current, and includes two reconfigurable serial communication blocks (SCBs) for I²C/SPI/UART. Used in human-interface modules requiring robust water-tolerant touch control and low-power operation.
For engineers reviewing the CY8C4024LQI-S402T datasheet, CY8C4024LQI-S402T pinout, CY8C4024LQI-S402T application, or CY8C4024LQI-S402T equivalent, key selection criteria include CAPSENSE™ SNR (>5:1), programmable analog/digital blocks, TCPWM flexibility, and compatibility with ModusToolbox™ and PSoC™ Creator design environments.
Technical Context
The device integrates a single-cycle multiply Arm® Cortex®-M0+ CPU running at up to 48 MHz, with on-chip 24 KB flash (read accelerator enabled) and 4 KB SRAM. System-level resources include five 16-bit TCPWM blocks supporting center-aligned PWM, comparator-triggered kill signals, and hardware-based SmartSense auto-tuning for CAPSENSE™.
Analog functionality centers on a capacitive sigma-delta sensing engine delivering >5:1 SNR and water tolerance, plus two IDACs and two low-power comparators operational in Deep Sleep. Digital flexibility comes from programmable logic blocks and two SCBs that can be independently configured as I²C, SPI, or UART at runtime.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time firmware execution with deterministic interrupt latency for touch and motor control. |
| Flash Memory | 24 KB - sufficient for CAPSENSE™ middleware, communication stacks, and application logic without external storage. |
| SRAM | 4 KB - supports dual-bank buffering for touch scan + communication processing in low-power modes. |
| Supply Voltage | 1.71 V to 5.5 V - allows direct interface with 3.3 V or 5 V peripherals and battery-powered operation down to coin-cell levels. |
| Deep Sleep Current | 2.5 µA digital system current - enables multi-year operation in battery-powered touch interfaces with periodic wake-up. |
| CAPSENSE™ SNR | >5:1 - ensures reliable touch detection under wet conditions and EMI noise without firmware compensation. |
| TCPWM Blocks | 5 × 16-bit - supports simultaneous motor control, LED dimming, and timing-critical sensor synchronization. |
Pinout & Package
Package: 40-pin QFN (6 × 6 mm, 0.5 mm pitch), thermally enhanced with exposed pad. Pin mapping validated per Infineon datasheet 002-00123 Rev. *Q, Section 4 "Pinouts".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply input | Accepts 1.71–5.5 V; powers digital core, analog blocks, and GPIOs. |
| VSS | Ground reference | Common return path for all domains; requires low-impedance PCB connection to exposed thermal pad. |
| P0[0]–P0[7] | Programmable GPIO port 0 | Support CAPSENSE™, analog input/output, digital logic, or LCD segment drive; configurable slew rate and drive strength. |
| SWDIO / SWCLK | ARM Serial Wire Debug interface | Enables full-chip programming and real-time debugging using MiniProg4 or industry-standard SWD tools. |
| XTAL_IN / XTAL_OUT | 32 kHz watch crystal oscillator terminals | Supports precise RTC timing and low-power wake-up; optional when using internal ILO. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual firmware tuning and maintains performance across temperature/humidity drift. |
| Reconfigurable SCBs | Two independent serial blocks dynamically switch between I²C, SPI, and UART protocols without reset - simplifies BOM and firmware reuse across variants. |
| Programmable analog blocks | Two IDACs and two low-power comparators operate in Deep Sleep - enables always-on touch wake-up with sub-µA analog monitoring. |
| GPIO flexibility | All 36 GPIOs support CAPSENSE™, analog, or digital functions; each pin has programmable drive mode, strength, and slew rate - reduces need for external level shifters or buffers. |
Applications
| Home Appliance Control Panel | Industrial HMI Touch Interface |
|---|---|
Use Scenario: Waterproof touch buttons on washing machine or oven control panel exposed to steam and condensation. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ scan, managing display backlight via PWM, and communicating status over I²C to main controller. Use Value: >5:1 SNR and hardware SmartSense ensure reliable button detection even with wet fingers or surface moisture, eliminating mechanical switches and reducing field failures. | Use Scenario: Operator panel on factory equipment requiring ESD-hardened, low-power touch interaction in noisy industrial environments. IC Role / Device Role / Timing Role: Standalone touch controller interfacing to PLC via UART; uses TCPWM for LED status indicators and Deep Sleep for energy efficiency during idle periods. Use Value: 2.5 µA Deep Sleep current extends battery life in portable diagnostic tools, while programmable GPIO drive strength mitigates ESD-induced resets. |
| Medical Patient Monitor UI | Smart Thermostat Front Panel |
Use Scenario: Touch-sensitive front bezel on bedside monitor where hygiene and glove operation are critical. IC Role / Device Role / Timing Role: Dedicated CAPSENSE™ subsystem processor handling multi-touch gesture decoding and sending results over SPI to host MCU. Use Value: Capacitive sigma-delta architecture provides high immunity to electromagnetic interference from adjacent medical equipment, ensuring consistent responsiveness. | Use Scenario: Battery-powered wall-mounted thermostat with capacitive touch controls and LCD display. IC Role / Device Role / Timing Role: System-on-chip managing touch input, segment LCD drive, temperature sensing via ADC, and wireless module wakeup via GPIO interrupt. Use Value: Integrated LCD segment drive eliminates external driver IC; 1.71 V minimum supply enables operation down to single AA battery voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller-with-integrated-capacitive-touch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4014LQI-S402 | 24 KB flash, same package, but lacks WCO (32 kHz crystal oscillator) and has only one SCB. | Suitable for simpler touch-only designs without RTC or dual-protocol communication needs. | Select when cost sensitivity outweighs need for crystal accuracy or dual serial interfaces. |
| STM32G031K8T6 | Arm® Cortex®-M0+, 64 KB flash, no native CAPSENSE™; requires external touch controller or software-based solution. | Requires additional BOM components and firmware effort to achieve comparable touch robustness and SNR. | Select when leveraging existing STM32 ecosystem and external touch ICs are acceptable for design reuse. |
Compared with CY8C4014LQI-S402 and STM32G031K8T6, the CY8C4024LQI-S402T uniquely delivers production-ready CAPSENSE™ with hardware SmartSense, dual reconfigurable SCBs, and WCO support - reducing development time and component count for touch-centric embedded systems.
Availability
CY8C4024LQI-S402T is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMI interfaces, medical patient monitors, and smart thermostat front panels requiring stable component supply and long-term manufacturability.
Supply support for CY8C4024LQI-S402T 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, industrial, and embedded solutions, with global R&D and manufacturing infrastructure.
The PSoC™ 4000S product line targets cost-sensitive, low-power embedded systems requiring integrated analog, digital, and capacitive touch capabilities - designed specifically for rapid prototyping and production deployment of human-interface devices.
FAQ
Does CY8C4024LQI-S402T support hardware-based touch tuning without firmware intervention?
Yes. The device implements SmartSense - a hardware-accelerated auto-tuning engine for CAPSENSE™ that dynamically adjusts sensor parameters (IDAC, resolution, scan speed) in real time. This eliminates manual calibration and maintains stable performance across environmental variations like humidity, temperature, and electrode aging - no user firmware code required for baseline tuning.
What debug interfaces does CY8C4024LQI-S402T support, and are they available in production units?
CY8C4024LQI-S402T supports ARM Serial Wire Debug (SWD) via dedicated SWDIO and SWCLK pins. Debug circuits are enabled by default and fully functional in standard production devices - no special debug variants or external pods needed. Full programming, breakpointing, and memory inspection are supported using MiniProg4 or any SWD-compliant toolchain.
Can the GPIOs drive an LCD directly, and what segment count is supported?
Yes. The device supports static and multiplexed LCD segment driving directly from GPIOs, with up to 28 segments and 4 commons (28×4 configuration) depending on pin assignment and bias scheme. No external LCD driver IC is required, reducing BOM count and PCB area - verified in Infineon's AN88619 and device-specific pinout tables.
Is ModusToolbox™ software required, or can legacy PSoC™ Creator be used for this part?
Both ModusToolbox™ and PSoC™ Creator are officially supported. PSoC™ Creator v4.4+ fully supports CY8C4024LQI-S402T with schematic-based design, pre-verified CAPSENSE™ components, and automatic routing. ModusToolbox™ offers modern IDE-neutral workflows with PDL drivers and GitHub-hosted examples - choice depends on team preference and project scale, not device capability.
CY8C4024LQI-S402T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-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:
- 27
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K 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:
CY8C4024LQI-S402T FAQ
1.How can I place an order for CY8C4024LQI-S402T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4024LQI-S402T 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 CY8C4024LQI-S402T reliable?
The price and inventory of CY8C4024LQI-S402T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4024LQI-S402T is usually 5 days.
3.What payment methods are accepted for CY8C4024LQI-S402T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4024LQI-S402T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4024LQI-S402T?
CY8C4024LQI-S402T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4024LQI-S402T 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 CY8C4024LQI-S402T?
For technical support, including CY8C4024LQI-S402T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4024LQI-S402T requirements.
6.How does Aetrix verify that CY8C4024LQI-S402T is sourced from the original manufacturer or authorized distributors?
All CY8C4024LQI-S402T 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 CY8C4024LQI-S402T meets industry standards.
7.What is the process for return or replacement of CY8C4024LQI-S402T?
All CY8C4024LQI-S402T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4024LQI-S402T, 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 CY8C4024LQI-S402T part is unused and in its original packaging.
Return procedure for CY8C4024LQI-S402T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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