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Infineon Technologies CY8C4024LQI-S411
- Part No.:
- CY8C4024LQI-S411
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY8C4024LQI-S411.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 24SQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,626
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Product details
Overview
CY8C4024LQI-S411 from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller with 24 KB flash, 4 KB SRAM, and integrated CAPSENSE™ capacitive touch-sensing engine. It operates from 1.71 V to 5.5 V, supports Deep Sleep mode at 2.5 µA system current, and delivers best-in-class SNR (>5:1) for water-tolerant human interface applications in consumer and industrial control panels.
For engineers reviewing the CY8C4024LQI-S411 datasheet, CY8C4024LQI-S411 pinout, CY8C4024LQI-S411 application, or CY8C4024LQI-S411 equivalent, key selection criteria include its 48-MHz CPU clock, dual SCB blocks (reconfigurable as I²C/SPI/UART), five 16-bit TCPWM units, programmable analog IDACs and comparators, and 36 GPIOs with full CAPSENSE™ and LCD segment drive capability.
Technical Context
The device integrates a single-cycle multiply Arm® Cortex®-M0+ core running up to 48 MHz, coupled with a dedicated CAPSENSE™ v2 sigma-delta sensing engine that enables hardware-accelerated touch detection with SmartSense auto-tuning. Its analog subsystem includes two low-power comparators operational in Deep Sleep and two current DACs usable on any GPIO for sensor biasing or touch current sourcing.
Digital flexibility is provided by five TCPWM blocks supporting center-aligned PWM, comparator-triggered kill signals for motor safety, and two reconfigurable serial communication blocks (SCBs) that can be independently assigned as I²C, SPI, or UART - all without requiring external components or pin remapping 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 responsive HMI and control loops. |
| Flash / SRAM | 24 KB flash with read accelerator / 4 KB SRAM - sufficient for CAPSENSE™-enabled firmware plus communication stacks and small control algorithms. |
| Supply Range | 1.71 V to 5.5 V - supports direct connection to Li-ion, USB, or industrial 3.3/5 V rails without level-shifting or LDO overhead. |
| Deep Sleep Current | 2.5 µA digital system current - allows battery-powered touch interfaces to operate for years on coin cells. |
| CAPSENSE™ SNR | >5:1 signal-to-noise ratio - ensures reliable touch detection under wet conditions and EMI-rich environments. |
| TCPWM Blocks | 5 × 16-bit timer/counter/PWM - supports multi-channel motor control, LED dimming, and encoder counting with hardware kill input for fault response. |
| SCBs | 2 × reconfigurable serial blocks - each supports I²C, SPI, or UART in software-defined mode, reducing BOM count and PCB footprint. |
| GPIO Count | 36 programmable pins - all support CAPSENSE™, analog, or digital functions with configurable drive strength, slew rate, and pull-up/down. |
Pinout & Package
Package: 40-pin QFN (6 × 6 mm, 0.5 mm pitch), RoHS-compliant, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply | 1.71–5.5 V input powering core, analog, and I/O domains; requires local 100 nF decoupling. |
| VSS | Ground reference | Digital and analog ground return; must be connected to low-impedance PCB plane for CAPSENSE™ noise immunity. |
| P0[0]–P0[7] | General-purpose I/O | Port 0 pins support CAPSENSE™ CSD, analog input/output, and LCD segment drive; configurable slew rate reduces EMI. |
| P1[0]–P1[7] | General-purpose I/O | Port 1 pins include SWDIO/SWCLK for debug; also support TCPWM capture/compare and SCB peripheral functions. |
| XRES | External reset input | Active-low asynchronous reset; internal pull-up enables single-button reset without external resistor. |
| WCO_IN / WCO_OUT | 32.768 kHz crystal interface | Connects to watch crystal for precise RTC timing and low-power wake-up intervals independent of main oscillator. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning across temperature/humidity and production variance. |
| Programmable analog IDACs | Two current DACs (0.1–8 mA range) assignable to any GPIO enable flexible sensor biasing and touch current sourcing without external components. |
| Deep Sleep with active analog | Low-power comparators remain functional during 2.5 µA Deep Sleep, enabling wake-on-touch or threshold-crossing events. |
| Reconfigurable SCBs | Each serial block dynamically switches between I²C, SPI, and UART protocols via firmware - no hardware change required. |
| LCD segment drive | Up to 36 GPIOs double as LCD segment drivers (common/segment outputs), eliminating need for external display controllers in simple UIs. |
Applications
| Home Appliance Control Panel | Industrial HMI Keypad |
|---|---|
Use Scenario: Touch-enabled oven, washer, or HVAC control panel exposed to moisture and cleaning agents. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, managing display backlight PWM, and communicating with main controller via I²C. Use Value: >5:1 SNR and water tolerance ensure reliable operation even with wet fingers or condensation on glass overlay. | Use Scenario: Ruggedized operator interface in factory automation equipment with metal bezel and EMI exposure. IC Role / Device Role / Timing Role: Standalone touch controller interfacing to PLC via UART, performing debounce, gesture recognition, and LED status feedback. Use Value: Deep Sleep at 2.5 µA extends battery backup life; programmable drive strength mitigates ESD-induced false triggers. |
| Smart Thermostat Interface | Medical Device Touch Panel |
Use Scenario: Battery-powered wall-mounted thermostat with ambient light sensing and rotary encoder emulation. IC Role / Device Role / Timing Role: System-on-chip handling capacitive slider, temperature ADC reading, BLE communication (via SCB), and sleep/wake scheduling. Use Value: Integrated 32 kHz WCO enables accurate timekeeping and periodic wake-ups for sensor polling without external RTC. | Use Scenario: Patient monitor front panel requiring IEC 60601-1 compliance, low EMI, and fail-safe touch response. IC Role / Device Role / Timing Role: Dedicated CAPSENSE™ controller with hardware-based noise rejection, isolated from main application processor via SPI. Use Value: Dual low-power comparators in Deep Sleep allow immediate wake-on-critical alarm button press while minimizing standby power. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable MCU with integrated capacitive touch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4024LQI-S412 | Same die, 32 KB flash (vs. 24 KB); identical package, pinout, and peripherals. | Supports larger firmware images with additional middleware or secure boot code. | Select when firmware size exceeds 24 KB or future-proofing for feature expansion is required. |
| STM32G031K8T6 | No integrated CAPSENSE™; requires external RC network and firmware-based touch algorithm; 64 KB flash, 8 KB SRAM. | Suitable for cost-sensitive designs where touch performance requirements are moderate and BOM flexibility is prioritized. | Choose only if touch channel count is low (<8), SNR >5:1 is not mandatory, and external component count is acceptable. |
Compared with CY8C4024LQI-S411, the S412 offers headroom in flash capacity without changing layout or firmware architecture, while the STM32G031 requires significant touch algorithm development and lacks hardware SNR optimization - making it less suitable for wet-environment or high-reliability HMI.
Availability
CY8C4024LQI-S411 is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMI keypads, smart thermostats, and medical device touch panels requiring stable component supply, long-term lifecycle support, and qualified automotive-grade traceability.
Supply support for CY8C4024LQI-S411 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 embedded security solutions, with global manufacturing and quality certifications including IATF 16949 and ISO 9001.
The PSoC™ 4000S product line targets cost-optimized, highly integrated HMI and control applications where programmable analog/digital resources, CAPSENSE™ reliability, and ultra-low-power operation are critical design requirements.
FAQ
Does CY8C4024LQI-S411 support USB connectivity?
No. The CY8C4024LQI-S411 does not include a USB PHY or USB controller. Communication is limited to the two reconfigurable SCB blocks supporting I²C, SPI, or UART only. For USB host or device functionality, an external transceiver or a higher-tier PSoC™ device such as CY8C6xx7 is required.
What development tools are officially supported for this MCU?
Infineon officially supports ModusToolbox™ software (cross-platform, Eclipse-based) and PSoC™ Creator (Windows-only IDE). Both provide full CAPSENSE™ configuration, TCPWM setup, and SCB peripheral initialization. Debugging uses standard Arm® Serial Wire Debug (SWD) via MiniProg4 or KitProg3 programmers.
Can the CAPSENSE™ block operate during Deep Sleep mode?
Yes. The CAPSENSE™ sensing engine remains active in Deep Sleep mode with 2.5 µA system current. Hardware-accelerated scanning and SmartSense auto-tuning continue without waking the CPU, enabling true wake-on-touch functionality with sub-100 ms response latency.
Is there hardware encryption support on this device?
No. The CY8C4024LQI-S411 does not include AES, SHA, or TRNG hardware accelerators. Security relies on software-based implementations or external secure elements. For cryptographic operations, consider the PSoC™ 4100S or PSoC™ 6 families, which integrate dedicated crypto engines and secure boot ROM.
CY8C4024LQI-S411 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 24-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4000S
- Packaging:
- Tray
- 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:
- 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-S411 FAQ
1.How can I place an order for CY8C4024LQI-S411 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4024LQI-S411 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-S411 reliable?
The price and inventory of CY8C4024LQI-S411 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4024LQI-S411 is usually 5 days.
3.What payment methods are accepted for CY8C4024LQI-S411?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4024LQI-S411 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4024LQI-S411?
CY8C4024LQI-S411 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4024LQI-S411 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-S411?
For technical support, including CY8C4024LQI-S411 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4024LQI-S411 requirements.
6.How does Aetrix verify that CY8C4024LQI-S411 is sourced from the original manufacturer or authorized distributors?
All CY8C4024LQI-S411 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-S411 meets industry standards.
7.What is the process for return or replacement of CY8C4024LQI-S411?
All CY8C4024LQI-S411 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4024LQI-S411, 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-S411 part is unused and in its original packaging.
Return procedure for CY8C4024LQI-S411:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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