My Inquiry
My Account
Infineon Technologies CY8C4024LQI-S402
- Part No.:
- CY8C4024LQI-S402
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-UFQFN Exposed Pad
- Datasheet:
-
CY8C4024LQI-S402.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:14,397
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C4024LQI-S402 from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller with 24 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 interface modules requiring low-power, high-SNR proximity detection and firmware-upgradable control.
For engineers reviewing the CY8C4024LQI-S402 datasheet, CY8C4024LQI-S402 pinout, CY8C4024LQI-S402 application, or CY8C4024LQI-S402 equivalent, key selection criteria include its 48-MHz CPU clock, SmartSense™ auto-tuning for water-tolerant touch, dual IDACs for analog sensor biasing, and TCPWM blocks supporting motor kill-signal triggering in safety-critical timing paths.
Technical Context
The device implements a single-layer AHB-Lite interconnect between CPU, memory, and peripherals, enabling deterministic access to 24 KB flash (with read accelerator) and 4 KB SRAM. Its programmable analog subsystem includes a sigma-delta CAPSENSE™ block delivering >5:1 SNR and two low-power comparators operational in Deep Sleep mode.
Digital resources comprise five 16-bit TCPWM blocks with center-aligned/PWM/comparator-triggered kill modes, two SCBs supporting runtime reconfiguration among I²C/SPI/UART protocols, and programmable logic blocks for Boolean operations on GPIOs - all routed via a high-speed I/O matrix without external glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time firmware execution with single-cycle multiply for control-loop math. |
| Flash Memory | 24 KB - sufficient for bootloader + application + CAPSENSE™ tuning data with field-upgrade capability. |
| SRAM | 4 KB - supports concurrent touch scan buffers, communication stacks, and real-time task context switching. |
| Operating Voltage | 1.71 V to 5.5 V - allows direct interfacing with 3.3 V or 5 V peripherals and battery-powered operation down to coin-cell levels. |
| Deep Sleep Current | 2.5 µA - enables multi-year operation in battery-powered touch sensors without compromising analog readiness. |
| CAPSENSE™ SNR | >5:1 - ensures reliable finger detection through glass or plastic overlays under wet conditions. |
| TCPWM Blocks | 5 × 16-bit - provides independent PWM generation, quadrature decoding, and hardware-triggered fault shutdown for motor control. |
Pinout & Package
Package: 40-pin QFN (6 mm × 6 mm, 0.5 mm pitch), RoHS-compliant, thermally enhanced with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply input | Accepts 1.71–5.5 V; powers digital core, analog blocks, and I/Os - requires local 100 nF decoupling. |
| VSS | Ground reference | System return path; must be connected to PCB ground plane with low-inductance routing. |
| P0[0]–P0[7] | Programmable GPIO port 0 | Support CAPSENSE™, analog input/output, or digital logic; configurable slew rate and drive strength. |
| SWDIO / SWCLK | ARM Serial Wire Debug interface | Enables in-circuit programming and full-chip debugging using standard SWD probes - no JTAG required. |
| XRES | External reset input | Active-low asynchronous reset; internal pull-up ensures valid startup without external component. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense™ Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual threshold tuning and maintains performance across temperature/humidity drift. |
| Reconfigurable SCBs | Two serial blocks dynamically switch between I²C master/slave, SPI master/slave, or UART modes at runtime - reduces BOM count and design complexity. |
| Programmable Analog Blocks | Two IDACs (up to 2 mA each) and two low-power comparators enable sensor biasing and wake-on-event detection without external components. |
| GPIO Flexibility | All 36 GPIOs support CAPSENSE™, analog, or digital functions - simplifies layout by eliminating dedicated touch pins or signal routing constraints. |
Applications
| Touch-Controlled Home Appliance Interface | Industrial HMI with Wet-Environment Tolerance |
|---|---|
Use Scenario: Glass-front microwave oven control panel with slide-to-adjust and tap-to-select functions. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ scan, interpreting gestures, driving LED indicators, and managing appliance state machine. Use Value: >5:1 SNR and SmartSense™ ensure reliable operation despite condensation, grease, or finger moisture - eliminating mechanical buttons and reducing field failures. | Use Scenario: Factory-floor operator terminal mounted near washdown zones with frequent water exposure. IC Role / Device Role / Timing Role: Real-time touch controller interfacing with PLC via UART while maintaining Deep Sleep current <3 µA during idle periods. Use Value: Dual low-power comparators remain active in Deep Sleep to wake on button press or sensor event - extending battery life beyond 5 years on primary cell. |
| Low-Power Smart Thermostat Display | Motorized Window Blind Controller |
Use Scenario: Battery-powered wall-mounted thermostat with capacitive slider for temperature setpoint adjustment. IC Role / Device Role / Timing Role: System-on-chip handling touch sensing, ambient temperature reading (via ADC), LCD segment driving, and BLE communication via SCB. Use Value: Integrated LCD drive capability on GPIOs eliminates external display driver IC - reducing layer count and bill-of-materials cost. | Use Scenario: Self-contained blind actuator with position feedback, obstacle detection, and soft-start/stop PWM control. IC Role / Device Role / Timing Role: Motor control unit generating center-aligned PWM, monitoring current sense via comparator-triggered TCPWM kill, and logging runtime data to flash. Use Value: Hardware comparator-based kill signal disables PWM within 100 ns of overcurrent detection - meeting IEC 60335 Class II safety requirements without external circuitry. |
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 |
|---|---|---|---|
| CY8C4014LQI-S402 | 16 KB flash, same package and peripheral set - lacks one SCB and one TCPWM block. | Suitable for simpler touch-only nodes without serial bridging or multi-axis motor control. | Select when firmware footprint <16 KB and only one communication interface is needed. |
| STM32G031K8T6 | No native CAPSENSE™; requires external RC network and software-based touch algorithm - SNR typically <3:1. | Applicable where touch is secondary and cost-per-GPIO is prioritized over wet-environment reliability. | Choose only if CAPSENSE™ robustness is non-critical and existing STM32 toolchain familiarity offsets development time loss. |
Compared with CY8C4014LQI-S402, the CY8C4024LQI-S402 adds 8 KB flash and a second SCB for dual-interface bridging; versus STM32G031K8T6, it delivers certified water-tolerant touch sensing and hardware-accelerated tuning - eliminating firmware overhead and calibration effort.
Availability
CY8C4024LQI-S402 is available at Aetrix Electronics and suitable for touch-enabled home appliances, industrial HMIs, battery-powered thermostats, and motorized actuator control requiring stable component supply and long-term lifecycle assurance.
Supply support for CY8C4024LQI-S402 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 connectivity solutions, with global R&D and manufacturing infrastructure.
The PSoC™ 4000S product line targets cost-sensitive, low-power embedded systems requiring integrated analog sensing, programmable logic, and robust capacitive touch - especially where mechanical button replacement and field-upgradable firmware are critical.
FAQ
What debug interfaces does CY8C4024LQI-S402 support?
CY8C4024LQI-S402 uses Arm® Serial Wire Debug (SWD) with SWDIO and SWCLK pins. It supports full in-circuit programming, real-time variable inspection, and breakpoint debugging without JTAG. The debug circuits are enabled by default but can be disabled in firmware to prevent unauthorized access to flash contents.
Does CY8C4024LQI-S402 require external crystals for operation?
No. It includes an internal ±2% main oscillator (IMO) for full-speed operation and a 32 kHz internal low-power oscillator (ILO) for Deep Sleep timing. A 32 kHz watch crystal oscillator (WCO) is optional and used only when higher RTC accuracy is required - not needed for basic CAPSENSE™ or TCPWM functionality.
Can all GPIO pins be used for CAPSENSE™ simultaneously?
Yes - all 36 GPIOs are CAPSENSE™-capable, but practical simultaneous use depends on scan time and SNR requirements. The sigma-delta CAPSENSE™ block supports up to 24 self-capacitance or 12 mutual-capacitance sensors per scan, with hardware-accelerated baseline tracking and noise filtering.
What development tools are officially supported for this MCU?
Infineon officially supports ModusToolbox™ (cross-platform, Eclipse-based) and PSoC™ Creator (Windows-only, schematic-driven). Both provide CAPSENSE™ Tuner GUI, TCPWM configurator, and SCB protocol stack generators. CY8CKIT-145-40XX is the recommended evaluation kit, featuring direct access to all 40 pins and onboard MiniProg4 debugger.
CY8C4024LQI-S402 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-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:
- 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-S402 FAQ
1.How can I place an order for CY8C4024LQI-S402 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4024LQI-S402 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-S402 reliable?
The price and inventory of CY8C4024LQI-S402 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4024LQI-S402 is usually 5 days.
3.What payment methods are accepted for CY8C4024LQI-S402?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4024LQI-S402 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4024LQI-S402?
CY8C4024LQI-S402 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4024LQI-S402 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-S402?
For technical support, including CY8C4024LQI-S402 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4024LQI-S402 requirements.
6.How does Aetrix verify that CY8C4024LQI-S402 is sourced from the original manufacturer or authorized distributors?
All CY8C4024LQI-S402 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-S402 meets industry standards.
7.What is the process for return or replacement of CY8C4024LQI-S402?
All CY8C4024LQI-S402 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4024LQI-S402, 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-S402 part is unused and in its original packaging.
Return procedure for CY8C4024LQI-S402:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C4024LQI-S402 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
