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Infineon Technologies CY8C4024LQI-S403
- Part No.:
- CY8C4024LQI-S403
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4024LQI-S403.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,784
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Product details
Overview
CY8C4024LQI-S403 from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller with 24 KB flash, 4 KB SRAM, and integrated CAPSENSE™ capacitive sensing, operating from 1.71 V to 5.5 V. It features two reconfigurable serial communication blocks (SCBs), five 16-bit TCPWMs, two low-power comparators, and supports Deep Sleep mode at 2.5 µA system current - deployed in human-interface consumer electronics, smart home controls, and industrial HMI panels.
For engineers reviewing the CY8C4024LQI-S403 datasheet, CY8C4024LQI-S403 pinout, CY8C4024LQI-S403 application, or CY8C4024LQI-S403 equivalent, key selection criteria include CAPSENSE™ SNR (>5:1), programmable analog/digital routing, 48-MHz CPU performance, and compatibility with ModusToolbox™ and PSoC™ Creator design environments.
Technical Context
The device implements a single-cycle multiply Arm® Cortex®-M0+ core running at up to 48 MHz, paired with a flexible interconnect matrix enabling dynamic routing between programmable analog blocks (e.g., IDACs, sigma-delta CAPSENSE™), digital logic (PLD), and fixed peripherals (TCPWM, SCB). Its system architecture integrates an IMO (±2%), WCO, and ILO for multi-source clocking.
Capacitive sensing uses a dedicated sigma-delta modulator with hardware-accelerated SmartSense™ auto-tuning, delivering >5:1 SNR and water tolerance without firmware intervention. Analog resources include two current DACs usable on any GPIO and two comparators operational in Deep Sleep mode with 2.5 µA total system current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time sensor fusion and responsive UI control in resource-constrained edge nodes. |
| Flash / SRAM | 24 KB flash / 4 KB SRAM - sufficient for CAPSENSE™-enabled firmware with BLE stack integration and local decision logic. |
| GPIO Count | 36 programmable pins - supports mixed-signal routing: simultaneous analog sensing, digital PWM drive, and SCB-based I²C/SPI/UART comms. |
| CAPSENSE™ | Sigma-delta modulator with >5:1 SNR and hardware SmartSense™ tuning - eliminates manual calibration for wet-environment touch interfaces. |
| Low-Power Mode | Deep Sleep at 2.5 µA - sustains capacitive wake-up detection while preserving battery life in portable and energy-harvested devices. |
| Serial Peripherals | 2 × SCBs - runtime-reconfigurable as I²C, SPI, or UART - simplifies interface adaptation across sensor, display, and host connectivity requirements. |
| Timing Blocks | 5 × 16-bit TCPWM - supports center-aligned PWM for motor control, pseudo-random dithering, and comparator-triggered kill signals in safety-critical logic. |
Pinout & Package
Package: 40-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| 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 - enables single-rail operation across diverse system voltages. |
| VSS | Ground reference | Dedicated analog/digital ground plane connection - critical for CAPSENSE™ noise immunity and ADC accuracy. |
| P0[0]–P0[7] | Programmable GPIO port 0 | Support CAPSENSE™, analog input/output, or digital logic; configurable slew rate and drive strength per pin. |
| SWDIO / SWCLK | ARM Serial Wire Debug interface | Enables full-chip programming and real-time debugging using MiniProg4 or third-party SWD tools - no external emulator required. |
| XRES | External reset input | Active-low asynchronous reset - allows system-level fault recovery independent of internal POR circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Routing | Direct connection of IDACs, comparators, and CAPSENSE™ blocks to any GPIO - eliminates external signal conditioning components in touch and sensor front-ends. |
| SmartSense™ Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration - reduces firmware development time by removing manual threshold and baseline tuning for production variants. |
| Reconfigurable SCBs | Two serial blocks dynamically switch between I²C, SPI, and UART protocols at runtime - enables single-BOM flexibility across multiple product SKUs or field-upgradable interfaces. |
| Deep Sleep with Active Analog | 2.5 µA system current while maintaining CAPSENSE™ wake capability and comparator monitoring - extends battery life in always-on touch interfaces beyond 1 year on coin cell. |
| Integrated Clock System | IMO (±2%), WCO, and ILO - provides precision timing for RTC, low-power sensing, and high-speed CPU operation without external crystals in most use cases. |
Applications
| Consumer Touch Remote | Industrial HMI Panel |
|---|---|
Use Scenario: Battery-powered infrared remote with gesture-capable touchpad and backlight dimming. IC Role / Device Role / Timing Role: MCU host managing CAPSENSE™ touch detection, IR transmission timing, and PWM-controlled LED brightness. Use Value: Single-chip solution replaces discrete touch controller + MCU + LED driver - reduces BOM count and PCB area by 35%. | Use Scenario: Factory-floor operator panel with metal-over-glass touch interface and environmental moisture exposure. IC Role / Device Role / Timing Role: Primary controller executing CAPSENSE™ with water-tolerant sigma-delta sensing and real-time status display via SPI-driven segment LCD. Use Value: Hardware SmartSense™ maintains reliable touch response under condensation - eliminates false triggers without firmware recalibration. |
| Smart Thermostat Interface | Portable Medical Device UI |
Use Scenario: HVAC thermostat with rotary encoder emulation, temperature logging, and wireless update capability. IC Role / Device Role / Timing Role: System-on-chip handling capacitive scroll wheel, 16-bit TCPWM fan speed control, and SCB-based UART for firmware updates. Use Value: Five TCPWM blocks enable concurrent motor control, LED fading, and audio tone generation - avoids external timer ICs. | Use Scenario: Handheld glucose meter with capacitive button interface, low-power display, and USB charging detection. IC Role / Device Role / Timing Role: Main controller executing CAPSENSE™, analog front-end biasing, and USB enumeration via SCB configured as USB CDC UART. Use Value: Deep Sleep at 2.5 µA preserves battery during standby - achieves >2-year shelf life on CR2032 cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable MCU with integrated capacitive sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4014LQI-S402 | 24 KB flash, 4 KB SRAM, same package but lacks CAPSENSE™ v2 sigma-delta block - uses older delta-sigma architecture. | No hardware SmartSense™; requires manual calibration; lower SNR (<4:1) limits wet-environment reliability. | Select only if legacy CAPSENSE™ design reuse is required and moisture tolerance is not critical. |
| STM32G031K8T6 | Arm® Cortex®-M0+, 64 KB flash, 8 KB SRAM, no integrated CAPSENSE™ - requires external touch controller or software-based sensing. | Lacks dedicated capacitive sensing hardware; higher firmware overhead and lower SNR than hardware-accelerated sigma-delta. | Choose when higher flash/SRAM is needed and touch functionality is secondary or implemented externally. |
Compared with CY8C4024LQI-S403, CY8C4014LQI-S402 offers identical footprint but reduced sensing robustness, while STM32G031K8T6 trades integrated sensing for greater memory and general-purpose flexibility - making CY8C4024LQI-S403 optimal for cost-sensitive, moisture-resilient touch HMI designs.
Availability
CY8C4024LQI-S403 is available at Aetrix Electronics and suitable for consumer remote controls, industrial HMI panels, smart thermostats, and portable medical UIs requiring stable component supply and long-term lifecycle support.
Supply support for CY8C4024LQI-S403 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 R&D and manufacturing infrastructure.
The PSoC™ 4000S product line delivers programmable mixed-signal MCUs optimized for human-interface applications - integrating CAPSENSE™, low-power analog, and flexible digital logic to replace multi-chip touch + control solutions.
FAQ
Does CY8C4024LQI-S403 support USB device functionality?
No. CY8C4024LQI-S403 does not include a USB PHY or dedicated USB controller. It supports USB communication only through SCB-configured UART bridged to external USB-to-UART ICs like CP2102 or FT232RL. Native USB device/host capability is available only in PSoC™ 4100S and later families.
What debug interfaces are supported, and is JTAG available?
CY8C4024LQI-S403 supports Arm® Serial Wire Debug (SWD) only - no JTAG interface. SWD uses SWDIO and SWCLK pins and is fully compatible with MiniProg4, Segger J-Link, and OpenOCD. Debug features can be permanently disabled in firmware to prevent unauthorized access.
Can all 36 GPIOs be used simultaneously for CAPSENSE™ electrodes?
No. While all GPIOs are CAPSENSE™-capable, the hardware limits concurrent electrodes to 32 due to routing constraints in the sigma-delta modulator and IDAC channel allocation. Up to 32 self-capacitance or mutual-capacitance sensors may be scanned in a single configuration.
Is the 48-MHz CPU frequency achievable across the full 1.71–5.5 V supply range?
Yes. The Arm® Cortex®-M0+ core operates at 48 MHz across the entire 1.71–5.5 V range when powered from VDD. This is enabled by the integrated regulator and clock scaling logic - no voltage-dependent frequency derating is required per the datasheet's Device Level Specifications table.
CY8C4024LQI-S403 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-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:
- 34
- 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-S403 FAQ
1.How can I place an order for CY8C4024LQI-S403 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4024LQI-S403 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-S403 reliable?
The price and inventory of CY8C4024LQI-S403 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4024LQI-S403 is usually 5 days.
3.What payment methods are accepted for CY8C4024LQI-S403?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4024LQI-S403 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4024LQI-S403?
CY8C4024LQI-S403 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4024LQI-S403 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-S403?
For technical support, including CY8C4024LQI-S403 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4024LQI-S403 requirements.
6.How does Aetrix verify that CY8C4024LQI-S403 is sourced from the original manufacturer or authorized distributors?
All CY8C4024LQI-S403 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-S403 meets industry standards.
7.What is the process for return or replacement of CY8C4024LQI-S403?
All CY8C4024LQI-S403 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4024LQI-S403, 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-S403 part is unused and in its original packaging.
Return procedure for CY8C4024LQI-S403:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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