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Infineon Technologies CY8C4024LQI-S401T
- Part No.:
- CY8C4024LQI-S401T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY8C4024LQI-S401T.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 24SQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,790
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Product details
Overview
CY8C4024LQI-S401T from Infineon is a PSoC™ 4000S programmable system-on-chip MCU based on the Arm® Cortex®-M0+ CPU, operating at up to 48 MHz with 32 KB flash and 4 KB SRAM. It integrates CAPSENSE™ capacitive touch sensing, two SCBs supporting I²C/SPI/UART, five TCPWM blocks, and programmable analog (IDACs, comparators) and digital logic blocks. It targets embedded human-interface and sensor-fusion applications requiring low-power operation down to 2.5 µA in Deep Sleep mode.
For engineers reviewing the CY8C4024LQI-S401T datasheet, CY8C4024LQI-S401T pinout, CY8C4024LQI-S401T application, or CY8C4024LQI-S401T equivalent, key selection criteria include its 48-MHz Cortex-M0+ core, integrated CAPSENSE™ v2 with SmartSense auto-tuning, dual SCB flexibility, 36 GPIOs with configurable drive modes, and support for ModusToolbox™ and PSoC™ Creator development environments.
Technical Context
The device implements a single-layer AHB-Lite interconnect between the Cortex-M0+ CPU, memory subsystem (32 KB flash + 4 KB SRAM), and peripherals including two serial communication blocks (SCBs), five timer/counter/PWM (TCPWM) units, and CAPSENSE™ sigma-delta sensing engine. Its analog subsystem includes two current DACs (IDACs) and two low-power comparators operational in Deep Sleep mode.
System-level timing relies on multiple clock sources: ±2% internal main oscillator (IMO), 32 kHz watch crystal oscillator (WCO), and 32 kHz internal low-power oscillator (ILO). Debug is supported via Arm® Serial Wire Debug (SWD) interface with full on-chip debug capability and optional firmware-disable security.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time deterministic control with single-cycle multiply for motor or sensor algorithms. |
| Memory | 32 KB flash (with read accelerator), 4 KB SRAM - supports moderate firmware size and runtime data buffering without external memory. |
| Capacitive Sensing | CAPSENSE™ v2 with sigma-delta architecture, >5:1 SNR, water-tolerant - delivers robust touch button/slider performance in consumer and industrial HMI. |
| Serial Interfaces | 2 × SCBs, each reconfigurable as I²C, SPI, or UART - allows concurrent use of different protocols (e.g., I²C sensor + UART debug) without dedicated fixed-function hardware. |
| PWM & Timing | 5 × 16-bit TCPWM blocks with center-aligned, edge, and pseudo-random modes - supports precise motor control, LED dimming, and signal generation with comparator-triggered kill signals. |
| Power Modes | Deep Sleep mode with 2.5 µA system current and active analog - enables battery-powered devices with multi-year operation and wake-on-touch capability. |
| GPIO | 36 programmable pins with configurable drive strength, slew rate, and CAPSENSE™/analog/digital assignment - simplifies PCB routing and eliminates external level shifters or touch controllers. |
Pinout & Package
Package: 40-pin QFN (7 mm × 7 mm, 0.5 mm pitch), exposed thermal pad. Pin mapping validated per Infineon datasheet 002-00123 Rev. *Q, Section 4 "Pinouts".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | 1.71–5.5 V input; powers all digital logic, analog blocks, and GPIOs - supports direct connection to common rail voltages. |
| GND | Ground reference | Common return path for analog and digital domains; requires low-impedance connection to minimize noise coupling into CAPSENSE™. |
| SWDCLK / SWDIO | Debug interface | Arm® Serial Wire Debug pins - enable programming and full on-chip debugging using standard tools (MiniProg4, J-Link) without additional hardware. |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO | 36 total pins assignable to CAPSENSE™, analog input/output, digital logic, or LCD segment drive - eliminates need for discrete touch ICs or glue logic. |
| XRES | External reset | Active-low asynchronous reset input - allows system-level power-on or fault recovery independent of internal POR circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration that dynamically adjusts IDACs and thresholds - reduces firmware development time and ensures consistent touch response across temperature/humidity. |
| Programmable analog blocks | Two current DACs (IDACs) and two low-power comparators usable on any GPIO - enables flexible sensor biasing, threshold detection, and analog front-end design without external components. |
| Reconfigurable SCBs | Two serial communication blocks independently configurable as I²C, SPI, or UART at runtime - permits dynamic protocol switching (e.g., SPI during boot, I²C during operation) without pin remapping or firmware reload. |
| Deep Sleep with analog active | Digital system current ≤2.5 µA while CAPSENSE™ and comparators remain functional - enables always-on touch wake-up with sub-millisecond latency and minimal battery drain. |
| Integrated TCPWM kill signals | Comparator outputs can directly trigger TCPWM shutdown - provides hardware-level safety response for motor control or power conversion, bypassing CPU latency. |
Applications
| Home Appliance Control Panel | Industrial HMI Touch Interface |
|---|---|
Use Scenario: Touch-enabled oven, washer, or HVAC control panel operating in humid, high-noise environments. IC Role / Device Role / Timing Role: Primary MCU executing UI logic and CAPSENSE™ processing; TCPWM drives display backlight PWM; SCBs communicate with temperature sensors and display drivers. Use Value: Water-tolerant CAPSENSE™ v2 ensures reliable operation under condensation; Deep Sleep extends battery life in cordless remote variants. | Use Scenario: Panel-mounted operator interface for PLC-connected machinery with ESD exposure and wide temperature range. IC Role / Device Role / Timing Role: Standalone HMI controller managing touch input, LED status indicators, and RS-485 (via SCB UART) communication to main controller. Use Value: Programmable GPIO drive strength mitigates ESD-induced glitches; 1.71–5.5 V operation accommodates unregulated 3.3 V or 5 V industrial rails. |
| Smart Lighting Dimmer Module | Portable Medical Sensor Hub |
Use Scenario: DALI- or 0–10 V-compatible LED driver with touch slider and ambient light sensing. IC Role / Device Role / Timing Role: MCU running dimming algorithm; TCPWM generates precise LED current control; IDACs bias photodiode amplifier; SCB handles DALI bus communication. Use Value: Integrated IDACs eliminate external bias resistors; CAPSENSE™ slider replaces mechanical potentiometer, improving reliability and IP rating. | Use Scenario: Battery-powered wearable device aggregating ECG, temperature, and motion data with touch-activated UI. IC Role / Device Role / Timing Role: Central sensor fusion MCU; CAPSENSE™ enables gesture-based navigation; low-power comparators monitor battery voltage; SCB interfaces with BLE SoC. Use Value: 2.5 µA Deep Sleep extends runtime between charges; single-chip integration reduces BOM count and board area vs. discrete MCU + touch controller. |
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-S402 | Same die, identical specs, but shipped in tape-and-reel (S402) vs. tray (S401T) packaging - no electrical or functional difference. | Identical use cases; S402 preferred for automated SMT assembly, S401T for prototyping or low-volume hand-soldering. | Select S401T for evaluation kits and small-batch builds where tray handling is preferred. |
| CY8C4014LQI-S401 | Same package and footprint, but reduced memory: 16 KB flash, 2 KB SRAM, and only 24 GPIOs - lacks one SCB and one TCPWM block. | Suitable for simpler touch-only applications without concurrent serial comms or complex PWM timing; not recommended for sensor fusion or multi-peripheral designs. | Choose only if firmware size and peripheral count are confirmed within reduced limits; verify CAPSENSE™ channel count sufficiency. |
Compared with CY8C4024LQI-S402, the S401T offers identical functionality in tray packaging for manual or semi-automated assembly; versus CY8C4014LQI-S401, it delivers 2× flash/SRAM, +12 GPIOs, and full peripheral complement - critical for scalable HMI or mixed-signal edge-node designs.
Availability
CY8C4024LQI-S401T is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMI interfaces, smart lighting dimmers, and portable medical sensor hubs requiring stable component supply, long-term lifecycle support, and qualified automotive-grade traceability.
Supply support for CY8C4024LQI-S401T 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 AG is a German semiconductor manufacturer specializing in power management, sensor, and microcontroller solutions for industrial, automotive, and IoT markets.
The PSoC™ 4000S product line delivers programmable mixed-signal MCUs optimized for cost-sensitive, low-power human-machine interface and sensor-edge applications - combining Arm® Cortex®-M0+ execution with configurable analog/digital fabric and best-in-class CAPSENSE™.
FAQ
What development tools are officially supported for CY8C4024LQI-S401T?
Infineon officially supports both ModusToolbox™ (cross-platform, IDE-neutral) and PSoC™ Creator (Windows-only, schematic-driven). ModusToolbox™ provides peripheral configurators, BSPs, and PDL libraries; PSoC™ Creator offers drag-and-drop hardware design with pre-verified components. Both integrate with MiniProg4 for programming and debugging via SWD.
Does CY8C4024LQI-S401T support hardware encryption or secure boot?
No. The CY8C4024LQI-S401T does not include hardware cryptographic accelerators, secure boot ROM, or tamper-detection features. It supports flash protection bits and optional debug disable, but lacks dedicated security peripherals found in PSoC™ 4100S or PSoC™ 6 families. Secure firmware updates require external co-processors or software-based implementations.
Can CAPSENSE™ operate while the CPU is in Deep Sleep mode?
Yes. CAPSENSE™ v2 hardware operates autonomously in Deep Sleep mode, scanning buttons/sliders using the ILO or WCO clock source. The CPU remains powered off while CAPSENSE™ detects touches and triggers a wakeup interrupt upon threshold crossing - enabling ultra-low-power wake-on-touch functionality with typical current draw of 2.5 µA.
Is the 40-pin QFN package RoHS-compliant and halogen-free?
Yes. The CY8C4024LQI-S401T 40-pin QFN package meets RoHS Directive 2011/65/EU and is certified halogen-free per IEC 61249-2-21. Lead finish is matte tin, and the package uses green molding compound. Full compliance documentation is available in Infineon's material declarations portal under orderable part number CY8C4024LQI-S401T.
CY8C4024LQI-S401T 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:
- 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-S401T FAQ
1.How can I place an order for CY8C4024LQI-S401T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4024LQI-S401T 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-S401T reliable?
The price and inventory of CY8C4024LQI-S401T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4024LQI-S401T is usually 5 days.
3.What payment methods are accepted for CY8C4024LQI-S401T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4024LQI-S401T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4024LQI-S401T?
CY8C4024LQI-S401T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4024LQI-S401T 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-S401T?
For technical support, including CY8C4024LQI-S401T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4024LQI-S401T requirements.
6.How does Aetrix verify that CY8C4024LQI-S401T is sourced from the original manufacturer or authorized distributors?
All CY8C4024LQI-S401T 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-S401T meets industry standards.
7.What is the process for return or replacement of CY8C4024LQI-S401T?
All CY8C4024LQI-S401T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4024LQI-S401T, 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-S401T part is unused and in its original packaging.
Return procedure for CY8C4024LQI-S401T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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