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Infineon Technologies CY8C4024LQI-S401
- Part No.:
- CY8C4024LQI-S401
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY8C4024LQI-S401.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 24SQFN
- Quantity:
- Payment:
- Shipping:
Inventory:10,396
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Product details
Overview
CY8C4024LQI-S401 from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller with 24 KB flash, 4 KB SRAM, and integrated CAPSENSE™ capacitive sensing, operating at up to 48 MHz. It features two reconfigurable serial communication blocks (SCBs), five 16-bit TCPWMs, two low-power comparators, and supports 1.71–5.5 V supply for industrial human-interface applications.
For engineers reviewing the CY8C4024LQI-S401 datasheet, CY8C4024LQI-S401 pinout, CY8C4024LQI-S401 application, or CY8C4024LQI-S401 equivalent, key selection criteria include CAPSENSE™ SNR performance (>5:1), Deep Sleep current (2.5 µA), SCB runtime reconfiguration (I²C/SPI/UART), and GPIO flexibility across 36 pins in 40-pin QFN.
Technical Context
The device implements a single-core Arm® Cortex®-M0+ CPU with single-cycle multiply and 32-bit AHB-Lite bus interconnect. Memory subsystem includes 24 KB flash with read accelerator and 4 KB SRAM, plus 8 KB ROM for boot and system functions.
Analog resources include a sigma-delta capacitive sensing engine (CAPSENSE™ v2), two IDACs, two low-power comparators active in Deep Sleep, and programmable CT/SC analog blocks. Digital peripherals comprise five TCPWMs with center-aligned/PWM/kill-signal modes and two SCBs supporting I²C/SPI/UART on-the-fly reconfiguration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time deterministic control with Thumb-2 instruction set and NVIC interrupt handling |
| Flash / SRAM | 24 KB flash + 4 KB SRAM - sufficient for embedded firmware with CAPSENSE™ middleware and dual-protocol communication stacks |
| CAPSENSE™ SNR | >5:1 signal-to-noise ratio - ensures robust touch detection under moisture, noise, or ESD stress without external shielding |
| Deep Sleep Current | 2.5 µA digital system current - supports battery-powered UI devices requiring multi-year operation on coin cells |
| GPIO Count | 36 programmable pins - all support CAPSENSE™, analog, or digital functions with configurable drive strength and slew rate |
| SCB Blocks | 2 run-time reconfigurable serial blocks - each can be independently assigned as I²C master/slave, SPI master/slave, or UART TX/RX |
| TCPWM Blocks | 5 independent 16-bit timer/counter/PWM units - support motor control kill signals, PWM dimming, and quadrature decoding |
Pinout & Package
Package: 40-pin QFN (6 × 6 mm, 0.5 mm pitch), exposed thermal pad, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply input | Accepts 1.71–5.5 V; powers digital core, SRAM, flash, and most peripherals |
| VSS | Ground reference | Common return path for all analog/digital domains; requires low-impedance PCB connection to thermal pad |
| P0[0]–P0[7] | Port 0 general-purpose I/O | Support CAPSENSE™ CSD, analog input/output, SCB/I²C/SPI/UART, and TCPWM capture/compare |
| P1[0]–P1[7] | Port 1 general-purpose I/O | Same functionality as P0; includes dedicated SWD debug pins (SWDIO/SWCLK) on P1[2]/P1[3] |
| XRES | External reset input | Active-low asynchronous reset; internal pull-up; compatible with pushbutton or supervisor IC assertion |
| WCO_IN / WCO_OUT | 32.768 kHz crystal oscillator terminals | Supports precision RTC timing and low-power wake-up; requires external 32 kHz crystal and load capacitors |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning and compensates for environmental drift |
| Programmable analog blocks | Configurable continuous-time and switched-capacitor op-amps enable sensor signal conditioning without external components |
| Reconfigurable SCBs | Runtime switching between I²C/SPI/UART protocols allows dynamic peripheral allocation without firmware reload |
| Deep Sleep with analog active | Capacitive sensing remains operational while CPU and digital logic are powered down - enables ultra-low-power wake-on-touch |
| GPIO drive flexibility | Each pin supports open-drain, strong, resistive pull-up/down, high-Z analog, and slew-rate control - simplifies board-level interface design |
Applications
| Home Appliance Control Panel | Industrial HMI Keypad |
|---|---|
Use Scenario: Touch-enabled oven/microwave front panel with water-resistant buttons and LED feedback. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ scanning, PWM-controlled LED dimming, and UART communication to main controller. Use Value: >5:1 SNR and SmartSense ensure reliable operation under condensation; 2.5 µA Deep Sleep extends battery backup life during standby. | Use Scenario: Dust- and ESD-prone factory floor operator interface with tactile feedback and status indicators. IC Role / Device Role / Timing Role: Real-time touch response processor interfacing via I²C to PLC and driving local LEDs via TCPWM. Use Value: Programmable GPIO drive strength prevents false triggers; reconfigurable SCBs allow field-upgradable communication protocol. |
| Medical Device Touch Interface | Smart Thermostat UI |
Use Scenario: Sterilizable patient monitor touchscreen with glove-compatible operation and low EMI emissions. IC Role / Device Role / Timing Role: Dedicated CAPSENSE™ controller with hardware filtering, isolated from main application processor via UART. Use Value: Sigma-delta sensing rejects RF interference from adjacent wireless modules; ROM-resident bootloader ensures secure firmware updates. | Use Scenario: Battery-powered wall-mounted thermostat with ambient light adaptive display and occupancy sensing. IC Role / Device Role / Timing Role: Low-power system manager handling capacitive proximity wake-up, temperature ADC reading, and Zigbee co-processor UART link. Use Value: 1.71 V minimum supply enables operation down to near-dead battery; TCPWMs generate precise PWM for display backlight control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4024LQI-S412 | Same die, 32 KB flash (vs. 24 KB), identical package and pinout | Higher firmware headroom for complex CAPSENSE™ + BLE stack integration | Select when future firmware expansion or dual-protocol (e.g., I²C + UART) concurrent operation is required |
| STM32G031F8P6 | Arm® Cortex®-M0+, 64 MHz, 64 KB flash, no integrated CAPSENSE™ or programmable analog | Requires external touch controller and signal-conditioning circuitry for capacitive sensing | Select when cost-sensitive BOM and standard peripheral-only requirements outweigh integrated analog flexibility |
Compared with CY8C4024LQI-S401, the S412 offers more flash for feature-rich UI firmware but same power/performance envelope, while the STM32G031 requires external components to match CAPSENSE™ capability - making the CY8C4024LQI-S401 optimal for rapid, compact, low-power touch designs.
Availability
CY8C4024LQI-S401 is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMI keypads, medical device touch interfaces, and smart thermostat UIs requiring stable component supply and long-term lifecycle support.
Supply support for CY8C4024LQI-S401 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, automotive, industrial, and IoT solutions, with global R&D and manufacturing infrastructure.
CY8C4024LQI-S401 belongs to the PSoC™ 4000S product line, designed specifically for cost-optimized, low-power embedded systems requiring integrated capacitive sensing, flexible digital peripherals, and rapid hardware-software co-design.
FAQ
What development tools are supported for CY8C4024LQI-S401?
Infineon officially supports ModusToolbox™ software (cross-platform, Eclipse-based) and PSoC™ Creator (Windows-only IDE). Both provide schematic-driven configuration, CAPSENSE™ tuning tools, TCPWM and SCB configurators, and pre-verified peripheral drivers. MiniProg4 is the recommended programmer/debugger, and CY8CKIT-145-40XX serves as the reference evaluation kit.
Does CY8C4024LQI-S401 support hardware encryption or secure boot?
CY8C4024LQI-S401 does not include dedicated cryptographic accelerators or hardware secure boot. It provides flash protection bits and debug disable capability to prevent unauthorized access, but secure firmware validation must be implemented in software using ROM-resident bootloader APIs and external trusted execution environments if required.
Can all 36 GPIOs be used simultaneously for CAPSENSE™ electrodes?
No - while all 36 GPIOs are CAPSENSE™-capable, practical electrode count is limited by mutual capacitance coupling and scan time. The datasheet specifies up to 24 self-capacitance or 12 mutual-capacitance electrodes per device, depending on resolution and SNR targets. Layout and firmware tuning determine actual usable count in a given design.
Is the WCO (32.768 kHz crystal oscillator) mandatory for operation?
No - the WCO is optional. The device operates using its ±2% internal main oscillator (IMO) for full-speed operation. The WCO is required only for precision RTC functions or low-power wake-up events where sub-second accuracy or ultra-low Deep Sleep current (<1 µA) is needed; otherwise, the IMO suffices for general timing and SCB baud generation.
CY8C4024LQI-S401 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-S401 FAQ
1.How can I place an order for CY8C4024LQI-S401 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4024LQI-S401 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-S401 reliable?
The price and inventory of CY8C4024LQI-S401 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4024LQI-S401 is usually 5 days.
3.What payment methods are accepted for CY8C4024LQI-S401?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4024LQI-S401 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4024LQI-S401?
CY8C4024LQI-S401 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4024LQI-S401 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-S401?
For technical support, including CY8C4024LQI-S401 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4024LQI-S401 requirements.
6.How does Aetrix verify that CY8C4024LQI-S401 is sourced from the original manufacturer or authorized distributors?
All CY8C4024LQI-S401 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-S401 meets industry standards.
7.What is the process for return or replacement of CY8C4024LQI-S401?
All CY8C4024LQI-S401 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4024LQI-S401, 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-S401 part is unused and in its original packaging.
Return procedure for CY8C4024LQI-S401:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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