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Infineon Technologies CY8C4024FNI-S402T
- Part No.:
- CY8C4024FNI-S402T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 25-XFBGA, WLCSP
- Datasheet:
-
CY8C4024FNI-S402T.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 25WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
CY8C4024FNI-S402T 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 requiring robust touch control and low-power operation.
For engineers reviewing the CY8C4024FNI-S402T datasheet, CY8C4024FNI-S402T pinout, CY8C4024FNI-S402T application, or CY8C4024FNI-S402T equivalent, key selection criteria include CAPSENSE™ SNR (>5:1), SmartSense auto-tuning capability, SCB runtime reconfiguration (I²C/SPI/UART), TCPWM kill-signal triggering for motor safety, and WLCSP-25 package compatibility with high-density PCB layouts.
Technical Context
The CY8C4024FNI-S402T implements a single-core Arm® Cortex®-M0+ CPU running at up to 48 MHz with single-cycle multiply and 32 KB flash read accelerator. Its analog subsystem includes a sigma-delta capacitive sensing engine (CAPSENSE™ v2) with hardware-accelerated water-tolerant detection and two IDACs supporting any GPIO for sensing or analog output.
Digital resources comprise five programmable TCPWM blocks supporting center-aligned PWM, comparator-triggered fault kill signals, and two SCBs that dynamically switch between I²C, SPI, and UART protocols without firmware reload - enabling flexible peripheral routing in resource-constrained embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables deterministic real-time control with <100 ns interrupt latency |
| Flash / SRAM | 24 KB flash / 4 KB SRAM - sufficient for CAPSENSE™ firmware + BLE stack coexistence in compact edge nodes |
| CAPSENSE™ Engine | Sigma-delta architecture with >5:1 SNR - delivers reliable touch detection under wet conditions and EMI noise |
| Low-Power Mode | Deep Sleep at 2.5 µA - sustains active analog sensing while minimizing battery drain in portable HMI |
| SCB Count / Flexibility | 2 × reconfigurable SCBs - each supports I²C/SPI/UART on-the-fly, reducing BOM count vs. fixed-function peripherals |
| TCPWM Blocks | 5 × 16-bit timer/counter/PWM - support center-aligned PWM and hardware kill-signal generation for motor drive safety |
| GPIO / Packaging | 25-ball WLCSP - 0.4 mm pitch, 2.57 × 2.57 mm footprint ideal for space-constrained wearables and IoT sensors |
Pinout & Package
Package: 25-ball Wafer-Level Chip Scale Package (WLCSP), 0.4 mm pitch, 2.57 mm × 2.57 mm body size, bottom-side solder balls with standard JEDEC MO-220VBED layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | 1.71–5.5 V input; powers digital logic, analog blocks, and GPIO drivers simultaneously |
| VSS | Ground reference | Common return path for all analog/digital domains; requires dedicated low-impedance plane |
| XRES | External reset input | Active-low asynchronous reset; debounced externally to prevent spurious resets during power ramp |
| SWDIO / SWCLK | ARM Serial Wire Debug interface | Two-pin debug port enabling full firmware load, breakpoint, and register inspection without JTAG overhead |
| P0[0]–P0[7] | Programmable GPIO bank | Support CAPSENSE™, analog input/output, or digital logic; configurable slew rate and drive strength per pin |
| WCO_IN / WCO_OUT | 32.768 kHz crystal oscillator terminals | Enable precise RTC timing and low-power wake-up intervals independent of main clock domain |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual threshold tuning across temperature/humidity variations |
| Reconfigurable SCBs | Runtime protocol switching between I²C, SPI, and UART allows single hardware design to support multiple sensor types |
| Deep Sleep with Active Analog | 2.5 µA system current while CAPSENSE™ continuously monitors touch events - extends coin-cell battery life to >1 year |
| Comparator-Based Kill Signal | Dedicated hardware path from comparator output to TCPWM fault input enables <100 ns response to overcurrent/overvoltage faults |
| Programmable I/O Matrix | Flexible signal routing between peripherals and GPIOs avoids fixed pin constraints - simplifies PCB layout and reuse |
Applications
| Smart Home Touch Panel | Wearable Fitness Tracker |
|---|---|
Use Scenario: Wall-mounted climate control panel with slider, button, and proximity wake-up in humid indoor environments. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, managing display backlight via PWM, and communicating with HVAC controller via I²C. Use Value: Sigma-delta CAPSENSE™ achieves >5:1 SNR and water tolerance - maintains responsive touch even after condensation forms on glass surface. | Use Scenario: Compact wrist-worn device monitoring heart rate, motion, and user gestures via capacitive touch zones. IC Role / Device Role / Timing Role: System-on-chip handling sensor fusion, gesture recognition, and Bluetooth LE connectivity using SCB in UART mode. Use Value: Deep Sleep at 2.5 µA enables multi-day operation on 40 mAh coin cell while maintaining continuous touch readiness. |
| Industrial HMI Keypad | Medical Patient Monitor Interface |
Use Scenario: Sealed front-panel keypad for PLC operator interface exposed to cleaning agents and ESD events. IC Role / Device Role / Timing Role: Dedicated touch controller interfacing with host MCU via SPI; handles debounce, proximity, and multi-touch reporting. Use Value: Programmable IDACs and comparator-based noise rejection suppress false triggers from chemical residue or glove contact. | Use Scenario: Bedside monitor with touch-sensitive alarm silencer and parameter adjustment sliders in clinical settings. IC Role / Device Role / Timing Role: Safety-certified subsystem managing CAPSENSE™ inputs, driving LCD segments directly, and generating audible alerts via PWM. Use Value: Hardware kill-signal path from comparator to TCPWM ensures immediate backlight dimming and audio mute upon critical alarm condition. |
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-S402T | Same core, 32-pin QFN package (5 × 5 mm), 36 GPIOs - no WLCSP footprint | Better thermal dissipation and hand-solderability; unsuitable for ultra-compact wearables | Select when board space permits larger package and higher I/O count is needed |
| STM32G031F8P6 | Arm® Cortex®-M0+, 64 KB flash, no integrated CAPSENSE™ - requires external touch controller | Lacks hardware-accelerated sigma-delta sensing; adds BOM cost and layout complexity for touch functionality | Select only if touch is not required or discrete touch IC already in design |
Compared with CY8C4024LQI-S402T and STM32G031F8P6, the CY8C4024FNI-S402T uniquely integrates CAPSENSE™ v2 with SmartSense and WLCSP packaging - delivering lowest system-level cost and smallest form factor for touch-centric edge devices.
Availability
CY8C4024FNI-S402T is available at Aetrix Electronics and suitable for smart home interfaces, wearable health monitors, industrial HMIs, and medical patient interfaces requiring stable component supply and long-term lifecycle assurance.
Supply support for CY8C4024FNI-S402T 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 MCUs, and secure embedded solutions, with global R&D and manufacturing infrastructure.
The PSoC™ 4000S product line targets cost-sensitive, space-constrained embedded systems requiring integrated analog sensing, programmable logic, and ultra-low-power operation - especially in human-interface and IoT endpoint applications.
FAQ
Does CY8C4024FNI-S402T support USB connectivity?
No. The CY8C4024FNI-S402T does not include a USB PHY or USB controller. It provides two reconfigurable SCBs supporting I²C, SPI, and UART only. For USB host or device functionality, an external bridge IC or migration to PSoC™ 4100S/4200S series is required.
What development tools are officially supported for this device?
Infineon officially supports ModusToolbox™ software (cross-platform, Eclipse-based) and PSoC™ Creator (Windows-only IDE). Both provide CAPSENSE™ configuration tools, TCPWM and SCB drivers, and code examples. MiniProg4 is the recommended programmer/debugger for production programming and field updates.
Can the WLCSP package be hand-soldered reliably?
No. The 25-ball WLCSP (0.4 mm pitch, 0.25 mm ball diameter) requires precision reflow profiling and stencil-printed solder paste. Hand-soldering is not recommended due to risk of bridging, voiding, and insufficient wetting. Use certified contract manufacturers with Class 3 IPC-A-610 capability for assembly.
Is CAPSENSE™ certification included out-of-the-box?
Yes. CAPSENSE™ v2 firmware with SmartSense auto-tuning is pre-integrated into the PDL and ModusToolbox™ middleware. No additional license or royalty fee is required. Certified performance data (IEC 61000-4-6 immunity, water tolerance) is documented in Infineon's CAPSENSE™ Design Guide (AN85951).
CY8C4024FNI-S402T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 25-XFBGA, WLCSP
- 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:
- 21
- 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:
CY8C4024FNI-S402T FAQ
1.How can I place an order for CY8C4024FNI-S402T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4024FNI-S402T 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 CY8C4024FNI-S402T reliable?
The price and inventory of CY8C4024FNI-S402T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4024FNI-S402T is usually 5 days.
3.What payment methods are accepted for CY8C4024FNI-S402T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4024FNI-S402T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4024FNI-S402T?
CY8C4024FNI-S402T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4024FNI-S402T 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 CY8C4024FNI-S402T?
For technical support, including CY8C4024FNI-S402T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4024FNI-S402T requirements.
6.How does Aetrix verify that CY8C4024FNI-S402T is sourced from the original manufacturer or authorized distributors?
All CY8C4024FNI-S402T 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 CY8C4024FNI-S402T meets industry standards.
7.What is the process for return or replacement of CY8C4024FNI-S402T?
All CY8C4024FNI-S402T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4024FNI-S402T, 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 CY8C4024FNI-S402T part is unused and in its original packaging.
Return procedure for CY8C4024FNI-S402T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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