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Infineon Technologies CY8C4724FNI-S402T
- Part No.:
- CY8C4724FNI-S402T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 25-XFBGA, WLCSP
- Datasheet:
-
CY8C4724FNI-S402T.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 25WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,141
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Product details
Overview
CY8C4724FNI-S402T from Infineon Technologies (formerly Cypress Semiconductor) is a programmable 32-bit Arm® Cortex®-M0+ microcontroller in the PSoC 4700S family, integrating MagSense™ inductive sensing and CapSense® capacitive sensing on a single die. It features 48 MHz CPU operation, 32 KB flash, 4 KB SRAM, up to 16 inductive sensors, and dual reconfigurable SCBs supporting I²C/SPI/UART. It targets metal proximity detection in industrial HMI and touchless control systems.
For engineers reviewing the CY8C4724FNI-S402T datasheet, CY8C4724FNI-S402T pinout, CY8C4724FNI-S402T application, or CY8C4724FNI-S402T equivalent, key selection criteria include its integrated MagSense capability for sub-190 nm metal deflection detection, Deep Sleep current of 2.5 µA with operational analog, and SmartIO Boolean logic support for sensor preprocessing without CPU intervention.
Technical Context
The device implements a single-layer AHB-Lite interconnect linking the Cortex-M0+ core, flash accelerator, and SRAM controller, enabling deterministic peripheral access. Its clock system combines a 24–48 MHz IMO (±2% trimmed), 32 kHz WCO, and 40 kHz ILO to support simultaneous high-speed digital operation and low-power wake-up timing.
Analog subsystems include two low-power comparators active in Deep Sleep, one 10-bit single-slope ADC, and two IDACs referenced to ±5% internal voltage. Digital resources comprise five 16-bit TCPWM blocks with comparator-triggered kill signals and two SmartIO ports for combinational logic on GPIOs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, 48 MHz max - enables real-time sensor fusion and firmware-driven calibration without external co-processor. |
| Flash / SRAM | 32 KB flash with Read Accelerator / 4 KB SRAM - supports full CapSense+MagSense firmware plus application logic in single-chip deployment. |
| Inductive Sensing | Up to 16 MagSense channels - detects metal objects with <190 nm deflection resolution, eliminating mechanical switches in sealed enclosures. |
| Capacitive Sensing | CapSense Sigma-Delta (CSD) with >5:1 SNR - delivers water-tolerant touch interfaces on plastic/glass surfaces without overlay compensation. |
| Power Modes | Deep Sleep at 2.5 µA with analog active - sustains continuous metal proximity monitoring while preserving battery life in portable devices. |
| Communication | 2 × SCBs, runtime-reconfigurable as I²C/SPI/UART - allows flexible host interface selection without PCB redesign or firmware recompile. |
| GPIO | 36 programmable pins, any configurable as CapSense/MagSense/analog/digital - simplifies layout by unifying sensor, control, and communication I/O on shared pins. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | Accepts 1.71–5.5 V; powers all digital logic, analog blocks, and GPIO drivers - enables direct connection to Li-ion or USB 5 V rails. |
| VSS | Digital ground | Primary return path for CPU, flash, SRAM, and digital peripherals - must be low-impedance and separated from analog ground at single-point star connection. |
| XRES | External reset input | Active-low asynchronous reset with internal pull-up - allows system-level fault recovery without dedicated reset IC. |
| SWDCLK / SWDIO | Debug interface | Two-wire Serial Wire Debug - provides non-intrusive firmware update and real-time variable inspection during MagSense calibration. |
| P0[0]–P0[7] | Programmable GPIO | Support MagSense coil drive, CapSense CSD electrodes, or analog comparator inputs - enables mixed-mode sensor routing without external multiplexers. |
Key Features
| Feature | Design Value |
|---|---|
| MagSense software auto-calibration | Compensates for PCB trace inductance variation and coil manufacturing tolerances - eliminates per-unit factory tuning in high-volume production. |
| SmartSense™ hardware tuning | Automatically adjusts CapSense scan parameters (IDAC, resolution, averaging) based on electrode capacitance - reduces design iteration time for curved or thick-coverlens interfaces. |
| SmartIO Boolean logic | Performs AND/OR/XOR on GPIO inputs/outputs in hardware - offloads debounce, edge detection, or sensor fusion logic from CPU, reducing latency and power. |
| TCPWM comparator kill signal | Hardware-triggered PWM shutdown within 100 ns - ensures safe motor or solenoid de-energization during overcurrent or thermal fault events. |
Applications
| Industrial HMI Panels | Medical Device Controls |
|---|---|
Use Scenario: Touchless button activation on sealed stainless-steel control panels in cleanroom environments. IC Role / Device Role / Timing Role: MagSense detects actuation of metal pushbuttons behind 2 mm stainless cover; CapSense handles adjacent non-metallic status indicators. Use Value: Eliminates membrane switch wear-out and ingress paths; achieves IP69K rating with no moving parts or gaskets. | Use Scenario: Glove-compatible proximity sensing on infusion pump housings to prevent accidental button presses during handling. IC Role / Device Role / Timing Role: MagSense monitors finger approach to metal bezel; Deep Sleep mode maintains 2.5 µA background sensing until wake event. Use Value: Reduces false triggers from fluid splashes or glove friction while sustaining >1-year battery life on coin cell. |
| Appliance Control Knobs | Automotive Cabin Sensors |
Use Scenario: Rotary encoder replacement using inductive sensing of rotating metal gear behind plastic fascia. IC Role / Device Role / Timing Role: MagSense measures angular position via multi-coil array; SmartIO performs Gray code conversion in hardware. Use Value: Enables waterproof, dustproof, and ESD-robust rotary control without optical slits or potentiometers. | Use Scenario: Occupancy detection via metal object (belt buckle, keys) movement near center console storage compartments. IC Role / Device Role / Timing Role: Low-power MagSense continuously scans for ferrous object motion; WCO-clocked timer triggers periodic wake-up every 500 ms. Use Value: Detects occupant presence without camera or radar; meets automotive ASIL-B functional safety requirements via hardware reset isolation. |
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 |
|---|---|---|---|
| CY8C4724LQI-S402T | Same core and sensing IP, but 24-pin QFN package (4×4 mm) with only 20 GPIOs and no LCD drive capability. | Suitable for space-constrained designs where inductive sensing is primary and display output is unnecessary. | Select when board area is critical and LCD segment drive is not required; verify MagSense coil layout fits smaller pad pitch. |
| STM32G071KB | No integrated MagSense or CapSense; requires external LDC1612 + FDC2214 for equivalent metal/non-metal sensing. | Demands additional BOM cost, PCB area, and firmware integration effort for dual-sensing functionality. | Choose only if existing STM32 toolchain familiarity outweighs added component count and calibration complexity. |
Compared with CY8C4724LQI-S402T, the CY8C4724FNI-S402T offers 36 GPIOs and LCD drive for HMI consolidation; versus STM32G071KB, it delivers turnkey inductive/capacitive sensing with zero external components and unified firmware calibration.
Availability
CY8C4724FNI-S402T is available at Aetrix Electronics and suitable for industrial HMI panels, medical device controls, appliance control knobs, and automotive cabin sensors requiring stable component supply across multi-year production cycles.
Supply support for CY8C4724FNI-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 is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, sensing, and microcontroller solutions for industrial, automotive, and IoT applications.
This device belongs to the PSoC 4700S product line, engineered specifically to unify inductive and capacitive sensing in a single low-power MCU for touchless human-machine interfaces in harsh or sealed environments.
FAQ
What development tools support CY8C4724FNI-S402T firmware and sensor configuration?
PSoC Creator IDE (free Windows-based tool) provides schematic-driven design entry, automatic analog/digital routing, and pre-verified MagSense/CapSense components. It generates production-ready C code and supports debugging via SWD interface. Third-party Arm GCC toolchains are also compatible after project export.
Does CY8C4724FNI-S402T require external crystals for MagSense operation?
No external crystal is required for basic MagSense operation. The internal IMO (24–48 MHz) provides excitation frequency; the 32 kHz WCO is optional and used only for high-precision timing in Deep Sleep wake-up intervals or watchdog calibration - not for sensing itself.
How is electromagnetic interference mitigated in MagSense implementations using this MCU?
MagSense uses synchronous demodulation locked to the IMO, rejecting out-of-band noise. Layout guidelines mandate separation of MagSense coils from high-speed digital traces, use of ground guard rings, and ferrite bead filtering on VDD - all validated in AN219207 and supported by PSoC Creator's MagSense component placement rules.
Can CapSense and MagSense operate simultaneously on the same GPIO pins?
No - CapSense and MagSense share underlying analog resources and cannot run concurrently on overlapping pins. Time-division multiplexing is required: MagSense operates during dedicated measurement windows while CapSense uses separate scan periods. PSoC Creator's resource scheduler enforces this constraint automatically during build.
CY8C4724FNI-S402T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 25-XFBGA, WLCSP
- Series:
- PSOC™ 4 CY8C4700S
- 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 16x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4724FNI-S402T FAQ
1.How can I place an order for CY8C4724FNI-S402T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4724FNI-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 CY8C4724FNI-S402T reliable?
The price and inventory of CY8C4724FNI-S402T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4724FNI-S402T is usually 5 days.
3.What payment methods are accepted for CY8C4724FNI-S402T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4724FNI-S402T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4724FNI-S402T?
CY8C4724FNI-S402T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4724FNI-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 CY8C4724FNI-S402T?
For technical support, including CY8C4724FNI-S402T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4724FNI-S402T requirements.
6.How does Aetrix verify that CY8C4724FNI-S402T is sourced from the original manufacturer or authorized distributors?
All CY8C4724FNI-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 CY8C4724FNI-S402T meets industry standards.
7.What is the process for return or replacement of CY8C4724FNI-S402T?
All CY8C4724FNI-S402T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4724FNI-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 CY8C4724FNI-S402T part is unused and in its original packaging.
Return procedure for CY8C4724FNI-S402T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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