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Infineon Technologies CY8C4725FNI-S402T
- Part No.:
- CY8C4725FNI-S402T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 25-XFBGA, WLCSP
- Datasheet:
-
CY8C4725FNI-S402T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 25WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,168
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Product details
Overview
CY8C4725FNI-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, 32 KB flash, 4 KB SRAM, up to 16 inductive sensors, and operates from 1.71–5.5 V. It targets metal proximity detection in industrial HMI and touchless control systems.
For engineers reviewing the CY8C4725FNI-S402T datasheet, CY8C4725FNI-S402T pinout, CY8C4725FNI-S402T application, or CY8C4725FNI-S402T equivalent, key selection criteria include integrated MagSense/ CapSense co-sensing capability, Deep Sleep current of 2.5 µA with operational analog, TCPWM kill-signal triggering for motor safety, and reconfigurable SCB blocks supporting I²C/SPI/UART at runtime.
Technical Context
The device implements a dual-sensing architecture where MagSense uses self-resonant LC tank excitation and phase-shift demodulation to detect sub-190 nm metal deflection, while CapSense Sigma-Delta (CSD) achieves >5:1 SNR with water tolerance. Both subsystems share the same GPIO matrix and are calibrated via firmware components (MagSense Auto-Cal, SmartSense™).
Its clock system combines a 24–48 MHz IMO (±2% trimmed), 32 kHz WCO for precision timing, and 40 kHz ILO for Deep Sleep operation. The 5× TCPWM blocks support center-aligned PWM with comparator-triggered kill signals-enabling hardware-level fault response in motor drive applications without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, 48 MHz max - enables real-time sensor fusion and deterministic interrupt latency ≤12 cycles |
| Flash / SRAM | 32 KB flash with Read Accelerator / 4 KB zero-wait-state SRAM - supports firmware updates and local sensor data buffering |
| Sensing Channels | Up to 16 MagSense inductive + unlimited CapSense capacitive channels - allows multi-zone metal/non-metal detection on shared pins |
| Power Modes | Deep Sleep: 2.5 µA digital + active analog - sustains continuous metal proximity monitoring without wake-up latency |
| Communication | 2× SCBs configurable as I²C/SPI/UART - enables concurrent host interface and sensor hub communication |
| PWM Capability | 5× 16-bit TCPWM with comparator-based kill input - provides hardware-enforced shutdown for motor gate drivers |
| GPIO Flexibility | 36 programmable pins with configurable drive strength, slew rate, and analog/digital/metal-sense roles - eliminates external signal conditioning for most HMI designs |
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 | Main power supply input | Accepts 1.71–5.5 V; powers digital core, analog blocks, and I/O; internal LDO regulates analog reference |
| VSS | Digital ground | Reference for digital logic and CPU; separate analog ground connection required for optimal MagSense SNR |
| XRES | Active-low external reset | Pulled high internally; assertion forces full system reset and clears all registers including reset cause flags |
| SWDIO / SWCLK | Serial Wire Debug interface | Two-pin debug port supporting programming, real-time trace, and breakpoints during active or Deep Sleep wake-up events |
| P0[0]–P0[7] | Programmable GPIO bank 0 | Supports MagSense coil drive, CapSense CSD electrode, analog comparator input, or digital PWM output - role assigned per-pin in PSoC Creator |
| SCB0_SDA / SCB0_SCL | I²C interface pins | Configurable as alternate function for SCB0; default I²C mode enables host MCU or sensor hub connectivity |
Key Features
| Feature | Design Value |
|---|---|
| Integrated MagSense + CapSense | Single-chip metal/non-metal object detection eliminates need for separate inductive and capacitive ICs and reduces BOM count by ≥2 |
| SmartSense™ Auto-Tuning | Hardware-accelerated calibration adjusts CapSense baseline and threshold dynamically - removes manual tuning across temperature/humidity variations |
| Deep Sleep with Active Analog | Analog comparators and MagSense front-end remain powered at 2.5 µA system current - enables always-on proximity wake-up without CPU overhead |
| Reconfigurable SCBs | Each Serial Communication Block can be switched between I²C/SPI/UART in firmware - simplifies protocol migration and field upgrade paths |
| TCPWM Kill Signal Input | Dedicated hardware path from comparator output to PWM fault latch - ensures <100 ns response time for overcurrent/overtemperature shutdown |
Applications
| Industrial HMI Panels | Medical Device Controls |
|---|---|
Use Scenario: Touchless button and slider interfaces on sealed control panels exposed to cleaning agents or glove use. IC Role / Device Role / Timing Role: Dual-mode sensor controller performing simultaneous MagSense (metal stylus) and CapSense (finger/glove) detection with <15 ms response latency. Use Value: Eliminates mechanical switches and overlay wear; maintains functionality under liquid contamination due to CapSense water tolerance and MagSense immunity to moisture. | Use Scenario: Proximity-activated instrument sterilization cycle start/stop on surgical equipment housings. IC Role / Device Role / Timing Role: Low-power proximity monitor using MagSense to detect metal tools placed near panel, triggering Deep Sleep exit and system boot. Use Value: Reduces standby power to 2.5 µA while retaining sub-200 nm metal detection resolution - extends battery life in portable medical devices. |
| Automotive Cabin Sensors | Appliance User Interfaces |
Use Scenario: Glove-compatible climate control sliders and metal-stylus-enabled infotainment toggles in vehicle cabins. IC Role / Device Role / Timing Role: Sensor fusion processor combining MagSense (for precise metal position tracking) and CapSense (for palm rejection) on shared GPIOs. Use Value: Enables accurate linear position measurement (±0.5 mm) under wide temperature range (−40°C to +105°C) without external ADC or signal chain components. | Use Scenario: Waterproof touch controls on dishwasher and oven fronts with condensation and detergent exposure. IC Role / Device Role / Timing Role: Capacitive sensing engine using CSD modulation and SmartSense auto-calibration to maintain stable baseline despite surface film buildup. Use Value: Achieves >5:1 SNR and false-trigger immunity after 500+ hours of salt-spray testing - meets IEC 60730 Class B functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4724FNI-S402 | Same PSoC 4700S family, but with 16 KB flash and no MagSense support - lacks inductive sensing IP block and associated firmware components | Restricted to capacitive-only HMI; cannot replace CY8C4725FNI-S402T in metal-detection applications | Select only if design requires lower cost and exclusively non-metal touch interfaces |
| STM32G071KBT6 | Arm Cortex-M0+, 64 MHz, 128 KB flash, but no integrated MagSense or CapSense hardware - requires external RC networks and software-based sensing algorithms | Lacks hardware-accelerated sensing; SNR and water tolerance inferior without dedicated analog front-end | Choose when needing higher flash capacity and standard peripherals, but accept added firmware complexity and reduced sensing robustness |
Compared with CY8C4724FNI-S402 and STM32G071KBT6, CY8C4725FNI-S402T uniquely delivers production-ready MagSense/ CapSense co-sensing in one die, reducing system-level calibration effort by ≥70% and enabling true touchless metal interaction not achievable with generic MCUs.
Availability
CY8C4725FNI-S402T is available at Aetrix Electronics and suitable for industrial HMI panels, medical device controls, automotive cabin sensors, and appliance user interfaces requiring stable component supply and long-term lifecycle support.
Supply support for CY8C4725FNI-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 part belongs to the PSoC 4700S product line, engineered specifically to unify inductive and capacitive sensing in a single programmable SoC - targeting next-generation touchless human-machine interfaces where reliability under harsh environmental conditions is critical.
FAQ
What development tools are required to program CY8C4725FNI-S402T?
PSoC Creator IDE (free, Windows-only) is mandatory for hardware configuration and component-based firmware generation. It provides schematic-driven design entry, automatic analog/digital routing, and pre-verified MagSense/CapSense components. Debugging requires a KitProg2 or MiniProg4 programmer supporting SWD interface at up to 48 MHz.
Does CY8C4725FNI-S402T support functional safety certification?
While not ASIL-B certified out-of-box, the device includes hardware features aligned with IEC 61508 and ISO 13849: dual-clock domain monitoring, memory parity, watchdog timer with independent LFCLK source, and lockable flash protection. Customers implement safety mechanisms using PSoC Creator's safety libraries and follow Infineon's KBA228212 functional safety guidelines.
Can MagSense and CapSense operate simultaneously on the same GPIO pin?
No - MagSense and CapSense share the same physical GPIO structure but require exclusive time-division multiplexing. A single pin may be configured for either MagSense coil drive or CapSense electrode in a given firmware build, but not both concurrently. Time-sliced operation across multiple pins is supported via PSoC Creator's component scheduler.
What is the maximum operating temperature for continuous MagSense operation?
The device is rated for continuous operation from −40°C to +105°C ambient. MagSense performance remains stable across this range due to on-chip temperature compensation in the MagSense firmware component and trimming of the IMO against the WCO reference - verified per JEDEC JESD22-A104 thermal cycling test.
CY8C4725FNI-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, LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 21
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 16x10b; D/A 2x7b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4725FNI-S402T FAQ
1.How can I place an order for CY8C4725FNI-S402T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4725FNI-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 CY8C4725FNI-S402T reliable?
The price and inventory of CY8C4725FNI-S402T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4725FNI-S402T is usually 5 days.
3.What payment methods are accepted for CY8C4725FNI-S402T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4725FNI-S402T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4725FNI-S402T?
CY8C4725FNI-S402T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4725FNI-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 CY8C4725FNI-S402T?
For technical support, including CY8C4725FNI-S402T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4725FNI-S402T requirements.
6.How does Aetrix verify that CY8C4725FNI-S402T is sourced from the original manufacturer or authorized distributors?
All CY8C4725FNI-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 CY8C4725FNI-S402T meets industry standards.
7.What is the process for return or replacement of CY8C4725FNI-S402T?
All CY8C4725FNI-S402T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4725FNI-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 CY8C4725FNI-S402T part is unused and in its original packaging.
Return procedure for CY8C4725FNI-S402T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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