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Infineon Technologies CY8C4725LQI-S401
- Part No.:
- CY8C4725LQI-S401
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY8C4725LQI-S401.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:980
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Product details
Overview
CY8C4725LQI-S401 from Infineon Technologies (formerly Cypress) is a 32-bit Arm Cortex-M0+ programmable system-on-chip (PSoC) with integrated MagSense™ inductive sensing and CapSense® capacitive sensing. It features 48 MHz CPU, 32 KB flash, 4 KB SRAM, five 16-bit TCPWM blocks, two SCBs supporting I²C/SPI/UART, and operates from 1.71–5.5 V. Used in metal proximity detection and touch interface systems requiring mixed-signal reconfigurability.
For engineers reviewing the CY8C4725LQI-S401 datasheet, CY8C4725LQI-S401 pinout, CY8C4725LQI-S401 application, or CY8C4725LQI-S401 equivalent, key selection criteria include its dual-sensing capability (up to 16 MagSense channels + CapSense sigma-delta), Deep Sleep current of 2.5 µA with operational analog, and SmartIO Boolean logic for hardware-level signal conditioning without CPU intervention.
Technical Context
The device integrates a single-layer AHB-Lite interconnect linking the Cortex-M0+ core, flash accelerator, and SRAM controller with dedicated analog/digital routing matrices. Its clock architecture combines IMO (24–48 MHz, ±2%), ILO (40 kHz), and WCO (32 kHz) sources with eight programmable dividers-including two fractional-enabling precise peripheral clocking for UART baud generation and TCPWM timing.
Analog subsystem includes one 10-bit single-slope ADC, two IDACs (±5% reference), and two low-power comparators active in Deep Sleep mode. Digital resources comprise two SmartIO ports for Boolean operations on GPIOs, five TCPWM blocks supporting center-aligned PWM and comparator-triggered kill signals, and configurable GPIOs supporting LCD segment drive and programmable slew rates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, 48 MHz max - enables real-time sensor fusion with deterministic interrupt latency under 12 cycles. |
| Flash / SRAM | 32 KB flash with Read Accelerator / 4 KB zero-wait-state SRAM - supports firmware updates and runtime data buffering without performance penalty. |
| Inductive Sensing | Up to 16 MagSense channels - detects sub-190 nm metal deflection with factory-calibrated noise immunity for industrial position sensing. |
| Capacitive Sensing | CapSense Sigma-Delta (CSD) with >5:1 SNR - delivers water-tolerant touch buttons and sliders without external shielding or recalibration. |
| Power Modes | Deep Sleep at 2.5 µA with analog active - sustains continuous inductive/capacitive monitoring while preserving battery life in portable devices. |
| Communication | Two reconfigurable SCBs - each supports I²C, SPI, or UART independently at runtime, enabling flexible peripheral bridging without hardware redesign. |
| GPIO | 36 programmable pins - any pin supports analog input, digital I/O, CapSense, or MagSense; up to 16 assignable to inductive sensing. |
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 | Primary power supply | Accepts 1.71–5.5 V; powers digital core, analog blocks, and I/O banks with internal regulation. |
| VSS | Ground reference | Digital and analog ground plane connection; requires low-impedance PCB return path for sensing integrity. |
| XRES | External reset input | Active-low asynchronous reset with internal pull-up; asserts full system reset including flash controller and clock system. |
| P0[0]–P0[7] | Programmable GPIO bank | Supports CapSense, MagSense, analog input, or digital I/O; configurable drive strength and slew rate per pin. |
| SCB0_SDA / SCB0_SCL | I²C interface signals | Configurable as open-drain I²C bus lines with internal pull-ups; share pins with GPIO functions via HSIOM routing. |
| SWDCLK / SWDIO | Debug interface | Two-wire Serial Wire Debug interface for programming and real-time debugging; no external pull-ups required. |
Key Features
| Feature | Design Value |
|---|---|
| MagSense™ technology | Enables contactless metal detection with <190 nm resolution and automatic calibration across manufacturing variance. |
| CapSense® CSD engine | Delivers >5:1 signal-to-noise ratio and built-in water tolerance - eliminates need for overlay gap or shield layers in wet environments. |
| SmartIO Boolean logic | Performs AND/OR/XOR on GPIO inputs/outputs in hardware - offloads CPU for real-time signal conditioning (e.g., debounce, edge detection). |
| Deep Sleep analog operation | Maintains active comparators and IDACs at 2.5 µA system current - enables always-on proximity wake-up without CPU polling. |
| Runtime-reconfigurable SCBs | Each SCB dynamically switches between I²C, SPI, and UART protocols - reduces BOM count and simplifies firmware adaptation to different host interfaces. |
Applications
| Industrial Proximity Switch | Appliance Touch Interface |
|---|---|
Use Scenario: Detecting metal presence in automated assembly lines without physical contact or wear. IC Role / Device Role / Timing Role: MagSense channel processes coil resonance shift; TCPWM generates excitation frequency; Deep Sleep maintains sensing during idle periods. Use Value: Eliminates mechanical switch failure; achieves nanometer-level deflection detection with factory-trimmed calibration. | Use Scenario: Water-resistant control panel on washing machines or dishwashers exposed to splashes and condensation. IC Role / Device Role / Timing Role: CapSense CSD engine performs sigma-delta modulation; SmartIO filters false triggers from moisture; IDACs auto-adjust baseline. Use Value: Maintains button functionality under 1 mm water film without overlay redesign or additional shielding layers. |
| Motorized Valve Position Feedback | Medical Handheld Device UI |
Use Scenario: Monitoring rotational position of stainless-steel valve stems in HVAC or fluid control systems. IC Role / Device Role / Timing Role: MagSense measures angular displacement via multi-coil array; TCPWM provides synchronized excitation and sampling timing. Use Value: Replaces potentiometers and Hall sensors - immune to dust, oil, and EMI in harsh environments. | Use Scenario: Battery-powered diagnostic tool requiring ultra-low-power touch navigation and status indication. IC Role / Device Role / Timing Role: Deep Sleep mode with active CapSense wakeup; SRAM retention during sleep; flash accelerator enables fast boot from standby. Use Value: Extends battery life beyond 12 months on coin cell while supporting responsive touch response within 15 ms wake time. |
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 |
|---|---|---|---|
| CY8C4745LQI-S401 | Same PSoC 4700S family; adds 2x more CapSense sensors (32 vs. 16) and 1 KB extra SRAM. | Required when simultaneous multi-zone touch + inductive sensing exceeds 16 total channels. | Select if design needs expanded sensor count without changing layout or firmware architecture. |
| STM32G071KBT6 | No integrated MagSense or CapSense; relies on external RC networks and software-based touch algorithms. | Suitable only for basic capacitive touch or discrete inductive sensing with external ASICs. | Choose only when cost sensitivity outweighs integration benefits and engineering effort for sensor algorithm development. |
Compared with CY8C4725LQI-S401, CY8C4745LQI-S401 offers higher sensor density but identical package and pinout, whereas STM32G071KBT6 requires external components and custom firmware for equivalent sensing functionality - increasing BOM count and validation effort.
Availability
CY8C4725LQI-S401 is available at Aetrix Electronics and suitable for industrial proximity sensing, appliance touch interfaces, motorized valve feedback, and medical handheld UIs requiring stable component supply and long-term lifecycle support.
Supply support for CY8C4725LQI-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 acquired Cypress Semiconductor in 2020 and now owns and supports the full PSoC portfolio, delivering high-reliability semiconductor solutions for automotive, industrial, and IoT markets.
This part belongs to the PSoC 4700S family - designed specifically to integrate inductive and capacitive sensing into a single MCU for robust human-machine interface and position-sensing applications in harsh environments.
FAQ
What development tools are required to program CY8C4725LQI-S401?
PSoC Creator IDE (free Windows-based tool) is required for schematic-driven hardware configuration and firmware development. It provides drag-and-drop peripheral components, automatic routing, and APIs for MagSense and CapSense. Programming uses standard SWD interface via MiniProg3 or KitProg2 debug probes - no third-party toolchain licensing needed.
Does CY8C4725LQI-S401 support hardware-accelerated encryption?
No. This device does not include cryptographic accelerators or secure key storage. It lacks AES, SHA, or TRNG modules. For designs requiring secure boot or data encryption, Infineon's PSoC 6 series (e.g., CY8C6247FDI-D52) provides dedicated ARM TrustZone and cryptographic peripherals - CY8C4725LQI-S401 is optimized for sensing and real-time control, not security processing.
Can the MagSense and CapSense blocks operate simultaneously?
Yes. The analog subsystem supports concurrent operation: MagSense excitation and demodulation runs on dedicated analog routing paths while CapSense CSD engine performs sigma-delta conversion on separate channels. Both subsystems remain active in Deep Sleep mode with independent clock domains and shared SRAM for fused sensor data.
What is the maximum operating temperature for CY8C4725LQI-S401?
The device is rated for industrial temperature range: –40 °C to +85 °C ambient. Thermal derating begins above 70 °C ambient when operating at 48 MHz with all peripherals active; full specification compliance is guaranteed across the full range when voltage supply remains within 1.71–5.5 V and PCB thermal vias meet Infineon's recommended layout guidelines.
CY8C4725LQI-S401 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 24-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4700S
- 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, LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 19
- 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:
CY8C4725LQI-S401 FAQ
1.How can I place an order for CY8C4725LQI-S401 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4725LQI-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 CY8C4725LQI-S401 reliable?
The price and inventory of CY8C4725LQI-S401 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4725LQI-S401 is usually 5 days.
3.What payment methods are accepted for CY8C4725LQI-S401?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4725LQI-S401 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4725LQI-S401?
CY8C4725LQI-S401 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4725LQI-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 CY8C4725LQI-S401?
For technical support, including CY8C4725LQI-S401 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4725LQI-S401 requirements.
6.How does Aetrix verify that CY8C4725LQI-S401 is sourced from the original manufacturer or authorized distributors?
All CY8C4725LQI-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 CY8C4725LQI-S401 meets industry standards.
7.What is the process for return or replacement of CY8C4725LQI-S401?
All CY8C4725LQI-S401 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4725LQI-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 CY8C4725LQI-S401 part is unused and in its original packaging.
Return procedure for CY8C4725LQI-S401:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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