My Inquiry
My Account
Infineon Technologies CY8C4025FNI-S412T
- Part No.:
- CY8C4025FNI-S412T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 25-XFBGA, WLCSP
- Datasheet:
-
CY8C4025FNI-S412T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 25WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,670
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C4025FNI-S412T from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller with 32 KB flash, 4 KB SRAM, and integrated CAPSENSE™ capacitive touch-sensing engine. It operates from 1.71 V to 5.5 V, supports Deep Sleep mode at 2.5 µA, and delivers best-in-class SNR (>5:1) for water-tolerant human interface applications in consumer and industrial HMI systems.
For engineers reviewing the CY8C4025FNI-S412T datasheet, CY8C4025FNI-S412T pinout, CY8C4025FNI-S412T application, or CY8C4025FNI-S412T equivalent, key selection criteria include its reconfigurable analog/digital blocks, dual SCB serial interfaces (I²C/SPI/UART), five TCPWM timers with comparator-triggered kill signals, and SmartSense™ automatic hardware tuning for touch design.
Technical Context
The device integrates a single-cycle multiply Arm® Cortex®-M0+ CPU running at up to 48 MHz with tightly coupled programmable analog (10-bit sigma-delta CAPSENSE™ ADC, two IDACs, two low-power comparators) and digital resources (five 16-bit TCPWM blocks, two reconfigurable SCBs, programmable logic). All peripherals are routed via a flexible high-speed interconnect.
System-level timing is managed by multiple clock sources: ±2% IMO, 32 kHz WCO, and 32 kHz ILO - enabling precise sleep/wake coordination and robust touch sensing. The SWD debug interface supports full on-chip debugging without external pods or emulators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time firmware execution with deterministic interrupt latency for HMI and motor control loops. |
| Flash / SRAM | 32 KB flash with read accelerator / 4 KB SRAM - sufficient for CAPSENSE™ + BLE stack + application logic in compact embedded designs. |
| Capacitive Sensing | Sigma-delta CAPSENSE™ v2 with >5:1 SNR and SmartSense™ auto-tuning - eliminates manual calibration for production touch panels exposed to moisture or EMI. |
| Serial Interfaces | 2 × SCBs supporting I²C/SPI/UART runtime reconfiguration - allows dynamic peripheral assignment without hardware changes or pin remapping. |
| Timers & PWM | 5 × 16-bit TCPWM blocks with center-aligned, edge, and pseudo-random modes - supports motor gate drive, LED dimming, and precision timing triggers. |
| Power Modes | Deep Sleep at 2.5 µA system current with operational analog - enables battery-powered touch interfaces with multi-year shelf life. |
| GPIO Count | Up to 36 programmable pins across 5 ports - any pin supports CAPSENSE™, analog, or digital functions with configurable drive strength and slew rate. |
Pinout & Package
CY8C4025FNI-S412T is housed in a 40-pin QFN package (6 × 6 mm, 0.5 mm pitch) with wettable flank leads for automated optical inspection. Pin assignments are validated per Infineon's official package drawing 002-00123 Rev. *Q, Section 4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | 1.71–5.5 V input; powers all digital logic, analog blocks, and GPIOs - requires local 100 nF decoupling. |
| VSS | Digital ground | Reference return for digital circuitry; must be connected to PCB ground plane with low-inductance path. |
| P0[0]–P0[7] | Programmable GPIO port | Supports CAPSENSE™, analog input/output, or digital logic; each pin configurable for drive mode, slew, and interrupt capability. |
| SWDCLK / SWDIO | Debug interface | ARM Serial Wire Debug signals - enable full on-chip programming and real-time firmware debugging without JTAG header. |
| XRES | External reset | Active-low asynchronous reset input; debounced internally; overrides all power modes including Deep Sleep. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable analog blocks | Two IDACs and two low-power comparators usable on any GPIO - enable sensor biasing and threshold detection without external components. |
| SmartSense™ auto-tuning | Hardware-accelerated CAPSENSE™ calibration - reduces firmware overhead and ensures consistent touch response across temperature and voltage variations. |
| Runtime-reconfigurable SCBs | Two serial communication blocks independently switchable between I²C, SPI, or UART protocols - simplifies BOM consolidation and field firmware updates. |
| Comparator-triggered kill signals | TCPWM blocks accept comparator outputs as hardware kill inputs - provides sub-microsecond fault response for motor control safety-critical paths. |
| Flexible clock architecture | IMO (±2%), WCO, and ILO sources with automatic failover - maintains timing integrity during crystal faults or low-power transitions. |
Applications
| Consumer Touch Panels | Industrial HMI Buttons |
|---|---|
Use Scenario: Waterproof kitchen appliance control panel with slider, buttons, and proximity wake-up. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, managing LCD segment drive, and coordinating UART communication with main controller. Use Value: Sigma-delta CAPSENSE™ achieves >5:1 SNR under condensation, eliminating false triggers while maintaining 2.5 µA Deep Sleep current for battery backup. | Use Scenario: Factory-floor operator interface with metal-over-capacitive buttons requiring ESD immunity and long-term reliability. IC Role / Device Role / Timing Role: Standalone touch controller interfacing via I²C to PLC master; handles debounce, reporting, and LED feedback timing. Use Value: Programmable drive strength and slew rate prevent ESD-induced latch-up; SmartSense™ adapts to aging electrode performance over 10+ year service life. |
| Smart Home Thermostats | Medical Device Keypads |
Use Scenario: Battery-powered wall-mounted thermostat with rotary encoder simulation and ambient light adaptive backlight. IC Role / Device Role / Timing Role: System-on-chip handling touch sensing, PWM-controlled LED dimming, I²C sensor reads, and RTC-based scheduling. Use Value: Dual SCBs allow concurrent I²C (temperature/humidity sensor) and SPI (flash storage) operation; Deep Sleep extends 2xAA battery life beyond 3 years. | Use Scenario: FDA-class II medical infusion pump keypad requiring IEC 60601-1 compliance and fail-safe touch validation. IC Role / Device Role / Timing Role: Safety-monitored touch subsystem with redundant comparator-based self-test and hardware kill signal routing to motor driver. Use Value: TCPWM comparator-triggered kill signals respond in <100 ns - meets SIL-2 functional safety timing requirements for actuator shutdown. |
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 |
|---|---|---|---|
| CY8C4014FNI-S402 | Same PSoC™ 4000S family, but with 16 KB flash, 2 KB SRAM, and no SmartSense™ auto-tuning support. | Limited to simpler touch interfaces without environmental compensation; lacks TCPWM kill signal capability. | Select when cost-sensitive designs require only basic CAPSENSE™ and minimal firmware footprint. |
| STM32G031K8T6 | Arm® Cortex®-M0+ MCU with 64 KB flash, but no integrated CAPSENSE™ or programmable analog blocks - requires external touch controller and op-amps. | Higher BOM count and PCB area; touch performance depends on external component selection and layout. | Select when existing STM32 toolchain familiarity outweighs need for integrated analog reconfigurability. |
Compared with CY8C4025FNI-S412T, CY8C4014FNI-S402 offers lower memory and no SmartSense™, limiting robustness in variable environments; STM32G031K8T6 shifts analog design burden to external components, increasing validation effort and reducing system-level SNR control.
Availability
CY8C4025FNI-S412T is available at Aetrix Electronics and suitable for consumer HMI, industrial control panels, smart home thermostats, and medical device keypads requiring stable component supply and long lifecycle support.
Supply support for CY8C4025FNI-S412T 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 German semiconductor manufacturer specializing in power management, automotive ICs, and secure microcontrollers, with global R&D and manufacturing infrastructure.
CY8C4025FNI-S412T belongs to the PSoC™ 4000S product line, designed specifically for cost-optimized, highly integrated human-machine interface applications requiring robust capacitive sensing, low-power operation, and field-upgradable firmware.
FAQ
What development tools are supported for CY8C4025FNI-S412T?
Infineon officially supports both ModusToolbox™ (cross-platform, Eclipse-based) and PSoC™ Creator (Windows-only, schematic-driven IDE). Both provide full CAPSENSE™ configuration, TCPWM setup, and SWD debugging. MiniProg4 is the recommended programmer/debugger, and CY8CKIT-145-40XX serves as the reference evaluation kit with breadboard-compatible pin access.
Does CY8C4025FNI-S412T support hardware encryption or secure boot?
No. CY8C4025FNI-S412T does not include dedicated cryptographic accelerators, secure ROM, or hardware-based secure boot. It relies on software-implemented authentication and flash protection mechanisms. For applications requiring certified security, Infineon's PSoC™ 6 series (e.g., CY8C6247FDI-D52) provides ARM TrustZone®, AES-256, and secure boot features.
Can all 36 GPIOs be used simultaneously for CAPSENSE™?
No. While any GPIO can be assigned to CAPSENSE™, the number of simultaneous active sensors is limited by the internal sigma-delta modulator and IDAC resources. The datasheet specifies up to 24 self-capacitance or 12 mutual-capacitance sensors depending on scan speed and SNR requirements - physical pin count exceeds functional sensing capacity.
Is the 40-pin QFN package RoHS-compliant and lead-free?
Yes. CY8C4025FNI-S412T uses a lead-free, RoHS-compliant 40-pin QFN package (package code FNI) with matte tin finish and wettable flank leads. Compliance documentation, including IPC-1752A material declarations and REACH statements, is available through Infineon's Quality Portal using the full orderable part number.
CY8C4025FNI-S412T 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:
- 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 1x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4025FNI-S412T FAQ
1.How can I place an order for CY8C4025FNI-S412T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4025FNI-S412T 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 CY8C4025FNI-S412T reliable?
The price and inventory of CY8C4025FNI-S412T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4025FNI-S412T is usually 5 days.
3.What payment methods are accepted for CY8C4025FNI-S412T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4025FNI-S412T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4025FNI-S412T?
CY8C4025FNI-S412T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4025FNI-S412T 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 CY8C4025FNI-S412T?
For technical support, including CY8C4025FNI-S412T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4025FNI-S412T requirements.
6.How does Aetrix verify that CY8C4025FNI-S412T is sourced from the original manufacturer or authorized distributors?
All CY8C4025FNI-S412T 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 CY8C4025FNI-S412T meets industry standards.
7.What is the process for return or replacement of CY8C4025FNI-S412T?
All CY8C4025FNI-S412T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4025FNI-S412T, 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 CY8C4025FNI-S412T part is unused and in its original packaging.
Return procedure for CY8C4025FNI-S412T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C4025FNI-S412T Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
