My Inquiry
My Account
Infineon Technologies CY8C4025LQI-S402
- Part No.:
- CY8C4025LQI-S402
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-UFQFN Exposed Pad
- Datasheet:
-
CY8C4025LQI-S402.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,900
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C4025LQI-S402 from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller with 24 KB flash, 4 KB SRAM, and integrated CAPSENSE™ capacitive sensing. 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 touch interfaces in consumer and industrial HMI applications.
For engineers reviewing the CY8C4025LQI-S402 datasheet, CY8C4025LQI-S402 pinout, CY8C4025LQI-S402 application, or CY8C4025LQI-S402 equivalent, key selection criteria include its 48-MHz CPU performance, dual SCB blocks (I²C/SPI/UART), five TCPWM units with comparator-triggered kill signals, and programmable analog blocks including two IDACs and two low-power comparators.
Technical Context
The device integrates a single-core Arm® Cortex®-M0+ CPU running at up to 48 MHz with single-cycle multiply, coupled with a flexible digital fabric of programmable logic blocks and fixed-function peripherals including TCPWM, SCB, and GPIO routing matrix. Its analog subsystem includes dedicated CAPSENSE™ sigma-delta sensing with SmartSense auto-tuning and two current DACs usable on any GPIO.
System-level timing relies on multiple clock sources: ±2% IMO, 32-kHz WCO, and 32-kHz ILO - enabling precise low-power wake-up and real-time control. Power management supports five operational modes, with Deep Sleep sustaining analog functionality while drawing only 2.5 µA system current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables deterministic real-time firmware execution with minimal interrupt latency. |
| Flash / SRAM | 24 KB flash with read accelerator / 4 KB SRAM - sufficient for embedded touch + communication stacks without external memory. |
| Capacitive Sensing | CAPSENSE™ v2 with sigma-delta architecture and >5:1 SNR - supports robust, water-tolerant buttons/sliders in humid environments. |
| Serial Interfaces | 2 × SCB blocks, runtime-reconfigurable as I²C/SPI/UART - allows dynamic peripheral assignment without hardware change. |
| PWM & Timing | 5 × 16-bit TCPWM blocks with center-aligned, edge, and pseudo-random modes - suitable for motor control and LED dimming. |
| Power Modes | Deep Sleep at 2.5 µA with active analog - enables battery-powered touch interfaces with multi-year operation. |
| GPIO Count | Up to 36 programmable pins in 48-pin TQFP package - supports mixed-signal routing with configurable drive strength and slew rate. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free.
| 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. |
| VSS | Digital ground | Reference return for digital circuitry and internal regulators. |
| XRES | External reset input | Active-low asynchronous reset; debounced internally for reliable startup. |
| SWDCLK / SWDIO | Debug interface | ARM Serial Wire Debug pins - enable full on-chip programming and real-time debugging without JTAG. |
| P0[0]–P0[7] | Programmable GPIO | Support CAPSENSE™, analog input/output, digital logic, or LCD segment drive - all with configurable drive modes. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning and ensures consistent touch response across temperature/humidity. |
| Programmable analog blocks | Two IDACs and two low-power comparators operate in Deep Sleep - enabling always-on capacitive wake-up without CPU intervention. |
| Reconfigurable SCBs | Each serial block can be independently assigned as I²C master/slave, SPI master/slave, or UART - reducing BOM count and PCB footprint. |
| TCPWM kill signal | Comparator output directly triggers PWM shutdown within one clock cycle - critical for safe motor control and overcurrent protection. |
Applications
| Home Appliance Control Panel | Industrial HMI Touch Interface |
|---|---|
Use Scenario: Capacitive touch buttons and sliders on washing machine or oven control panel exposed to steam and condensation. IC Role / Device Role / Timing Role: Primary MCU handling CAPSENSE™ acquisition, UI state machine, and appliance communication via UART to main controller. Use Value: >5:1 SNR and water tolerance ensure reliable operation without mechanical switches or overlay shielding. | Use Scenario: Operator panel in factory automation equipment requiring ESD-hardened, glove-compatible touch input. IC Role / Device Role / Timing Role: Standalone HMI controller managing touch, LED indicators, and RS-485 communication to PLC. Use Value: Dual SCBs support simultaneous UART diagnostics and RS-485 protocol stack with hardware CRC and parity. |
| Smart Thermostat Display | Medical Device Keypad |
Use Scenario: Battery-powered wall-mounted thermostat with ambient light sensing and capacitive touch navigation. IC Role / Device Role / Timing Role: System-on-chip managing touch, temperature ADC, display backlight PWM, and BLE coexistence timing. Use Value: Deep Sleep at 2.5 µA extends CR2032 battery life beyond 2 years while maintaining instant wake-on-touch. | Use Scenario: Handheld diagnostic tool with sealed front panel requiring sterile, wipe-clean touch interface. IC Role / Device Role / Timing Role: Safety-critical input processor validating touch gestures before forwarding commands to main SoC. Use Value: Hardware-based SmartSense and comparator-triggered fail-safe logic reduce software validation burden for IEC 62304 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable MCU with integrated capacitive sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4025AZI-S402 | Same core and peripherals, but in 40-pin QFN (5 mm × 5 mm) instead of 48-pin TQFP - 4 fewer GPIOs, no WCO pin. | Better suited for space-constrained designs where crystal-less operation is acceptable. | Select when board area is critical and external 32-kHz timing is not required. |
| CY8C4014LQI-S412 | Lower memory (16 KB flash / 2 KB SRAM), same CAPSENSE™ and SCB features, but only 24 GPIOs and no LCD drive capability. | Targeted at cost-sensitive, lower-feature HMI applications such as basic remote controls. | Select when application firmware size < 16 KB and LCD output is unnecessary. |
Compared with CY8C4025AZI-S402 and CY8C4014LQI-S412, the CY8C4025LQI-S402 offers the largest GPIO count and full WCO support in TQFP packaging - making it optimal for prototyping, legacy pin-compatible upgrades, and designs requiring crystal-based timing stability.
Availability
CY8C4025LQI-S402 is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMI interfaces, and smart thermostat displays requiring stable component supply and long-term manufacturability.
Supply support for CY8C4025LQI-S402 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 embedded controllers, with global R&D and manufacturing infrastructure.
The PSoC™ 4000S product line targets cost-optimized, highly integrated MCU solutions for human-machine interface applications - emphasizing programmable analog/digital flexibility, ultra-low-power touch, and rapid development using ModusToolbox™ or PSoC™ Creator.
FAQ
What debug interface does CY8C4025LQI-S402 support?
CY8C4025LQI-S402 uses ARM Serial Wire Debug (SWD) with SWDCLK and SWDIO pins. It supports full on-chip programming, real-time debugging, and trace without JTAG headers or external pods. The debug circuits are enabled by default but can be disabled in firmware for security.
Does CY8C4025LQI-S402 support crystal oscillator input?
Yes - it includes a dedicated 32 kHz watch crystal oscillator (WCO) input pair (XIN/XOUT) for high-accuracy real-time clock and low-power wake-up timing. This is distinct from its ±2% internal main oscillator (IMO) and 32 kHz internal low-power oscillator (ILO).
Can CAPSENSE™ operate during Deep Sleep mode?
Yes - CAPSENSE™ sigma-delta sensing remains fully functional in Deep Sleep mode, drawing only 2.5 µA total system current. The SmartSense auto-tuning and comparator outputs remain active, enabling wake-on-touch without CPU involvement.
Is CY8C4025LQI-S402 pin-compatible with other PSoC™ 4000S devices?
Within the 48-pin TQFP package variant, CY8C4025LQI-S402 shares identical pinout with other CY8C40xx-LQI parts (e.g., CY8C4014LQI-S412), though feature sets differ. Pin functions are consistent, but unused peripherals (e.g., LCD drive) are disabled in lower-tier variants.
CY8C4025LQI-S402 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4000S
- 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, CapSense, LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 27
- 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:
CY8C4025LQI-S402 FAQ
1.How can I place an order for CY8C4025LQI-S402 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4025LQI-S402 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 CY8C4025LQI-S402 reliable?
The price and inventory of CY8C4025LQI-S402 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4025LQI-S402 is usually 5 days.
3.What payment methods are accepted for CY8C4025LQI-S402?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4025LQI-S402 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4025LQI-S402?
CY8C4025LQI-S402 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4025LQI-S402 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 CY8C4025LQI-S402?
For technical support, including CY8C4025LQI-S402 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4025LQI-S402 requirements.
6.How does Aetrix verify that CY8C4025LQI-S402 is sourced from the original manufacturer or authorized distributors?
All CY8C4025LQI-S402 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 CY8C4025LQI-S402 meets industry standards.
7.What is the process for return or replacement of CY8C4025LQI-S402?
All CY8C4025LQI-S402 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4025LQI-S402, 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 CY8C4025LQI-S402 part is unused and in its original packaging.
Return procedure for CY8C4025LQI-S402:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C4025LQI-S402 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…
