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Infineon Technologies CY8C4025AXI-S402
- Part No.:
- CY8C4025AXI-S402
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
CY8C4025AXI-S402.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 32TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,171
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Product details
Overview
CY8C4025AXI-S402 from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller in the PSoC™ 4000S family, integrating programmable analog (CAPSENSE™ v2, 10-bit ADC, dual IDACs), digital logic blocks, and two reconfigurable serial communication blocks (SCBs). It operates from 1.71 V to 5.5 V, supports Deep Sleep at 2.5 µA, and delivers up to 48 MHz CPU performance with 32 KB flash and 4 KB SRAM. Used in capacitive touch HMI systems requiring water-tolerant sensing and low-power operation.
For engineers reviewing the CY8C4025AXI-S402 datasheet, CY8C4025AXI-S402 pinout, CY8C4025AXI-S402 application, or CY8C4025AXI-S402 equivalent, key selection criteria include CAPSENSE™ sigma-delta SNR (>5:1), SmartSense auto-tuning capability, dual SCB flexibility (I²C/SPI/UART), TCPWM kill-signal triggering for motor control, and 36-pin GPIO configurability across analog/digital/CAPSENSE™ roles.
Technical Context
The device implements a single-core Arm® Cortex®-M0+ CPU with hardware multiply, coupled with a configurable analog subsystem featuring capacitive sigma-delta sensing (CSD) and continuous-time opamp-based blocks. Its digital fabric includes five 16-bit TCPWM modules supporting center-aligned PWM and comparator-triggered fault shutdown - critical for motor drive safety logic.
System-level timing relies on multiple clock sources: ±2% IMO, 32 kHz WCO, and ILO for Deep Sleep wake-up. The IOSS (I/O Subsystem) enables per-pin drive mode, slew rate, and strength configuration, while 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™ firmware, TCPWM control code, and dual-SCB protocol stacks without external memory. |
| CAPSENSE™ | Sigma-delta CSD with >5:1 SNR and SmartSense auto-tuning - eliminates manual calibration effort and maintains reliable touch detection under wet conditions. |
| Serial Peripherals | 2 × SCBs, runtime-reconfigurable as I²C/SPI/UART - allows dynamic peripheral assignment without hardware changes or pin remapping. |
| Power Modes | Deep Sleep at 2.5 µA with active analog - supports battery-powered touch interfaces requiring multi-year operation on coin cells. |
| GPIO Count | 36 programmable pins - all support CAPSENSE™, analog input/output, or digital logic, enabling consolidated BOMs in space-constrained designs. |
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 | Accepts 1.71–5.5 V; powers CPU, SRAM, flash, and GPIO; requires local decoupling per datasheet layout guidelines. |
| VSS | Digital ground | Reference return path for digital logic and SWD interface; must be connected to system GND plane with low-inductance routing. |
| P0[0]–P0[7] | Port 0 GPIO | Support CAPSENSE™, analog input, or digital I/O; configurable drive strength (0.5–20 mA) and slew rate (slow/fast). |
| SWDCLK / SWDIO | Debug interface | Two-pin Arm® Serial Wire Debug - enables full firmware download, breakpoint, and register inspection using MiniProg4 or industry-standard debuggers. |
| XRES | External reset | Active-low asynchronous reset input; debounced internally; can be driven by external supervisor or pushbutton. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Blocks | Capacitive sigma-delta sensing (CSD) + dual current DACs (IDACs) - enables high-SNR touch buttons/sliders and self-calibrating sensor excitation without external components. |
| Reconfigurable Digital Logic | Boolean logic blocks on port I/O - permits custom glue logic (e.g., AND/OR of button states) without consuming CPU cycles or adding discrete gates. |
| SmartSense Auto-Tuning | Firmware-driven automatic CAPSENSE™ parameter adjustment - removes production line calibration steps and compensates for PCB aging or environmental drift. |
| TCPWM Fault Handling | Comparator-triggered kill signal generation - provides hardware-level response (<100 ns) to overcurrent or overtemperature events in motor gate drivers. |
Applications
| Home Appliance Control Panel | Industrial HMI Touch Interface |
|---|---|
Use Scenario: Capacitive touch overlay on microwave oven or washing machine control panel exposed to steam and condensation. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, managing display backlight via PWM, and communicating with main controller via I²C. Use Value: Water-tolerant sigma-delta sensing (>5:1 SNR) and SmartSense eliminate false triggers during humid operation without mechanical buttons or sealed membranes. | Use Scenario: Operator panel on PLC-controlled packaging machine requiring ESD-hardened touch inputs and real-time status feedback. IC Role / Device Role / Timing Role: Standalone HMI controller handling touch event processing, LED/PWM status indicators, and UART communication with industrial bus master. Use Value: 36 GPIOs allow direct connection to multiple LEDs, buttons, and sensors; Deep Sleep mode extends uptime between maintenance cycles. |
| Medical Device Keypad | Smart Lighting Dimmer Module |
Use Scenario: Touch-sensitive keypad on portable diagnostic equipment where reliability and low power are critical. IC Role / Device Role / Timing Role: Dedicated CAPSENSE™ processor interfacing with host MCU via SPI; manages debounce, proximity detection, and gesture recognition. Use Value: Dual IDACs enable precise current sourcing for varying electrode sizes; 2.5 µA Deep Sleep supports battery backup during standby. | Use Scenario: DALI-2 or 0–10 V dimmer module with integrated touch slider and thermal monitoring. IC Role / Device Role / Timing Role: System-on-chip controller running dimming algorithm, reading NTC thermistor via ADC, and driving triac gate via TCPWM. Use Value: Five TCPWM blocks support simultaneous phase-cut dimming, fan speed control, and LED indicator PWM - reducing external component count. |
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 |
|---|---|---|---|
| CY8C4025LQI-S402 | Same core and peripherals, but in 40-pin QFN (5 mm × 5 mm) instead of 48-pin TQFP - 4 fewer GPIOs, no LCD segment drive capability. | Better suited for compact, cost-sensitive consumer devices where board area is constrained and LCD drive is unnecessary. | Select when footprint reduction outweighs need for maximum GPIO count or LCD support. |
| CY8C4014LQI-S402 | Lower memory: 16 KB flash / 2 KB SRAM; same CAPSENSE™ and SCB features; identical 40-pin QFN package. | Ideal for simpler touch-only applications without complex firmware or multi-protocol communication stacks. | Choose when application firmware fits within 16 KB and no additional TCPWM or analog resources are required. |
Compared with CY8C4025LQI-S402 and CY8C4014LQI-S402, the CY8C4025AXI-S402 offers the largest GPIO count (36), full LCD segment drive, and highest memory capacity - making it optimal for feature-rich, pin-flexible HMI designs where TQFP assembly is acceptable.
Availability
CY8C4025AXI-S402 is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMI interfaces, and medical device keypads requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for CY8C4025AXI-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, sensing, and microcontroller solutions for industrial, automotive, and IoT applications.
The PSoC™ 4000S product line targets cost-optimized, highly integrated mixed-signal MCUs for capacitive touch, motor control, and sensor fusion applications - emphasizing programmability, low-power operation, and rapid prototyping.
FAQ
What development tools are officially supported for CY8C4025AXI-S402?
Infineon officially supports ModusToolbox™ software (cross-platform, Eclipse-based) and PSoC™ Creator (Windows-only IDE). Both provide CAPSENSE™ tuning tools, TCPWM configurators, and SCB peripheral APIs. Hardware debugging uses MiniProg4 or any Arm® SWD-compliant debugger. Code examples and BSPs are hosted on Infineon's GitHub and included in both toolchains.
Does CY8C4025AXI-S402 support hardware encryption or secure boot?
No. CY8C4025AXI-S402 does not include hardware cryptographic accelerators, secure boot ROM, or flash lock bits beyond standard write protection. Security relies on firmware-level measures such as obfuscated keys and bootloader authentication. For secure boot requirements, consider Infineon's PSoC™ 6 series, which integrates ARM TrustZone and dedicated crypto engines.
Can the CAPSENSE™ block operate during Deep Sleep mode?
Yes. The CAPSENSE™ sigma-delta sensing block remains fully functional in Deep Sleep mode, drawing only 2.5 µA total system current. It supports low-power wake-up on touch event detection and retains calibrated baseline data in SRAM, enabling immediate responsiveness without full CPU wake-up overhead.
Is LCD segment drive capability available on all GPIO pins?
No. LCD segment drive is only available on specific GPIO pins designated in the datasheet's "LCD Pin Mapping" table (e.g., P0[0]–P0[3], P1[0]–P1[3], P2[0]–P2[3]). These pins support up to 24 common-backplane segments. General-purpose GPIOs outside this set cannot drive LCD segments, though they retain full CAPSENSE™ and analog functionality.
CY8C4025AXI-S402 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-LQFP
- 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 16x10b; D/A 2x7b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4025AXI-S402 FAQ
1.How can I place an order for CY8C4025AXI-S402 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4025AXI-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 CY8C4025AXI-S402 reliable?
The price and inventory of CY8C4025AXI-S402 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4025AXI-S402 is usually 5 days.
3.What payment methods are accepted for CY8C4025AXI-S402?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4025AXI-S402 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4025AXI-S402?
CY8C4025AXI-S402 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4025AXI-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 CY8C4025AXI-S402?
For technical support, including CY8C4025AXI-S402 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4025AXI-S402 requirements.
6.How does Aetrix verify that CY8C4025AXI-S402 is sourced from the original manufacturer or authorized distributors?
All CY8C4025AXI-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 CY8C4025AXI-S402 meets industry standards.
7.What is the process for return or replacement of CY8C4025AXI-S402?
All CY8C4025AXI-S402 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4025AXI-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 CY8C4025AXI-S402 part is unused and in its original packaging.
Return procedure for CY8C4025AXI-S402:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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