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Infineon Technologies CY8C4025LQI-S411
- Part No.:
- CY8C4025LQI-S411
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY8C4025LQI-S411.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,830
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Product details
Overview
CY8C4025LQI-S411 from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller with 48 MHz CPU, 32 KB flash, 4 KB SRAM, integrated CAPSENSE™ capacitive sensing, two SCBs supporting I²C/SPI/UART, and five 16-bit TCPWM blocks. It operates from 1.71 V to 5.5 V and supports Deep Sleep mode at 2.5 µA system current. It is used in touch-enabled human-machine interfaces for industrial control panels.
For engineers reviewing the CY8C4025LQI-S411 datasheet, CY8C4025LQI-S411 pinout, CY8C4025LQI-S411 application, or CY8C4025LQI-S411 equivalent, key selection criteria include CAPSENSE™ SNR performance (>5:1), programmable analog (IDACs, comparators), TCPWM kill-signal triggering, and dual SCB reconfigurability across I²C/SPI/UART protocols.
Technical Context
The device integrates a single-cycle multiply Arm® Cortex®-M0+ core with tightly coupled flash read accelerator and 8 KB ROM containing boot and PDL initialization code. System-level resources include a single-layer AHB interconnect, NVIC with IRQMUX, and SWD debug interface fully compatible with industry-standard tools.
Analog subsystem includes a capacitance-sensing sigma-delta ADC, two low-power comparators active in Deep Sleep, and two current DACs routable to any GPIO. Digital subsystem features five TCPWM blocks supporting center-aligned PWM, pseudo-random modulation, and comparator-triggered kill signals for motor control safety logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz with single-cycle multiply - enables deterministic real-time control loops without software multiplication overhead. |
| Memory | 32 KB flash (with read accelerator) + 4 KB SRAM - supports medium-complexity firmware with fast instruction fetch and data buffering. |
| CAPSENSE™ | Sigma-delta architecture with >5:1 SNR and water tolerance - delivers robust touch detection in humid or wet environments without shielding. |
| TCPWM Blocks | Five 16-bit timer/counter/PWM units - provide flexible timing generation including center-aligned PWM and hardware-triggered fault shutdown. |
| SCBs | Two serial communication blocks, each configurable as I²C, SPI, or UART - allows dynamic protocol assignment per peripheral without pin remapping. |
| Low-Power Mode | Deep Sleep with 2.5 µA digital current and operational comparators - enables always-on capacitive wake-up with sub-millisecond response. |
| Supply Range | 1.71 V to 5.5 V - supports direct connection to Li-ion, USB, or industrial 3.3/5 V rails without external regulators. |
Pinout & Package
CY8C4025LQI-S411 is housed in a 40-pin QFN package (6 × 6 mm, 0.5 mm pitch) with exposed thermal pad. All 36 GPIOs support programmable drive modes, slew rates, and CAPSENSE™/analog/digital functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply input | Accepts 1.71–5.5 V; powers digital core, SRAM, and most peripherals. |
| VSS | Ground reference | Common return path for all analog/digital circuits; must be low-impedance for CAPSENSE™ noise immunity. |
| P0[0]–P0[7] | Port 0 GPIOs | Support CAPSENSE™, analog input/output, digital logic, and LCD segment drive; individually configurable. |
| SWDCLK / SWDIO | Serial Wire Debug interface | Enable full-chip programming and real-time debugging using standard Arm® SWD protocol; no external emulator required. |
| XRES | External reset input | Active-low asynchronous reset; debounced internally; overrides all power modes. |
| WCO_IN / WCO_OUT | 32.768 kHz watch crystal oscillator terminals | Provide precise low-power timing for RTC and Deep Sleep wake-up intervals. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning and compensates for environmental drift in production. |
| Programmable analog routing | IDACs and comparators can be connected to any GPIO via internal switch matrix - enables flexible sensor interface design without PCB redesign. |
| Reconfigurable SCBs | Each SCB dynamically switches between I²C master/slave, SPI master/slave, or UART TX/RX - reduces BOM count and simplifies firmware updates. |
| Kill-signal PWM triggering | TCPWM outputs can be forced to safe state within one clock cycle upon comparator threshold violation - meets functional safety requirements for motor drives. |
| Deep Sleep with analog retention | Comparators remain active and monitor inputs while CPU and SRAM are powered down - enables ultra-low-power wake-on-touch capability. |
Applications
| Industrial HMI Panels | Smart Home Touch Controls |
|---|---|
Use Scenario: Touch-sensitive operator interface on factory HMIs exposed to dust, moisture, and ESD. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, managing display refresh via GPIO-driven LCD segments, and communicating with PLC over UART. Use Value: >5:1 SNR and water tolerance eliminate false triggers; Deep Sleep at 2.5 µA extends battery life in wireless variants. | Use Scenario: Wall-mounted light/dimmer controls with gesture recognition and multi-button proximity sensing. IC Role / Device Role / Timing Role: Standalone touch controller interfacing to lighting driver ICs via I²C and reporting status via UART to hub. Use Value: SmartSense auto-calibration ensures consistent button response across temperature/humidity ranges without field service. |
| Medical Device Keypads | Appliance Control Boards |
Use Scenario: Sealed front-panel keypad on infusion pumps requiring IP65-rated touch operation and fail-safe shutdown. IC Role / Device Role / Timing Role: Safety-critical CAPSENSE™ processor with TCPWM kill-signal output tied to motor driver enable lines. Use Value: Comparator-triggered PWM shutdown responds in <100 ns - exceeds IEC 60601-1 reaction time requirements. | Use Scenario: Oven/microwave control board with rotary encoder emulation, LED indicators, and buzzer tone generation. IC Role / Device Role / Timing Role: Main system controller running real-time cooking logic, driving 7-segment displays via GPIO, and generating audio tones using TCPWM. Use Value: Five TCPWM blocks allow concurrent tone generation, display multiplexing, and fan speed control without CPU load. |
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-S412 | Same die, different factory-programmed trim values for IMO accuracy (±1.5% vs ±2%) and flash security settings. | Requires identical PCB and firmware; selected when tighter clock tolerance or enhanced flash lock is mandated by certification. | Drop-in replacement only if IMO accuracy or security policy matches design requirements. |
| STM32G031K8T6 | No integrated CAPSENSE™; requires external R-C network and software-based touch algorithm; lower analog integration (no IDACs/comparators in Deep Sleep). | Suitable for cost-sensitive non-touch applications; lacks hardware-accelerated touch and analog retention in low-power modes. | Choose only when touch performance is secondary and BOM cost dominates design constraints. |
Compared with CY8C4025LQI-S411, the S412 offers identical functionality with tighter IMO tolerance and enhanced flash protection, while the STM32G031K8T6 trades CAPSENSE™ and low-power analog capability for lower unit cost and broader ecosystem tooling.
Availability
CY8C4025LQI-S411 is available at Aetrix Electronics and suitable for industrial HMI panels, smart home touch controls, and medical device keypads requiring stable component supply and long-term lifecycle support.
Supply support for CY8C4025LQI-S411 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, industrial, and IoT solutions, with global manufacturing and R&D infrastructure.
CY8C4025LQI-S411 belongs to the PSoC™ 4000S product line, designed specifically for cost-optimized, touch-enabled embedded systems requiring integrated analog signal conditioning and reconfigurable digital logic in compact packages.
FAQ
What development environments support CY8C4025LQI-S411?
CY8C4025LQI-S411 is supported by both ModusToolbox™ (cross-platform, Eclipse-based, CLI-driven) and PSoC™ Creator (Windows-only, schematic-driven IDE). ModusToolbox™ provides peripheral configurators and PDL libraries; PSoC™ Creator offers drag-and-drop component placement and automatic analog/digital routing. Both include CAPSENSE™ tuning tools and TCPWM configuration wizards.
Does CY8C4025LQI-S411 support hardware-based touch authentication?
No. CY8C4025LQI-S411 does not include cryptographic accelerators, secure boot, or tamper-detection circuitry. Its CAPSENSE™ implementation supports proximity, gesture, and button sensing but lacks built-in mechanisms for biometric verification or encrypted touch session keys. Authentication must be implemented externally or in software using the Arm® M0+ core and external secure element.
Can the two SCBs operate simultaneously as different protocols?
Yes. Each SCB is independently configurable: one can run as I²C master while the other operates as SPI slave, or both can function as UARTs with separate baud rates. Configuration is done at runtime via PDL API calls or ModusToolbox™ configurator-generated code, enabling dynamic protocol switching without reset or pin remapping.
What is the maximum operating temperature for continuous Deep Sleep mode?
CY8C4025LQI-S411 maintains Deep Sleep functionality up to +85 °C ambient, with 2.5 µA system current specified across the full industrial temperature range (–40 °C to +85 °C). The comparators and CAPSENSE™ block remain fully operational in this mode, enabling reliable wake-on-touch in high-temperature enclosures such as industrial control cabinets.
CY8C4025LQI-S411 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 24-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:
- 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 1x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4025LQI-S411 FAQ
1.How can I place an order for CY8C4025LQI-S411 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4025LQI-S411 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-S411 reliable?
The price and inventory of CY8C4025LQI-S411 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4025LQI-S411 is usually 5 days.
3.What payment methods are accepted for CY8C4025LQI-S411?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4025LQI-S411 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4025LQI-S411?
CY8C4025LQI-S411 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4025LQI-S411 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-S411?
For technical support, including CY8C4025LQI-S411 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4025LQI-S411 requirements.
6.How does Aetrix verify that CY8C4025LQI-S411 is sourced from the original manufacturer or authorized distributors?
All CY8C4025LQI-S411 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-S411 meets industry standards.
7.What is the process for return or replacement of CY8C4025LQI-S411?
All CY8C4025LQI-S411 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4025LQI-S411, 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-S411 part is unused and in its original packaging.
Return procedure for CY8C4025LQI-S411:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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