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Infineon Technologies CY8C4045LQS-S411
- Part No.:
- CY8C4045LQS-S411
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY8C4045LQS-S411.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,672
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Product details
Overview
CY8C4045LQS-S411 from Infineon is an AEC-Q100 qualified automotive-grade PSoC™ 4000S microcontroller based on Arm® Cortex®-M0+ CPU, operating at up to 48 MHz with 32 KB flash and 4 KB SRAM. It integrates CAPSENSE™ capacitive sensing, two low-power comparators, two IDACs, five TCPWM blocks, and two reconfigurable SCBs supporting I²C/SPI/UART. Used in automotive body electronics for touch-enabled control panels requiring robust water-tolerant sensing and deep-sleep operation.
For engineers reviewing the CY8C4045LQS-S411 datasheet, CY8C4045LQS-S411 pinout, CY8C4045LQS-S411 application, or CY8C4045LQS-S411 equivalent, key selection criteria include AEC-Q100 Grade S (–40°C to +105°C), programmable analog/digital routing, CSD-based SNR >5:1, Deep Sleep current of 2.5 µA, and SWD debug interface compatibility with Arm-standard tools.
Technical Context
The device implements a single-layer AHB-Lite interconnect between Cortex-M0+ core, memory subsystem (32 KB flash with read accelerator, 4 KB SRAM, 8 KB ROM), and peripherals including two SCBs, five TCPWM blocks, and CAPSENSE™ sigma-delta sensing engine. Clocking relies on IMO (internal main oscillator), ILO (internal low-speed oscillator), and optional WCO for precision timing.
Analog functionality is centered on the capacitance sensing block (CSD) delivering >5:1 SNR and hardware-accelerated smart tuning, supported by two programmable IDACs and dual low-power comparators operational in Deep Sleep mode - enabling always-on touch wake-up with sub-µA system-level power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time deterministic control in automotive body modules. |
| Flash / SRAM | 32 KB flash with read accelerator / 4 KB SRAM - supports firmware updates and runtime data buffering without external memory. |
| Operating Voltage | 1.71 V to 5.5 V - compatible with wide automotive battery rail variations including cold-crank conditions. |
| Temperature Grade | AEC-Q100 S-Grade (–40°C to +105°C) - certified for under-hood and dashboard-mounted automotive applications. |
| Deep Sleep Current | 2.5 µA digital system current - enables multi-year battery life in always-listening touch interfaces. |
| CAPSENSE™ SNR | >5:1 signal-to-noise ratio - ensures reliable touch detection through overlay materials and under wet conditions. |
| TCPWM Blocks | Five 16-bit timer/counter/PWM units - support motor control, LED dimming, and encoder interfacing with comparator-triggered kill signals. |
Pinout & Package
Package: 40-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | GPIO Port 0 pins | Support CAPSENSE™, analog input, IDAC output, or digital I/O; programmable drive strength/slew rate. |
| P1[0]–P1[7] | GPIO Port 1 pins | Same functionality as P0; enable flexible routing for mixed-signal signal paths and LCD segment drive. |
| P2[0]–P2[7] | GPIO Port 2 pins | Include dedicated SWDIO/SWCLK for debug; support high-speed digital communication and PWM outputs. |
| P3[0]–P3[7] | GPIO Port 3 pins | Support analog multiplexing and CSD shield connections; configurable as low-power comparators inputs. |
| VDD / VSS | Power supply / Ground | Dual VDD/VSS pairs per side ensure stable power delivery and noise isolation for analog/digital domains. |
| XRES | External reset input | Active-low asynchronous reset with internal pull-up; meets automotive reset timing requirements. |
| WCO_IN / WCO_OUT | Watch Crystal Oscillator terminals | Support 32.768 kHz crystal for RTC and low-power timing; optional for systems requiring precise sleep/wake cycles. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Routing | Capacitance sensing block (CSD) connects to any GPIO via analog matrix - eliminates fixed pin constraints for layout-flexible touch designs. |
| Hardware Smart Tuning | Automatic CSD calibration adjusts IDAC current and integration time in real time - maintains SNR >5:1 across temperature, voltage, and overlay thickness variation. |
| Reconfigurable SCBs | Two serial communication blocks dynamically switch between I²C, SPI, and UART protocols at runtime - reduces BOM count in multi-interface automotive nodes. |
| Deep Sleep with Active Analog | Low-power comparators and CSD remain functional while CPU and digital logic are powered down - enables wake-on-touch with 2.5 µA total system current. |
| SWD Debug Interface | Standard Arm Serial-Wire Debug with full chip visibility - supports production-line programming and in-system debugging without external pods or emulators. |
Applications
| Automotive Door Control Panel | Smart HVAC Touch Interface |
|---|---|
Use Scenario: Capacitive touch buttons integrated into vehicle door trim for window, mirror, and lock control. IC Role / Device Role / Timing Role: MCU host running CAPSENSE™ firmware with real-time touch response and LIN/CAN gateway functions via SCB. Use Value: Water-tolerant CSD (>5:1 SNR) prevents false triggers during rain exposure; Deep Sleep mode extends battery backup runtime during vehicle off-state. | Use Scenario: Dashboard-mounted climate control panel with slider and button touch zones, backlight dimming, and fan speed PWM. IC Role / Device Role / Timing Role: Central controller managing touch UI, 16-bit TCPWM for LED dimming and motor control, and I²C communication with temperature sensors. Use Value: Five TCPWM blocks enable simultaneous independent control of multiple fans and LEDs; programmable drive modes reduce EMI in sensitive cabin environment. |
| Steering Wheel Touch Controls | Automotive Lighting Module |
Use Scenario: Embedded touch-sensitive zones on steering wheel for audio, cruise, and phone controls with haptic feedback. IC Role / Device Role / Timing Role: Low-latency touch processor with comparator-triggered kill signals for safety-critical interrupt handling. Use Value: Dual low-power comparators operate in Deep Sleep to detect touch wake events within 100 µs; AEC-Q100 S-Grade ensures reliability at +105°C ambient. | Use Scenario: Interior ambient lighting module with RGB LED control, capacitive touch dimmer, and CAN bus status reporting. IC Role / Device Role / Timing Role: Mixed-signal controller executing CSD-based dimmer, three-channel PWM for RGB mixing, and SCB-based CAN transceiver interface. Use Value: All 34 GPIOs support both CAPSENSE™ and PWM - eliminates need for discrete touch and LED driver ICs, reducing PCB area and component count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4045FNI-S402 | Same PSoC™ 4000S core but 48-pin QFN package; no WCO pins; 24 GPIOs instead of 34. | Limited pin count restricts multi-peripheral integration; lacks crystal oscillator support for RTC. | Select when footprint space is constrained and RTC functionality is unnecessary. |
| SPC560B50L5 | 32-bit Power Architecture MCU; 64 KB flash; no integrated CAPSENSE™; requires external touch controller. | Higher performance for complex motor control, but adds BOM cost and design complexity for touch interfaces. | Prefer for engine management or transmission control where touch is not required. |
Compared with CY8C4045FNI-S402 and SPC560B50L5, CY8C4045LQS-S411 uniquely combines AEC-Q100-certified capacitive sensing, 34-GPIO flexibility, and Deep Sleep analog operation - making it optimal for cost-sensitive, space-constrained automotive HMI nodes requiring integrated touch and control.
Availability
CY8C4045LQS-S411 is available at Aetrix Electronics and suitable for automotive door modules, HVAC interfaces, steering wheel controls, and interior lighting systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for CY8C4045LQS-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 AG is a German semiconductor manufacturer specializing in power management, automotive MCUs, and security solutions, with global R&D and manufacturing infrastructure.
CY8C4045LQS-S411 belongs to the PSoC™ 4000S family - designed specifically for automotive body electronics requiring integrated mixed-signal programmability, AEC-Q100 compliance, and ultra-low-power touch HMI capabilities.
FAQ
Is CY8C4045LQS-S411 pin-compatible with other PSoC™ 4000S devices?
No. CY8C4045LQS-S411 uses a 40-pin QFN package with specific pin assignments for WCO, SWD, and analog routing. While functionally aligned with the PSoC™ 4000S family, pin mapping differs from 24-pin QFN or 28-pin SSOP variants due to package-specific I/O matrix configuration and peripheral placement.
Does CY8C4045LQS-S411 support CAN communication natively?
No. CY8C4045LQS-S411 does not integrate a CAN controller or physical layer. It supports I²C, SPI, and UART via its two SCBs. CAN connectivity requires an external transceiver paired with UART-based protocol stack implementation or use of a companion CAN-enabled MCU in a multi-chip architecture.
What development tools are officially supported for CY8C4045LQS-S411?
Infineon officially supports PSoC™ Creator IDE (legacy) and ModusToolbox™ for CY8C4045LQS-S411. Both provide schematic-based design entry, CAPSENSE™ tuner integration, TCPWM configuration GUI, and SWD-based programming/debug using standard CMSIS-DAP or Segger J-Link probes - no proprietary hardware required.
Can the internal oscillators meet automotive timing accuracy requirements without an external crystal?
Yes. The IMO provides ±2% accuracy over temperature and voltage, sufficient for most automotive body control functions. For RTC or low-jitter PWM applications, the WCO (32.768 kHz) is recommended - and CY8C4045LQS-S411 includes dedicated WCO_IN/WCO_OUT pins to support this option with <±20 ppm stability.
CY8C4045LQS-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:
- 48MHz
- 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 SAR; D/A 2x7b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
CY8C4045LQS-S411 FAQ
1.How can I place an order for CY8C4045LQS-S411 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4045LQS-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 CY8C4045LQS-S411 reliable?
The price and inventory of CY8C4045LQS-S411 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4045LQS-S411 is usually 5 days.
3.What payment methods are accepted for CY8C4045LQS-S411?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4045LQS-S411 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4045LQS-S411?
CY8C4045LQS-S411 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4045LQS-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 CY8C4045LQS-S411?
For technical support, including CY8C4045LQS-S411 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4045LQS-S411 requirements.
6.How does Aetrix verify that CY8C4045LQS-S411 is sourced from the original manufacturer or authorized distributors?
All CY8C4045LQS-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 CY8C4045LQS-S411 meets industry standards.
7.What is the process for return or replacement of CY8C4045LQS-S411?
All CY8C4045LQS-S411 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4045LQS-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 CY8C4045LQS-S411 part is unused and in its original packaging.
Return procedure for CY8C4045LQS-S411:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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