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Infineon Technologies CY8C4045LQI-S411
- Part No.:
- CY8C4045LQI-S411
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY8C4045LQI-S411.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,551
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Product details
Overview
CY8C4045LQI-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 1.71–5.5 V and supports Deep Sleep mode at 2.5 µA digital current. Used in touch-enabled human-machine interfaces for industrial control panels.
For engineers reviewing the CY8C4045LQI-S411 datasheet, CY8C4045LQI-S411 pinout, CY8C4045LQI-S411 application, or CY8C4045LQI-S411 equivalent, key selection criteria include CAPSENSE™ SNR (>5:1), programmable analog (IDACs, low-power comparators), TCPWM kill-signal triggering, and 48-pin TQFP package compatibility with PSoC™ Creator and ModusToolbox™ toolchains.
Technical Context
The device integrates a single-cycle multiply Arm® Cortex®-M0+ core with dedicated hardware acceleration for capacitive sigma-delta sensing (CAPSENSE™ v2), delivering >5:1 signal-to-noise ratio and water-tolerant operation. Its analog subsystem includes two current DACs (IDACs) configurable on any GPIO and two deep-sleep-capable comparators.
Digital resources comprise five reconfigurable TCPWM blocks supporting center-aligned PWM, edge-triggered counting, and comparator-based kill signals for motor control safety logic; plus two serial communication blocks (SCBs) that runtime-reconfigure between I²C, SPI, and UART protocols without firmware reload.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz with single-cycle multiply - enables deterministic real-time control and efficient firmware execution. |
| Memory | 32 KB flash (with read accelerator) + 4 KB SRAM - supports moderate embedded applications with fast code fetch and data buffering. |
| CAPSENSE™ | Sigma-delta architecture with >5:1 SNR and SmartSense auto-tuning - delivers robust touch performance under moisture or EMI stress. |
| Analog Peripherals | Two IDACs (up to 2 mA each) + two low-power comparators active in Deep Sleep - enables self-contained capacitive sensing and threshold monitoring without wake-up latency. |
| Digital Peripherals | Five 16-bit TCPWM blocks with kill-signal input; two SCBs supporting I²C/SPI/UART - allows motor timing control and multi-protocol connectivity in one chip. |
| Power Range | 1.71–5.5 V supply with 2.5 µA Deep Sleep current - suitable for battery-powered HMI and energy-constrained industrial nodes. |
| GPIO | Up to 36 programmable pins in 48-pin TQFP package; all support CAPSENSE™, analog, or digital functions - simplifies board layout and design reuse across variants. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O power supply | Accepts 1.71–5.5 V; powers digital logic, analog blocks, and GPIO drivers. |
| VSS | Digital ground reference | Primary return path for digital circuitry and SWD debug interface. |
| P0[0]–P0[7] | Programmable GPIO port 0 | Support CAPSENSE™, analog input/output, or digital logic; configurable drive strength and slew rate. |
| P1[0]–P1[7] | Programmable GPIO port 1 | Includes SCB0 SCL/SDA or MOSI/MISO/SCK pins depending on SCB configuration. |
| SWDCLK / SWDIO | Serial Wire Debug interface | Enables full-chip programming and real-time debugging using standard Arm® SWD protocol. |
| XRES | External reset input | Active-low asynchronous reset; debounced internally, compatible with pushbutton or supervisor ICs. |
| WCO_IN / WCO_OUT | 32.768 kHz watch crystal oscillator terminals | Supports precise RTC timing and low-power wake-up intervals independent of main clock. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Blocks | Two IDACs (0.125–2 mA range) and two low-power comparators usable in Deep Sleep - eliminate external analog components for touch and threshold detection. |
| CAPSENSE™ v2 Engine | Sigma-delta sensing with automatic SmartSense tuning and >5:1 SNR - reduces development time for moisture-resistant touch interfaces. |
| Reconfigurable TCPWM | Five independent 16-bit timers supporting center-aligned PWM and comparator-triggered kill signals - meets functional safety requirements in motor drive timing paths. |
| Runtime-Reconfigurable SCBs | Two serial blocks dynamically switch between I²C, SPI, and UART modes via firmware - enables flexible peripheral integration without hardware changes. |
| Low-Power Operation | Deep Sleep mode draws only 2.5 µA digital current while maintaining analog functionality - extends battery life in portable HMIs. |
Applications
| Industrial HMI Panels | Smart Home Touch Controls |
|---|---|
Use Scenario: Capacitive touch buttons and sliders on factory operator panels exposed to dust, oil, or condensation. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, managing display updates via GPIO-driven LCD segments, and communicating with PLC via UART. Use Value: Water-tolerant sigma-delta sensing and SmartSense auto-calibration ensure reliable touch response without manual recalibration during maintenance cycles. | Use Scenario: Wall-mounted thermostat with glass-front touch interface and BLE gateway connectivity. IC Role / Device Role / Timing Role: System controller handling touch input, temperature ADC sampling, and UART-to-BLE bridge via SCB1 configured as UART. Use Value: Integrated IDACs and low-power comparators enable always-on touch wake-up with sub-3 µA sleep current, extending coin-cell battery life beyond 2 years. |
| Motor Drive Control Boards | Medical Device User Interfaces |
Use Scenario: Compact BLDC motor driver with integrated safety logic and front-panel controls. IC Role / Device Role / Timing Role: Timing controller generating center-aligned PWM for gate drivers and monitoring overcurrent via comparator-triggered TCPWM kill signals. Use Value: Hardware-enforced kill signal propagation eliminates software latency in fault response, meeting IEC 61800-5-2 functional safety requirements. | Use Scenario: Portable diagnostic device with sealed touch interface and low-noise analog front-end. IC Role / Device Role / Timing Role: Main controller running CAPSENSE™ for glove-compatible touch, reading sensor data via internal 10-bit ADC, and logging to flash. Use Value: Single-chip integration of touch, timing, and communication reduces BOM count and EMI risk in Class II medical equipment. |
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 |
|---|---|---|---|
| CY8C4045FNI-S402 | Same core and peripherals but in 40-pin QFN package; lacks WCO pins and has fewer GPIOs (28 vs 36). | Preferred for space-constrained designs where external RTC is used and touch channel count is lower. | Select when footprint size and cost outweigh need for crystal-based RTC and full GPIO count. |
| CY8C4146LQI-S433 | Higher memory (64 KB flash, 8 KB SRAM), adds USBFS block and more TCPWMs; same 48-pin TQFP package. | Required for USB-connected devices or applications needing larger firmware image and enhanced timing resources. | Choose when future firmware scalability, USB host/device capability, or additional PWM channels are mandatory. |
Compared with CY8C4045FNI-S402, the CY8C4045LQI-S411 provides full RTC support and higher GPIO count in TQFP; versus CY8C4146LQI-S433, it trades memory and USB for lower cost and identical CAPSENSE™ performance-ideal for cost-sensitive, touch-centric industrial HMIs.
Availability
CY8C4045LQI-S411 is available at Aetrix Electronics and suitable for industrial HMI panels, smart home touch controls, motor drive control boards, and medical device user interfaces requiring stable component supply and long-term production continuity.
Supply support for CY8C4045LQI-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 MCUs, and secure embedded systems, with global R&D and manufacturing infrastructure.
The PSoC™ 4000S product line targets cost-optimized, touch-enabled embedded controllers-designed for rapid development of robust human-machine interfaces with minimal external components.
FAQ
Does CY8C4045LQI-S411 support USB connectivity?
No. This part lacks a USBFS peripheral block. USB functionality requires higher-tier PSoC™ 4 variants such as CY8C4146LQI-S433 or PSoC™ 6 devices. The CY8C4045LQI-S411 relies on SCBs for UART, I²C, or SPI communication only.
What development tools are officially supported for CY8C4045LQI-S411?
Infineon officially supports both ModusToolbox™ (cross-platform, Eclipse-based) and PSoC™ Creator (Windows-only, schematic-driven). Both provide full CAPSENSE™ configuration, TCPWM setup, and SCB peripheral initialization with validated code examples and BSPs.
Can CAPSENSE™ operate reliably through 2 mm thick glass overlay?
Yes. With proper electrode design and SmartSense auto-tuning, CAPSENSE™ v2 achieves >5:1 SNR and supports overlays up to 3 mm thick. Performance depends on trace geometry, shield layer implementation, and firmware calibration-not just raw thickness.
Is the 48-pin TQFP package RoHS-compliant and halogen-free?
Yes. The CY8C4045LQI-S411 uses a lead-free, RoHS-compliant 48-pin TQFP package (JEDEC MO-220) with halogen-free molding compound, meeting IPC/JEDEC J-STD-020 moisture sensitivity level 3 and JEDEC Level 3 reflow profile requirements.
CY8C4045LQI-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
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4045LQI-S411 FAQ
1.How can I place an order for CY8C4045LQI-S411 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4045LQI-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 CY8C4045LQI-S411 reliable?
The price and inventory of CY8C4045LQI-S411 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4045LQI-S411 is usually 5 days.
3.What payment methods are accepted for CY8C4045LQI-S411?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4045LQI-S411 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4045LQI-S411?
CY8C4045LQI-S411 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4045LQI-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 CY8C4045LQI-S411?
For technical support, including CY8C4045LQI-S411 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4045LQI-S411 requirements.
6.How does Aetrix verify that CY8C4045LQI-S411 is sourced from the original manufacturer or authorized distributors?
All CY8C4045LQI-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 CY8C4045LQI-S411 meets industry standards.
7.What is the process for return or replacement of CY8C4045LQI-S411?
All CY8C4045LQI-S411 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4045LQI-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 CY8C4045LQI-S411 part is unused and in its original packaging.
Return procedure for CY8C4045LQI-S411:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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