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Infineon Technologies CY8C4045LQI-S411T
- Part No.:
- CY8C4045LQI-S411T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY8C4045LQI-S411T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,980
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Product details
Overview
CY8C4045LQI-S411T 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. Used in touch-enabled industrial HMI and smart sensor nodes requiring low-power reconfigurable mixed-signal control.
For engineers reviewing the CY8C4045LQI-S411T datasheet, CY8C4045LQI-S411T pinout, CY8C4045LQI-S411T application, or CY8C4045LQI-S411T equivalent, key selection criteria include its programmable analog/digital routing, SmartSense auto-tuning for water-tolerant touch, dual SCB flexibility, TCPWM kill-signal triggering for motor safety, and WLCSP-25 package compatibility with space-constrained PCB layouts.
Technical Context
The device implements a single-layer AHB-Lite interconnect between Cortex-M0+ core, memory subsystem (32 KB flash + 4 KB SRAM), and peripherals including two low-power comparators active in Deep Sleep, a sigma-delta CAPSENSE™ v2 block achieving >5:1 SNR, and five TCPWM units supporting center-aligned PWM and comparator-triggered fault shutdown. Clocking includes IMO (±2%), ILO (32 kHz), and WCO support.
Analog resources comprise two IDACs usable on any GPIO for sensing or biasing, a single-slope 10-bit ADC function embedded in CAPSENSE™ block, and programmable CT/SC analog blocks. Digital logic uses programmable logic blocks (PLBs) for Boolean operations on port signals, while serial communication relies on two runtime-reconfigurable SCBs-each independently assignable as I²C master/slave, SPI master/slave, or UART.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time deterministic control with single-cycle multiply for motor or sensor fusion algorithms. |
| Memory | 32 KB flash (with read accelerator), 4 KB SRAM - sufficient for CAPSENSE™ firmware, TCPWM control loops, and dual-SCB protocol stacks without external memory. |
| Capacitive Sensing | CAPSENSE™ v2 with SmartSense auto-tuning and >5:1 SNR - delivers robust touch detection under wet conditions and eliminates manual calibration effort. |
| Serial Interfaces | 2 × SCBs, each configurable as I²C/SPI/UART - allows concurrent use of I²C for sensor hub and UART for debug or host interface without hardware multiplexing. |
| PWM & Timing | 5 × 16-bit TCPWM blocks with center-aligned, edge-aligned, and pseudo-random modes - supports precise motor phase control and LED dimming with hardware-triggered kill signals. |
| Power Modes | Deep Sleep at 2.5 µA (digital) + operational analog - enables battery-powered touch interfaces with multi-year operation on coin cells. |
| GPIO | Up to 36 pins across packages; all support CAPSENSE™, analog, or digital functions with programmable drive strength/slew rate - simplifies layout by eliminating dedicated analog/digital pin partitioning. |
Pinout & Package
CY8C4045LQI-S411T is housed in a 25-ball WLCSP (Wafer-Level Chip Scale Package) with 0.4 mm pitch, designed for ultra-compact PCB footprints and high-density routing. Ball assignment follows JEDEC MO-220 standard with VDDIO, VSS, SWDIO/SWCLK, reset, and configurable GPIO distributed across perimeter rows.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | General-purpose I/O with CAPSENSE™/analog/digital capability | Supports mutual/capacitive sensing, IDAC output, comparator input, or digital logic - no fixed-function pin constraints. |
| P1[0]–P1[7] | General-purpose I/O with LCD segment drive capability | Enables direct driving of up to 16-segment LCD without external driver IC - reduces BOM count in display-integrated devices. |
| SWDIO / SWCLK | ARM Serial Wire Debug interface | Provides full-chip programming, breakpoint debugging, and trace in production firmware - requires only two pins and no JTAG TAP controller. |
| VDDIO / VSS | I/O power supply and ground | Configurable 1.71–5.5 V range allows direct interfacing with 3.3 V sensors or 5 V actuators without level shifters. |
| XRES | External reset input | Active-low asynchronous reset with internal pull-up - ensures reliable startup after brown-out or ESD event without external RC network. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Blocks | CT and SC blocks configurable as op-amps, filters, or transimpedance amplifiers - enable custom signal conditioning for analog sensors without external components. |
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration that adapts to environmental drift and moisture - eliminates factory calibration steps and field recalibration. |
| Runtime-Reconfigurable SCBs | Each SCB dynamically switches between I²C/SPI/UART protocols via firmware - allows one peripheral to serve multiple communication roles across product variants. |
| TCPWM Fault Handling | Kill-input trigger from comparator output disables PWM outputs within one clock cycle - meets functional safety requirements for motor overcurrent protection. |
| Low-Power Comparators | Operate in Deep Sleep mode with <1 µA quiescent current - enables wake-on-event sensing (e.g., tamper detection) without waking CPU. |
Applications
| Industrial Touch HMI | Smart Sensor Node |
|---|---|
Use Scenario: Operator interface on PLC-mounted panel with glove-friendly touch buttons and status LEDs. IC Role / Device Role / Timing Role: Main MCU executing CAPSENSE™ scan, driving 8-segment LCD, managing UART diagnostics, and generating PWM for LED brightness control. Use Value: Single-chip integration eliminates separate touch controller and display driver, reducing layer count and assembly cost in sealed enclosures. |
Use Scenario: Battery-powered environmental monitor measuring temperature/humidity and reporting via I²C to gateway MCU. IC Role / Device Role / Timing Role: System-on-chip sensor aggregator with Deep Sleep wake-on-comparator, CAPSENSE™ for proximity-triggered wake, and dual SCB for sensor I²C and host UART. Use Value: 2.5 µA Deep Sleep + SmartSense extends battery life beyond 5 years while maintaining responsive wake latency. |
| Motor Control Interface | Consumer Appliance Panel |
Use Scenario: Washing machine control board requiring motor phase timing, overcurrent fault shutdown, and touch start/pause buttons. IC Role / Device Role / Timing Role: Real-time controller running TCPWM for 3-phase commutation, using comparator-triggered kill signal to disable gate drivers during stall detection. Use Value: Hardware-level fault response (<100 ns latency) meets IEC 60730 Class B safety requirements without external watchdog IC. |
Use Scenario: Microwave oven front panel with water-resistant touch keys, LED indicators, and buzzer tone generation. IC Role / Device Role / Timing Role: CAPSENSE™ v2 processor with >5:1 SNR for wet-finger operation, TCPWM for audible buzzer frequency control, and GPIO-driven LED current regulation. Use Value: Eliminates mechanical switches and discrete LED drivers, improving IPX4 reliability and reducing long-term contact wear failures. |
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 with 36 GPIOs - no WLCSP footprint or LCD drive capability. | Better suited for prototyping or higher-pin-count designs where board area is less constrained than thickness. | Select when needing more accessible debug/test points or thermal relief via exposed pad. |
| CY8C4146LQI-S412 | Higher-spec variant: 64 KB flash, 8 KB SRAM, additional SCB and TCPWM - same WLCSP-25 package and CAPSENSE™ v2. | Required for complex BLE coexistence stacks or multi-sensor fusion firmware exceeding 32 KB flash limit. | Choose when firmware growth headroom or dual-radio concurrency (e.g., BLE + proprietary 2.4 GHz) is needed. |
Compared with CY8C4045FNI-S402, the S411T offers superior space efficiency and integrated LCD drive; compared with CY8C4146LQI-S412, it trades flash/SRAM capacity for lower unit cost and identical form factor - making it optimal for cost-sensitive, size-constrained touch HMI designs.
Availability
CY8C4045LQI-S411T is available at Aetrix Electronics and suitable for industrial HMI, smart sensor nodes, motor control interfaces, and consumer appliance panels requiring stable component supply, long-lifecycle assurance, and qualified WLCSP packaging.
Supply support for CY8C4045LQI-S411T 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 connectivity solutions, with global R&D centers and ISO/TS 16949-certified manufacturing.
This part belongs to the PSoC™ 4000S product line - engineered for cost-sensitive, space-constrained embedded systems requiring reconfigurable analog/digital logic, robust capacitive touch, and low-power operation without external timing or interface ICs.
FAQ
Does CY8C4045LQI-S411T support USB connectivity?
No. The device does not include a USB PHY or USB controller. Communication is limited to the two SCBs configured as I²C, SPI, or UART. For USB host/device functionality, an external bridge IC (e.g., CP2102N) or migration to PSoC™ 4100S/4200S series is required.
Can CAPSENSE™ operate while the CPU is in Deep Sleep mode?
Yes. CAPSENSE™ v2 hardware block remains active in Deep Sleep mode and can perform autonomous scanning. Wake events (e.g., touch detection) trigger interrupt to wake the CPU, enabling sub-µA average current in touch-wait states.
What debug tools are compatible with CY8C4045LQI-S411T?
MiniProg4 and MiniProg3 programmers/debuggers fully support SWD-based programming and real-time debugging. Third-party tools compliant with ARM Serial Wire Debug standard-including Segger J-Link and ST-Link/V2 (with appropriate adapter)-also work without modification.
Is the WLCSP-25 package RoHS and REACH compliant?
Yes. CY8C4045LQI-S411T is manufactured per Infineon's qualified green packaging process, meeting RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with lead-free solderability and halogen-free substrate materials.
CY8C4045LQI-S411T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 24-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4000S
- Packaging:
- Tape & Reel (TR)
- 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-S411T FAQ
1.How can I place an order for CY8C4045LQI-S411T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4045LQI-S411T 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-S411T reliable?
The price and inventory of CY8C4045LQI-S411T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4045LQI-S411T is usually 5 days.
3.What payment methods are accepted for CY8C4045LQI-S411T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4045LQI-S411T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4045LQI-S411T?
CY8C4045LQI-S411T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4045LQI-S411T 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-S411T?
For technical support, including CY8C4045LQI-S411T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4045LQI-S411T requirements.
6.How does Aetrix verify that CY8C4045LQI-S411T is sourced from the original manufacturer or authorized distributors?
All CY8C4045LQI-S411T 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-S411T meets industry standards.
7.What is the process for return or replacement of CY8C4045LQI-S411T?
All CY8C4045LQI-S411T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4045LQI-S411T, 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-S411T part is unused and in its original packaging.
Return procedure for CY8C4045LQI-S411T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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