My Inquiry
My Account
Infineon Technologies CY8C4045LQI-S413
- Part No.:
- CY8C4045LQI-S413
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4045LQI-S413.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,917
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C4045LQI-S413 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 TCPWM blocks. It operates from 1.71–5.5 V and supports Deep Sleep mode at 2.5 µA digital current. It targets embedded human-interface applications such as touch-enabled industrial HMI panels.
For engineers reviewing the CY8C4045LQI-S413 datasheet, CY8C4045LQI-S413 pinout, CY8C4045LQI-S413 application, or CY8C4045LQI-S413 equivalent, key selection criteria include CAPSENSE™ SNR (>5:1), programmable analog (IDACs, comparators), reconfigurable digital logic, low-power Deep Sleep capability, and compatibility with ModusToolbox™ and PSoC™ Creator toolchains.
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 system firmware. Its analog subsystem includes a sigma-delta capacitive sensing engine with hardware SmartSense tuning, two low-power comparators active in Deep Sleep, and two current DACs routable to any GPIO.
Digital resources comprise five 16-bit TCPWM blocks supporting center-aligned PWM, comparator-triggered kill signals for motor control safety, and two fully reconfigurable serial communication blocks (SCBs) that can be independently assigned as I²C, SPI, or UART at runtime without reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables deterministic real-time control with <100 ns interrupt latency |
| Flash / SRAM | 32 KB flash with read accelerator / 4 KB SRAM - supports firmware updates and local sensor data buffering |
| CAPSENSE™ SNR | >5:1 signal-to-noise ratio - ensures reliable touch detection under wet or noisy EMI conditions |
| Low-Power Mode | Deep Sleep at 2.5 µA digital current - extends battery life in portable touch interfaces |
| GPIO Count | Up to 36 programmable pins - all support CAPSENSE™, analog, or digital functions with configurable drive strength |
| Serial Peripherals | 2 × SCBs - each independently configurable as I²C, SPI, or UART, enabling dual-protocol connectivity |
| PWM Resources | 5 × 16-bit TCPWM blocks - support center-aligned, edge-aligned, and pseudo-random modulation for motor and lighting control |
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 supply | Accepts 1.71–5.5 V; powers digital logic, analog blocks, and GPIO drivers |
| VSS | Ground reference | Common return for analog/digital domains; requires separate AGND/DGND layout per design guidelines |
| P0[0]–P0[7] | Programmable GPIO port 0 | Support CAPSENSE™, analog input/output, or digital logic; configurable slew rate and drive strength |
| SWDCLK / SWDIO | ARM Serial Wire Debug interface | Enables full-chip programming, tracing, and real-time debugging without external emulators |
| XRES | External reset input | Active-low asynchronous reset; debounced internally; compatible with pushbutton or supervisor ICs |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CAPSENSE™ Engine | Sigma-delta modulator with automatic SmartSense tuning - eliminates manual calibration for production touch systems |
| Reconfigurable SCBs | Two independent serial blocks - reduce BOM count by eliminating dedicated protocol ICs in multi-interface designs |
| Deep Sleep Analog Operation | Comparators and IDACs remain active at 2.5 µA - enables wake-on-touch while preserving battery in always-on UIs |
| Programmable Digital Logic | Boolean logic on port inputs/outputs - implements glue logic or state machines without external gates or FPGA |
| LCD Segment Drive | GPIO pins support static/dynamic LCD segment driving - reduces need for external display controllers in simple HMI |
Applications
| Industrial HMI Panels | Smart Home Touch Controls |
|---|---|
Use Scenario: Wall-mounted touch interface for HVAC or lighting control in factory environments with EMI and humidity exposure. IC Role / Device Role / Timing Role: Primary MCU managing CAPSENSE™ buttons, local LED/PWM dimming, and RS-485 communication via SCB. Use Value: >5:1 CAPSENSE™ SNR ensures false-trigger immunity; Deep Sleep at 2.5 µA enables energy harvesting operation. | Use Scenario: Battery-powered smart switch with capacitive slider and status LEDs for residential lighting systems. IC Role / Device Role / Timing Role: Single-chip controller handling touch sensing, PWM dimming, BLE coexistence timing, and low-power sleep/wake cycles. Use Value: Integrated IDACs and SmartSense eliminate external calibration components; 36 GPIOs consolidate sensor, LED, and button routing. |
| Medical Device Keypads | Appliance Control Boards |
Use Scenario: Touch-sensitive front panel on portable diagnostic equipment requiring IEC 60601-1 compliance and wet-finger tolerance. IC Role / Device Role / Timing Role: Safety-critical UI controller with CAPSENSE™ validation, watchdog timer, and fail-safe PWM shutdown via TCPWM kill signals. Use Value: Hardware-based kill signal triggering ensures sub-microsecond response to fault conditions without firmware dependency. | Use Scenario: Washing machine main control board managing motor phase control, water-level sensing, and user interface. IC Role / Device Role / Timing Role: System-on-chip replacing discrete MCU + touch controller + PWM generator + communication IC. Use Value: Five TCPWM blocks enable simultaneous motor commutation, buzzer tone generation, and LED blinking - no resource contention. |
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 40-pin QFN package (6 × 6 mm) and no WCO oscillator | Lacks 32 kHz watch crystal oscillator - unsuitable for RTC-dependent timekeeping or low-power periodic wake-up | Select when board space is constrained and RTC functionality is handled externally |
| CY8C4146LQI-S433 | Higher flash (64 KB), added USBFS block, same 48-pin TQFP package | Includes USB 2.0 Full-Speed PHY - adds host/device capability but increases power in Deep Sleep (3.2 µA) | Select when USB connectivity is required and higher memory is needed for firmware features |
Compared with CY8C4045FNI-S402 and CY8C4146LQI-S433, the CY8C4045LQI-S413 balances compact TQFP packaging, integrated WCO, and optimal power/performance for cost-sensitive touch HMI designs without USB or extended memory needs.
Availability
CY8C4045LQI-S413 is available at Aetrix Electronics and suitable for industrial HMI panels, smart home touch controls, medical device keypads, and appliance control boards requiring stable component supply and long-term lifecycle support.
Supply support for CY8C4045LQI-S413 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 R&D and manufacturing infrastructure.
The PSoC™ 4000S product line delivers programmable mixed-signal MCUs optimized for capacitive touch, low-power embedded control, and rapid prototyping using schematic-driven development tools.
FAQ
What development tools are officially supported for CY8C4045LQI-S413?
Infineon officially supports both ModusToolbox™ (cross-platform, Eclipse-based) and PSoC™ Creator (Windows-only, schematic-driven IDE). Both provide full peripheral configuration, CAPSENSE™ tuning, and debug via SWD. MiniProg4 is the recommended programmer/debugger, and CY8CKIT-145-40XX serves as the reference evaluation kit.
Does CY8C4045LQI-S413 support hardware-accelerated cryptographic operations?
No. The CY8C4045LQI-S413 does not include dedicated cryptographic accelerators (e.g., AES, SHA, TRNG). Security relies on software libraries and flash protection mechanisms. For hardware crypto, consider Infineon's PSoC™ 6 series, which integrates ARM TrustZone and dedicated crypto engines.
Can all 36 GPIOs be used simultaneously for CAPSENSE™ sensing?
No. While all GPIOs are CAPSENSE™-capable, the number of simultaneous sensors is limited by the internal sigma-delta modulator resources and routing constraints. The datasheet specifies up to 24 self-capacitance or 12 mutual-capacitance sensors depending on configuration, with hardware SmartSense optimizing channel allocation.
Is the 32 kHz WCO oscillator included in CY8C4045LQI-S413 functional out-of-box?
Yes. The 32 kHz watch crystal oscillator (WCO) is integrated into the die and requires only an external 32.768 kHz crystal and two load capacitors (typically 12 pF). It is factory-trimmed and enabled by default in Deep Sleep mode, providing accurate timing for RTC and periodic wake-up without additional ICs.
CY8C4045LQI-S413 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-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:
- 34
- 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:
CY8C4045LQI-S413 FAQ
1.How can I place an order for CY8C4045LQI-S413 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4045LQI-S413 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-S413 reliable?
The price and inventory of CY8C4045LQI-S413 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4045LQI-S413 is usually 5 days.
3.What payment methods are accepted for CY8C4045LQI-S413?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4045LQI-S413 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4045LQI-S413?
CY8C4045LQI-S413 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4045LQI-S413 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-S413?
For technical support, including CY8C4045LQI-S413 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4045LQI-S413 requirements.
6.How does Aetrix verify that CY8C4045LQI-S413 is sourced from the original manufacturer or authorized distributors?
All CY8C4045LQI-S413 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-S413 meets industry standards.
7.What is the process for return or replacement of CY8C4045LQI-S413?
All CY8C4045LQI-S413 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4045LQI-S413, 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-S413 part is unused and in its original packaging.
Return procedure for CY8C4045LQI-S413:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C4045LQI-S413 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
