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Infineon Technologies CY8C4125LQI-S413
- Part No.:
- CY8C4125LQI-S413
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4125LQI-S413.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,450
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Product details
Overview
CY8C4125LQI-S413 from Infineon is a programmable 32-bit Arm® Cortex®-M0+ microcontroller with 48 MHz CPU, 64 KB flash, 8 KB SRAM, integrated CAPSENSE™ capacitive sensing, 12-bit 1-Msps SAR ADC, and three reconfigurable serial communication blocks (I²C/SPI/UART). It supports deep-sleep operation at 2.5 µA and delivers best-in-class SNR (>5:1) for water-tolerant touch interfaces in industrial HMI and consumer control panels.
For engineers reviewing the CY8C4125LQI-S413 datasheet, CY8C4125LQI-S413 pinout, CY8C4125LQI-S413 application, or CY8C4125LQI-S413 equivalent, key selection criteria include its reconfigurable analog/digital blocks, SmartSense auto-tuning for CAPSENSE™, TCPWM kill-signal triggering for motor safety, and 1.71–5.5 V wide-voltage operation across battery-powered and industrial supply rails.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with programmable analog (dual opamps, SAR ADC, IDACs, comparators) and digital (TCPWM, SCB, PLD) subsystems routed via automatic interconnect fabric. Its CAPSENSE™ sigma-delta engine operates independently of CPU load and supports hardware-accelerated signal averaging and automatic calibration.
Clocking is managed by multiple sources: ±2% IMO, 32 kHz ILO, and external WCO - enabling precise timing for PWM generation, UART baud rate accuracy, and low-power wake-up events. All GPIOs support configurable drive strength, slew rate, and dual-role assignment (e.g., analog input + CAPSENSE™ sensor + digital output).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz with single-cycle multiply - enables real-time control loops and deterministic interrupt latency ≤12 cycles. |
| Memory | 64 KB flash (with read accelerator) + 8 KB SRAM - supports firmware updates in-field and buffer-intensive sensor fusion without external memory. |
| ADC | 12-bit SAR ADC @ 1 Msps with channel sequencer and signal averaging - captures fast transients in motor current sensing or audio pre-processing. |
| CAPSENSE™ | Sigma-delta capacitive sensing with >5:1 SNR and SmartSense auto-tuning - eliminates manual calibration for production-line touch button deployment. |
| Power Modes | Deep Sleep @ 2.5 µA with operational analog blocks - sustains touch wake-up and temperature monitoring during battery standby for >1 year on coin cell. |
| Serial Interfaces | 3 × SCBs supporting concurrent I²C, SPI, UART - allows simultaneous sensor hub (I²C), display interface (SPI), and debug/OTA (UART) without resource contention. |
| PWM/Timing | 5 × 16-bit TCPWM blocks with center-aligned, quadrature decode, and comparator-triggered kill signals - meets functional safety requirements for BLDC motor gate drivers. |
Pinout & Package
This device is housed in a 44-lead TQFP package (10 mm × 10 mm, 0.8 mm pitch) with exposed thermal pad. All 36 GPIOs support programmable analog/digital/CAPSENSE™ functions, drive modes, and slew rates.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual 1.71–5.5 V supply domain with internal LDO regulation - accepts unregulated battery or industrial rail directly. |
| XRES | Active-low reset input | Asynchronous reset with internal pull-up; compatible with pushbutton or supervisor IC assertion. |
| SWDCK, SWDIO | ARM Serial Wire Debug interface | 2-pin debug port supporting programming, real-time trace, and breakpoint debugging without dedicated JTAG pins. |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO | Each pin configurable as CAPSENSE™ sensor, SAR ADC input, IDAC output, or TCPWM capture - no fixed peripheral pin binding required. |
| XTAL_IN/XTAL_OUT | 32 kHz watch crystal oscillator terminals | Supports precision RTC and low-power wake-up timing independent of main clock source. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable Analog Blocks | Dual opamps operate in Deep Sleep mode with selectable high-drive external or high-bandwidth internal modes - enables active filtering during ultra-low-power sensor acquisition. |
| Hardware-Accelerated CAPSENSE™ | Sigma-delta engine with automatic tuning (SmartSense) and >5:1 SNR - achieves robust touch detection through 3 mm glass or wet surfaces without firmware intervention. |
| Flexible Serial Connectivity | Three SCBs dynamically assignable to I²C, SPI, or UART - eliminates need for external level shifters or protocol bridges in multi-interface designs. |
| Programmable Digital Logic | PLD blocks perform Boolean logic on port inputs/outputs - implements custom glue logic (e.g., interrupt arbitration, status encoding) without CPU overhead. |
| Low-Power Timing | TCPWM blocks support pseudo-random PWM dithering and comparator-triggered kill signals - reduces EMI in motor drives and improves fault response time. |
Applications
| Industrial HMI Panels | Smart Home Appliances |
|---|---|
|
Use Scenario: Touch-enabled control panel for HVAC or PLC operator interface with glove/water resistance. IC Role / Device Role / Timing Role: Main MCU executing CAPSENSE™ scanning, sensor data aggregation, and RS-485 communication stack. Use Value: SmartSense auto-tuning ensures consistent button response across production units without factory calibration; 2.5 µA Deep Sleep extends battery life in wireless remote variants. |
Use Scenario: Touch-sensitive cooktop or washing machine control with proximity wake-up and LED feedback. IC Role / Device Role / Timing Role: Single-chip solution managing capacitive keys, LED dimming via TCPWM, and appliance state machine. Use Value: Integrated opamps buffer analog thermistor inputs; IDACs drive self-capacitance sensors for proximity detection - eliminating discrete analog front-end components. |
| Medical Patient Monitors | Motor Control Subsystems |
|
Use Scenario: Portable vital sign monitor with touch UI, temperature sensing, and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: System controller handling SAR ADC sampling of ECG/temperature, CAPSENSE™ UI, and UART-to-BLE bridge. Use Value: 12-bit SAR ADC with channel sequencer captures synchronized multi-sensor data; Deep Sleep mode maintains real-time clock and touch wake-up while drawing <3 µA. |
Use Scenario: Fan or pump driver with overcurrent protection, speed feedback, and touch-based configuration. IC Role / Device Role / Timing Role: Motor controller generating center-aligned PWM, decoding quadrature encoder, and triggering hardware kill on comparator fault. Use Value: TCPWM kill-signal path bypasses CPU to cut gate drive within 100 ns - satisfies IEC 61800-5-2 functional safety timing constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4126LQI-S423 | Same core and peripherals, but with 128 KB flash and 16 KB SRAM - no change in pinout or clocking. | Required for larger firmware images (e.g., BLE stack + GUI framework) where CY8C4125LQI-S413's 64 KB flash is insufficient. | Select when firmware size exceeds 55 KB after linker optimization and secure boot overhead. |
| STM32G071KBT6 | Arm Cortex-M0+, 64 KB flash, 20 KB SRAM, but lacks integrated CAPSENSE™ and programmable analog blocks. | Suitable for cost-sensitive applications needing only digital I/O and basic ADC, not capacitive touch or analog signal conditioning. | Choose only if CAPSENSE™, opamps, or SmartSense are unnecessary - requires external components to match CY8C4125LQI-S413's analog integration. |
Compared with CY8C4126LQI-S423, the CY8C4125LQI-S413 trades flash/SRAM headroom for lower BOM cost and identical footprint; versus STM32G071KBT6, it delivers full analog+touch integration in one die but at higher unit price and toolchain specificity.
Availability
CY8C4125LQI-S413 is available at Aetrix Electronics and suitable for industrial HMI, smart appliance control, portable medical devices, and motor subsystems requiring stable component supply across long-lifecycle programs.
Supply support for CY8C4125LQI-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 MCUs, and secure microcontrollers, with global manufacturing and quality certification to ISO 9001 and IATF 16949.
The PSoC™ 4100S product line targets cost-optimized, highly integrated embedded controllers for human interface, sensing, and motor control - emphasizing reconfigurable analog/digital resources and low-power operation without external components.
FAQ
Does CY8C4125LQI-S413 support USB device functionality?
No. This device does not include a USB PHY or USB controller. It relies on external USB-to-UART bridges (e.g., CP2102) or host-side USB enumeration for connectivity. The three SCBs support only I²C, SPI, and UART protocols - no native USB endpoint or descriptor handling capability is present in silicon or firmware libraries.
Can the SAR ADC sample multiple channels simultaneously?
No. The 12-bit SAR ADC is single-channel with a hardware channel sequencer that scans up to 32 inputs sequentially. It supports signal averaging per channel and differential/single-ended modes, but lacks true simultaneous sampling across multiple inputs - critical for phase-current measurement in three-phase motors requires external synchronized ADCs.
Is the CAPSENSE™ block certified for IEC 61000-4-6 conducted immunity?
Yes. Infineon provides CAPSENSE™ design guides and test reports confirming compliance with IEC 61000-4-6 Level 3 (10 V/m, 150 kHz–80 MHz) when implemented per layout recommendations (e.g., guard rings, shield traces, proper grounding). Certification applies to the analog front-end and firmware algorithms, not the bare die alone.
What debug interfaces are supported in production units?
SWD (Serial Wire Debug) is fully enabled on all production units via SWDCK/SWDIO pins. No debug disable fuse exists - the interface remains accessible for field firmware updates, diagnostics, and boundary scan testing throughout product lifetime, provided physical access and correct security policy configuration.
CY8C4125LQI-S413 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4100S
- 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:
- 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 Slope; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4125LQI-S413 FAQ
1.How can I place an order for CY8C4125LQI-S413 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4125LQI-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 CY8C4125LQI-S413 reliable?
The price and inventory of CY8C4125LQI-S413 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4125LQI-S413 is usually 5 days.
3.What payment methods are accepted for CY8C4125LQI-S413?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4125LQI-S413 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4125LQI-S413?
CY8C4125LQI-S413 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4125LQI-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 CY8C4125LQI-S413?
For technical support, including CY8C4125LQI-S413 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4125LQI-S413 requirements.
6.How does Aetrix verify that CY8C4125LQI-S413 is sourced from the original manufacturer or authorized distributors?
All CY8C4125LQI-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 CY8C4125LQI-S413 meets industry standards.
7.What is the process for return or replacement of CY8C4125LQI-S413?
All CY8C4125LQI-S413 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4125LQI-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 CY8C4125LQI-S413 part is unused and in its original packaging.
Return procedure for CY8C4125LQI-S413:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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