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Infineon Technologies CY8C4125LQI-S413T
- Part No.:
- CY8C4125LQI-S413T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4125LQI-S413T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,041
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Product details
Overview
CY8C4125LQI-S413T 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 drives LCD segments directly on GPIOs for human-interface applications.
For engineers reviewing the CY8C4125LQI-S413T datasheet, CY8C4125LQI-S413T pinout, CY8C4125LQI-S413T application, or CY8C4125LQI-S413T equivalent, key selection criteria include capacitive touch SNR (>5:1), SmartSense auto-tuning capability, TCPWM kill-signal triggering for motor control, and dual opamp operation in Deep Sleep mode.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with fully programmable analog (CTB opamps, SAR ADC, CSD sigma-delta engine) and digital (TCPWM, SCB, PLD) subsystems. Its clock system includes ±2% IMO, 32 kHz ILO, and WCO support - enabling precise timing across low-power and high-performance modes.
Analog resources are tightly coupled to GPIO: any pin can serve CAPSENSE™, analog input, or digital I/O with configurable drive strength and slew rate. The CSD block delivers >5:1 signal-to-noise ratio and water-tolerant touch performance without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz with single-cycle multiply - enables real-time control and firmware-based signal processing without external DSP. |
| Memory | 64 KB flash (with read accelerator) + 8 KB SRAM - supports complex embedded applications with bootloader, OTA updates, and sensor fusion buffers. |
| ADC | 12-bit SAR ADC @ 1 Msps with differential/single-ended modes and hardware sequencer - captures fast analog transients (e.g., motor current, audio envelope) with minimal CPU load. |
| CAPSENSE™ | Sigma-delta CSD with >5:1 SNR and SmartSense auto-tuning - eliminates manual calibration for production touch panels exposed to moisture or EMI. |
| Low-Power Mode | Deep Sleep at 2.5 µA with active opamps and comparators - sustains capacitive wake-up detection and analog monitoring while preserving battery life. |
| Serial Interfaces | 3 × SCBs supporting runtime-reconfigurable I²C/SPI/UART - allows dynamic peripheral assignment (e.g., one SCB as I²C master for sensors, another as UART for debug). |
| TCPWM Blocks | 5 × 16-bit Timer/Counter/PWM with center-aligned, edge-aligned, and pseudo-random modes - supports motor FOC, LED dimming, and encoder quadrature decoding. |
Pinout & Package
This device is housed in a 44-lead TQFP package (7 mm × 7 mm, 0.8 mm pitch) with 36 programmable GPIOs. All pins support multiple functions including CAPSENSE™, analog input/output, digital I/O, and serial interface signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Supports 1.71–5.5 V operation; decoupling required per Infineon layout guidelines for stable analog/digital coexistence. |
| P0[0]–P0[7], P1[0]–P1[7], P2[0]–P2[7], P3[0]–P3[7], P4[0]–P4[7], P5[0]–P5[3] | Programmable GPIO | Each pin configurable as CAPSENSE™ electrode, analog input, opamp output, SCB signal, or TCPWM output - no fixed-function pin constraints. |
| XRES | Active-low reset input | Asynchronous reset with internal pull-up; compatible with external pushbutton or supervisor IC assertion. |
| SWDCLK, SWDIO | Debug interface | Two-pin Serial Wire Debug port for programming and real-time trace - requires no dedicated UART or JTAG header. |
| XTAL_IN, XTAL_OUT | Watch crystal oscillator | Connects to 32.768 kHz crystal for RTC and low-power timing; supports automatic load capacitance tuning via firmware. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration that adapts electrode capacitance drift in real time - reduces firmware development effort and field failure rates. |
| Reconfigurable SCBs | Three independent serial blocks each capable of I²C master/slave, SPI master/slave, or UART TX/RX - eliminates need for external level shifters or protocol translators. |
| Deep Sleep analog retention | Opamps and comparators remain operational during Deep Sleep at 2.5 µA - enables always-on touch wake-up and analog threshold monitoring without full MCU wake. |
| Programmable drive modes | Each GPIO supports open-drain, strong, resistive pull-up/down, and high-slew configurations - simplifies interface to diverse peripherals (LEDs, buttons, sensors, displays). |
| LCD segment drive | Direct GPIO-based LCD segment driving up to 4×28 segments - removes need for external LCD controller in cost-sensitive HMI designs. |
Applications
| Home Appliance Control Panel | Industrial HMI Keypad |
|---|---|
|
Use Scenario: Touch-enabled oven control panel operating in humid kitchen environments with frequent condensation. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ scan, managing thermal feedback loop, and driving segmented LCD display. Use Value: SmartSense auto-tuning maintains reliable button detection despite water film; Deep Sleep mode extends battery backup runtime during standby. |
Use Scenario: Ruggedized factory-floor operator interface with metal bezel and ESD exposure. IC Role / Device Role / Timing Role: System controller handling touch input, RS-485 communication via SCB, and PWM-driven status LEDs. Use Value: >5:1 CAPSENSE™ SNR rejects EMI from nearby motors; programmable GPIO slew rates suppress radiated emissions per CISPR 25 Class 3. |
| Medical Patient Monitor Front Panel | Smart Thermostat Display |
|
Use Scenario: Clinical-grade bedside monitor requiring glove-compatible touch and low-power data logging. IC Role / Device Role / Timing Role: Real-time sensor aggregator (SAR ADC reads temperature/humidity), touch processor, and SPI-connected flash logger. Use Value: 12-bit SAR ADC provides 0.1°C resolution for thermistor inputs; Deep Sleep + active comparators enable wake-on-temp-threshold without CPU overhead. |
Use Scenario: Battery-powered HVAC thermostat with ambient light sensing and capacitive buttons. IC Role / Device Role / Timing Role: Main system controller running ModusToolbox™ CAPSENSE™ middleware, reading ambient light via IDAC-based photodiode circuit, and driving LCD. Use Value: Integrated IDACs eliminate external current sources for precision light sensing; 2.5 µA Deep Sleep extends 2xAA battery life beyond 2 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4126LQI-S433 | Same core and analog architecture but with 128 KB flash and 16 KB SRAM; identical 44L TQFP package and pinout. | Better suited for applications requiring larger firmware (e.g., BLE stack integration, multi-sensor fusion algorithms). | Select when future firmware expansion headroom or dual-bank flash for robust OTA updates is required. |
| CY8C4025LQI-S412 | Lower-cost variant with 32 KB flash, 4 KB SRAM, no CSD block, and only one SCB; same 44L TQFP footprint. | Targeted at non-touch applications like simple motor control or basic sensor nodes where CAPSENSE™ and extra memory are unnecessary. | Select when touch functionality is omitted and BOM cost reduction is prioritized over programmability headroom. |
Compared with CY8C4126LQI-S433, this part trades flash/SRAM capacity for lower unit cost while retaining full CAPSENSE™ and SCB functionality; compared with CY8C4025LQI-S412, it adds critical touch capability and communication flexibility at modest cost increase.
Availability
CY8C4125LQI-S413T is available at Aetrix Electronics and suitable for home appliance interfaces, industrial HMIs, medical front panels, and smart thermostat designs requiring stable component supply, long-term lifecycle support, and qualified automotive-grade traceability.
Supply support for CY8C4125LQI-S413T 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 global semiconductor leader headquartered in Munich, Germany, specializing in power systems, sensing, and microcontrollers for industrial, automotive, and IoT applications.
This device belongs to the PSoC™ 4100S product line - designed specifically for cost-sensitive, low-power embedded systems requiring integrated capacitive touch, analog signal conditioning, and flexible digital connectivity without external components.
FAQ
Does CY8C4125LQI-S413T support USB connectivity?
No, this device does not include a USB PHY or USB controller. Communication is limited to the three SCBs (I²C/SPI/UART) and SWD debug interface. For USB host/device functionality, pairing with an external USB-to-UART bridge or selecting a PSoC™ 4 family member with USBFS (e.g., CY8C4247LQI-BL483) is required.
What development tools are officially supported for this MCU?
Infineon officially supports ModusToolbox™ (v3.x+) and legacy PSoC™ Creator (v4.4) IDEs. Both provide CAPSENSE™ Tuner, TCPWM configurator, and SCB setup wizards. Hardware debugging requires KitProg3 or MiniProg4 programmers - no third-party JTAG adapters are certified for full feature access.
Can the SAR ADC perform simultaneous sampling across multiple channels?
No, the 12-bit SAR ADC uses a single conversion core with hardware channel sequencing. It supports rapid sequential sampling (up to 1 Msps aggregate) and signal averaging per channel, but true simultaneous sampling requires external analog multiplexing or a different device family (e.g., PSoC™ 6 with dual SAR).
Is the 44L TQFP package RoHS-compliant and halogen-free?
Yes, CY8C4125LQI-S413T is manufactured in a RoHS-compliant, halogen-free, and lead-free process. The 44L TQFP package meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) and is qualified for reflow soldering per IPC/JEDEC J-STD-020D. Full compliance documentation is available in Infineon's Q-00000000000000000000000000000000 document library.
CY8C4125LQI-S413T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4100S
- Packaging:
- Tape & Reel (TR)
- 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-S413T FAQ
1.How can I place an order for CY8C4125LQI-S413T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4125LQI-S413T 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-S413T reliable?
The price and inventory of CY8C4125LQI-S413T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4125LQI-S413T is usually 5 days.
3.What payment methods are accepted for CY8C4125LQI-S413T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4125LQI-S413T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4125LQI-S413T?
CY8C4125LQI-S413T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4125LQI-S413T 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-S413T?
For technical support, including CY8C4125LQI-S413T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4125LQI-S413T requirements.
6.How does Aetrix verify that CY8C4125LQI-S413T is sourced from the original manufacturer or authorized distributors?
All CY8C4125LQI-S413T 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-S413T meets industry standards.
7.What is the process for return or replacement of CY8C4125LQI-S413T?
All CY8C4125LQI-S413T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4125LQI-S413T, 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-S413T part is unused and in its original packaging.
Return procedure for CY8C4125LQI-S413T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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