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Infineon Technologies CY8C4124LQI-S412
- Part No.:
- CY8C4124LQI-S412
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-UFQFN Exposed Pad
- Datasheet:
-
CY8C4124LQI-S412.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,487
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Product details
Overview
CY8C4124LQI-S412 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, and reconfigurable analog/digital blocks. It supports deep-sleep operation at 2.5 µA, features three SCB serial interfaces (I²C/SPI/UART), five TCPWM timers, and operates across 1.71–5.5 V for embedded human-interface and industrial control applications.
For engineers reviewing the CY8C4124LQI-S412 datasheet, CY8C4124LQI-S412 pinout, CY8C4124LQI-S412 application, or CY8C4124LQI-S412 equivalent, key selection considerations include its 36 GPIO with CAPSENSE™/analog/digital flexibility, SmartSense auto-tuning, 12-bit SAR ADC (1 Msps), and PSoC™ 4100S platform compatibility for scalable firmware reuse.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with programmable analog (two opamps, 12-bit SAR ADC, two IDACs, low-power comparators) and digital (TCPWM, SCB, PLD) subsystems. All analog peripherals remain functional in Deep Sleep mode, enabling always-on touch and sensor monitoring.
Its clock system includes ±2% IMO, 32 kHz ILO, and WCO support; programmable GPIO drive modes and slew rates allow precise signal integrity control per pin. The CAPSENSE™ sigma-delta engine delivers >5:1 SNR and water-tolerant touch performance without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz - single-cycle multiply enables real-time control math without software overhead. |
| Memory | 64 KB flash + 8 KB SRAM - sufficient for complex CAPSENSE™ + communication stacks with field-upgradable firmware. |
| ADC | 12-bit SAR, 1 Msps - supports high-resolution analog sensor acquisition with hardware channel sequencing and averaging. |
| Capacitive Sensing | CAPSENSE™ sigma-delta with SmartSense auto-tuning - eliminates manual calibration and maintains robustness against moisture and EMI. |
| Low-Power Mode | Deep Sleep at 2.5 µA - analog blocks (opamps, comparators, CSD) remain active for wake-on-touch or sensor-triggered wake-up. |
| Serial Interfaces | 3 × SCBs - runtime-reconfigurable as I²C, SPI, or UART, enabling flexible peripheral connectivity without hardware changes. |
| Timers | 5 × 16-bit TCPWM blocks - support center-aligned PWM for motor control, quadrature decoding, and comparator-triggered kill signals. |
Pinout & Package
Package: 44-lead TQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply | Accepts 1.71–5.5 V; powers digital core, SRAM, and most analog blocks. |
| VSS | Digital ground | Reference return for digital logic and I/O buffers; must be low-impedance connection to PCB ground plane. |
| XRES | Active-low reset input | Asynchronous reset pin; internal pull-up ensures reliable startup without external RC network. |
| SWDCK / SWDIO | Debug interface | Two-pin Serial Wire Debug (SWD) for programming and real-time debugging via ModusToolbox™ or PSoC™ Creator. |
| P0[0]–P0[7] | Programmable GPIO | Support CAPSENSE™, analog input/output, digital logic, LCD segment drive, or serial interface functions - configured in firmware. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable Analog Blocks | Two opamps with selectable drive modes (high-bandwidth internal / high-drive external) and ADC input buffering - enable precision signal conditioning without external opamp ICs. |
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration - eliminates manual tuning during production and compensates for environmental drift in-field. |
| Runtime-Reconfigurable SCBs | Three serial blocks independently switchable between I²C, SPI, UART - reduces BOM count and simplifies design for multi-protocol systems. |
| Deep-Sleep Analog Retention | Opamps, comparators, and CSD operate at 2.5 µA system current - enables battery-powered touch interfaces with multi-year shelf life. |
| Programmable GPIO Drive | Configurable slew rate, drive strength, and pull-up/down per pin - optimizes EMI, noise immunity, and signal integrity for mixed-signal routing. |
Applications
| Home Appliance Control Panel | Industrial HMI Touch Interface |
|---|---|
|
Use Scenario: Capacitive touch buttons and sliders on microwave oven or washing machine control panel exposed to moisture and temperature variation. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, managing display updates via GPIO-driven LCD segments, and communicating with main controller over I²C. Use Value: SmartSense auto-tuning maintains button responsiveness despite condensation; deep-sleep wake-on-touch extends standby battery life in cordless models. |
Use Scenario: Operator-facing touch panel on PLC-mounted machinery requiring ESD-hardened, noise-immune human interface in factory environments. IC Role / Device Role / Timing Role: Standalone HMI controller handling touch input, LED status feedback, and real-time alarm signaling via UART to safety PLC. Use Value: >5:1 SNR CAPSENSE™ rejects EMI from nearby motors; programmable GPIO slew rates minimize radiated emissions in EMC-critical zones. |
| Medical Patient Monitor UI | Smart Thermostat Interface |
|
Use Scenario: Touch-sensitive front panel on portable vital-sign monitor where reliability, low power, and fluid resistance are critical. IC Role / Device Role / Timing Role: Dedicated UI processor acquiring touch data, driving segmented LCD, and logging events to internal flash while maintaining <2.5 µA sleep current. Use Value: Water-tolerant CAPSENSE™ meets IEC 60601-1 splash requirements; integrated 12-bit ADC reads temperature/humidity sensors directly. |
Use Scenario: Battery-powered smart thermostat with capacitive touch controls, ambient sensor fusion, and wireless module coordination. IC Role / Device Role / Timing Role: System-on-chip managing touch, temperature/humidity sensing (via SAR ADC), local display, and SPI communication with Wi-Fi/BLE SoC. Use Value: Single-chip integration reduces bill-of-materials; deep-sleep current enables 5+ year coin-cell operation with periodic sensor polling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4024LQI-S402 | Same PSoC™ 4100S architecture but with 32 KB flash, 4 KB SRAM, and no SmartSense auto-tuning. | Limited firmware complexity and no automatic CAPSENSE™ calibration - requires manual tuning per unit. | Select when cost sensitivity outweighs field calibration effort and memory headroom is sufficient. |
| CY8C4124AZI-S423 | Same 64 KB/8 KB memory, but in 40-pin QFN package with enhanced thermal performance and identical CAPSENSE™ features. | Better power dissipation in space-constrained, thermally dense layouts; same firmware compatibility. | Select for compact PCBs needing improved thermal management without changing software stack. |
Compared with CY8C4124LQI-S412, the CY8C4024LQI-S402 trades memory and SmartSense for lower cost, while the CY8C4124AZI-S423 offers identical functionality in a thermally superior QFN package - both maintain full PSoC™ Creator and ModusToolbox™ toolchain compatibility.
Availability
CY8C4124LQI-S412 is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMI interfaces, medical patient monitors, and smart thermostat designs requiring stable component supply, long-term lifecycle support, and qualified automotive-grade traceability.
Supply support for CY8C4124LQI-S412 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 specializing in power management, sensing, and microcontroller solutions for industrial, automotive, and IoT applications.
CY8C4124LQI-S412 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 peripherals in a single chip.
FAQ
Does CY8C4124LQI-S412 support USB connectivity?
No, CY8C4124LQI-S412 does not include a USB PHY or USB controller. It provides three SCB blocks configurable as I²C, SPI, or UART only. For USB host or device functionality, an external USB-to-UART bridge or companion SoC is required.
What development tools are officially supported for this device?
Infineon officially supports ModusToolbox™ (v3.x+) and legacy PSoC™ Creator (v4.4) for firmware development, CAPSENSE™ tuning, and hardware configuration. Both provide GUI-based peripheral setup, auto-generated APIs, and debug integration via KitProg3 or MiniProg4 programmers.
Can the internal opamps drive external loads directly?
Yes - each opamp supports high-drive external mode with up to ±25 mA output current and rail-to-rail operation. This allows direct driving of small solenoids, LEDs, or analog sensor excitation circuits without external buffer stages.
Is the 12-bit SAR ADC capable of differential measurements?
Yes, the SAR ADC supports true differential input mode with programmable gain (1×, 2×, 4×, 8×) and hardware averaging across up to 64 samples. Differential mode improves noise rejection for precision sensor interfaces like bridge-based pressure or load cells.
CY8C4124LQI-S412 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-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:
- 27
- Program Memory Size:
- 16KB (16K 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:
CY8C4124LQI-S412 FAQ
1.How can I place an order for CY8C4124LQI-S412 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4124LQI-S412 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 CY8C4124LQI-S412 reliable?
The price and inventory of CY8C4124LQI-S412 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4124LQI-S412 is usually 5 days.
3.What payment methods are accepted for CY8C4124LQI-S412?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4124LQI-S412 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4124LQI-S412?
CY8C4124LQI-S412 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4124LQI-S412 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 CY8C4124LQI-S412?
For technical support, including CY8C4124LQI-S412 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4124LQI-S412 requirements.
6.How does Aetrix verify that CY8C4124LQI-S412 is sourced from the original manufacturer or authorized distributors?
All CY8C4124LQI-S412 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 CY8C4124LQI-S412 meets industry standards.
7.What is the process for return or replacement of CY8C4124LQI-S412?
All CY8C4124LQI-S412 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4124LQI-S412, 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 CY8C4124LQI-S412 part is unused and in its original packaging.
Return procedure for CY8C4124LQI-S412:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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