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Infineon Technologies CY8C4124LQI-S432T
- Part No.:
- CY8C4124LQI-S432T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-UFQFN Exposed Pad
- Datasheet:
-
CY8C4124LQI-S432T.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,913
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Product details
Overview
CY8C4124LQI-S432T from Infineon is a programmable 32-bit Arm® Cortex®-M0+ microcontroller with 48 MHz CPU, 32 KB flash, 4 KB SRAM, integrated CAPSENSE™ capacitive sensing, and reconfigurable analog/digital blocks. It supports deep-sleep operation at 2.5 µA, includes three SCBs (I²C/SPI/UART), five TCPWM blocks, and 36 GPIOs-used in human-interface devices requiring robust touch control and low-power embedded logic.
For engineers reviewing the CY8C4124LQI-S432T datasheet, CY8C4124LQI-S432T pinout, CY8C4124LQI-S432T application, or CY8C4124LQI-S432T equivalent, key selection criteria include its 12-bit SAR ADC (1 Msps), dual opamps with Deep Sleep support, SmartSense auto-tuning for water-tolerant touch, programmable drive strength per GPIO, and TQFP-48 package compatibility with PSoC™ 4100S design ecosystem.
Technical Context
The CY8C4124LQI-S432T integrates a fixed-function Arm® Cortex®-M0+ core with fully configurable analog (CTB opamps, SAR ADC, IDACs, comparators) and digital (TCPWM, SCB, PLD) peripherals routed via a programmable interconnect matrix. Its clock system combines ±2% IMO, 32 kHz ILO, and WCO for precision timing across sleep/wake transitions.
Analog signal chain flexibility is enabled by hardware-accelerated CAPSENSE™ sigma-delta sensing with >5:1 SNR, while digital logic can be implemented using Smart I/O blocks or TCPWM-triggered kill signals for motor safety. All analog and digital resources operate in Deep Sleep mode with only 2.5 µA system current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz - single-cycle multiply, full Thumb-2 instruction set for deterministic real-time control. |
| Memory | 32 KB flash / 4 KB SRAM - sufficient for CAPSENSE™ firmware + communication stack with zero external memory required. |
| ADC | 12-bit SAR @ 1 Msps - supports differential input, channel sequencing, and hardware averaging for noise-immune sensor acquisition. |
| Opamps | 2 × continuous-time opamps - configurable as buffer, comparator, or ADC input driver; operational in Deep Sleep mode. |
| Capacitive Sensing | CAPSENSE™ sigma-delta engine - >5:1 SNR, water-tolerant, with SmartSense auto-tuning eliminating manual calibration. |
| GPIO | 36 programmable pins - each supports CAPSENSE™, analog, or digital functions; drive strength and slew rate software-configurable. |
| Low-Power Mode | Deep Sleep @ 2.5 µA - maintains opamp/ADC/comparator functionality while CPU and flash are powered down. |
Pinout & Package
This device is housed in a 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments support simultaneous analog sensing, serial communication, and PWM output routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply | 1.71–5.5 V input; powers digital core, analog blocks, and I/O; requires local 100 nF decoupling. |
| GND | Ground reference | Digital and analog ground plane connection; tied to thermal pad for thermal stability. |
| XRES | External reset input | Active-low asynchronous reset; internal pull-up enables reset-free startup if left unconnected. |
| P0[0]–P0[7] | General-purpose I/O | Support CAPSENSE™, analog input/output, or digital logic; configurable drive modes (strong, open-drain, high-Z). |
| SCB0_SDA / SCB0_SCL | I²C interface signals | Configurable as master/slave; support standard/fast-mode I²C up to 400 kHz with glitch filtering. |
| TCPWM0_Line_A / TCPWM0_Line_B | Complementary PWM outputs | Hardware-synchronized edge- or center-aligned PWM pairs for motor gate drivers or LED dimming. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable analog blocks | Two opamps + 12-bit SAR ADC + dual IDACs enable mixed-signal signal conditioning without external components. |
| SmartSense auto-tuning | Eliminates manual CAPSENSE™ calibration by dynamically adjusting sensor parameters for environmental drift and water presence. |
| Programmable digital logic | PLD-based boolean logic on port pins allows glueless implementation of custom state machines or signal combiners. |
| Three SCBs | Each independently configurable as I²C, SPI, or UART - supports concurrent multi-protocol communication without resource conflict. |
| Quadrature decoder | Built into TCPWM block - directly interfaces rotary encoders with hardware position counting and direction detection. |
Applications
| Home Appliance Control Panel | Industrial HMI Keypad |
|---|---|
|
Use Scenario: Touch-enabled oven control panel with slider, buttons, and status LEDs operating in humid kitchen environments. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, managing LED PWM dimming, and communicating with main controller via I²C. Use Value: SmartSense ensures reliable touch detection despite condensation; Deep Sleep reduces standby power to <3 µA during idle periods. |
Use Scenario: Ruggedized factory-floor keypad with metal-over-capacitive buttons and backlight control. IC Role / Device Role / Timing Role: Standalone touch controller interfacing with PLC via UART; handles button debouncing, LED feedback, and ESD-robust signal conditioning. Use Value: Dual opamps buffer noisy industrial analog inputs; programmable GPIO drive strength ensures compatibility with diverse LED types. |
| Medical Patient Monitor UI | Smart Thermostat Interface |
|
Use Scenario: Low-power bedside monitor with touch sliders for parameter adjustment and capacitive proximity wake-up. IC Role / Device Role / Timing Role: CAPSENSE™ subsystem detects finger proximity to wake display; SAR ADC reads temperature and battery voltage. Use Value: 2.5 µA Deep Sleep extends battery life; >5:1 SNR prevents false triggers from ECG/EMG interference. |
Use Scenario: Wall-mounted HVAC controller with ambient light sensing, touch controls, and Zigbee/Wi-Fi coexistence. IC Role / Device Role / Timing Role: Touch processor offloading CAPSENSE™ and ambient ADC tasks from main SoC; communicates via UART or SPI. Use Value: Three SCBs allow simultaneous UART (to Wi-Fi module), I²C (to light sensor), and SPI (to display driver) without arbitration delays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4024LQI-S412 | 24 MHz CPU, 16 KB flash, 2 KB SRAM, no SmartSense, lower GPIO count (28) | Suitable for cost-sensitive basic touch panels without advanced tuning or high-speed control loops | Select when BOM cost reduction outweighs need for auto-calibration and higher performance. |
| CY8C4125LQI-S433 | Same 48 MHz CPU but 64 KB flash, 8 KB SRAM, and enhanced TCPWM features (dead-time insertion) | Required for complex motor control or multi-sensor fusion where larger code footprint and precise PWM timing are critical | Choose when firmware complexity exceeds 32 KB or hardware-level PWM safety features are mandatory. |
Compared with CY8C4124LQI-S432T, the S412 offers lower cost and power but sacrifices CAPSENSE™ tuning and processing headroom, while the S433 adds memory and PWM precision at higher unit cost-making the S432T optimal for mid-tier touch HMI designs balancing capability and bill-of-materials efficiency.
Availability
CY8C4124LQI-S432T is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMI keypads, and medical patient monitor UIs requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for CY8C4124LQI-S432T 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, sensing, and microcontroller solutions for industrial, automotive, and consumer applications.
CY8C4124LQI-S432T belongs to the PSoC™ 4100S product line-designed specifically for embedded human-interface applications demanding integrated capacitive sensing, low-power operation, and field-programmable analog/digital logic without external components.
FAQ
Does CY8C4124LQI-S432T support USB connectivity?
No. This device lacks a USB PHY or dedicated USB controller. Communication is limited to I²C, SPI, and UART via its three SCB modules. For USB host/device functionality, an external bridge IC or migration to a PSoC™ 4 BLE or PSoC™ 6 device is required.
What development tools are officially supported for CY8C4124LQI-S432T?
Infineon officially supports ModusToolbox™ (v3.x+) and legacy PSoC™ Creator v4.4 for this part. Both provide CAPSENSE™ Tuner, PDL drivers, BSPs, and code generation for TCPWM, SCB, and analog blocks. Debugging uses SWD via KitProg3 or MiniProg4 programmers.
Can the internal opamps drive external loads directly?
Yes-each opamp supports up to 25 mA output current in high-drive mode and can buffer sensors, drive LEDs, or condition signals for the SAR ADC. Output is rail-to-rail, and gain configuration is programmable via CTB registers without external resistors.
Is CY8C4124LQI-S432T qualified for automotive applications?
No. It is rated for industrial temperature range (–40 °C to +85 °C) and carries industrial-grade qualification (AEC-Q100 not applicable). For automotive use, Infineon recommends the PSoC™ 4100S Plus family (e.g., CY8C4146AZI-S433) with AEC-Q100 Grade 2 certification.
CY8C4124LQI-S432T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-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:
- 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, 16x12b SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4124LQI-S432T FAQ
1.How can I place an order for CY8C4124LQI-S432T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4124LQI-S432T 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-S432T reliable?
The price and inventory of CY8C4124LQI-S432T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4124LQI-S432T is usually 5 days.
3.What payment methods are accepted for CY8C4124LQI-S432T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4124LQI-S432T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4124LQI-S432T?
CY8C4124LQI-S432T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4124LQI-S432T 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-S432T?
For technical support, including CY8C4124LQI-S432T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4124LQI-S432T requirements.
6.How does Aetrix verify that CY8C4124LQI-S432T is sourced from the original manufacturer or authorized distributors?
All CY8C4124LQI-S432T 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-S432T meets industry standards.
7.What is the process for return or replacement of CY8C4124LQI-S432T?
All CY8C4124LQI-S432T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4124LQI-S432T, 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-S432T part is unused and in its original packaging.
Return procedure for CY8C4124LQI-S432T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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