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Infineon Technologies CY8C4024LQI-S412T
- Part No.:
- CY8C4024LQI-S412T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-UFQFN Exposed Pad
- Datasheet:
-
CY8C4024LQI-S412T.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,495
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Product details
Overview
CY8C4024LQI-S412T from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller with 24 KB flash, 4 KB SRAM, and integrated CAPSENSE™ capacitive sensing engine. It operates from 1.71 V to 5.5 V, supports Deep Sleep mode at 2.5 µA system current, and delivers best-in-class SNR (>5:1) for water-tolerant touch interfaces in consumer HMI applications.
For engineers reviewing the CY8C4024LQI-S412T datasheet, CY8C4024LQI-S412T pinout, CY8C4024LQI-S412T application, or CY8C4024LQI-S412T equivalent, key selection criteria include its 48-MHz CPU performance, dual SCB blocks (I²C/SPI/UART), five TCPWM timers with comparator-triggered kill signals, and programmable analog blocks including two IDACs and low-power comparators.
Technical Context
The device implements a single-layer AHB-Lite interconnect between the Cortex®-M0+ core and peripherals, enabling deterministic access to memory and I/O. Its analog subsystem integrates a capacitance-sensing sigma-delta modulator (CAPSENSE™ v2), two current DACs configurable per-pin, and two deep-sleep-capable comparators with hardware-triggered wake-up capability.
Digital resources include five 16-bit TCPWM blocks supporting center-aligned PWM, edge-aligned timing, and pseudo-random modulation - all with comparator-based kill input for motor control safety. Two reconfigurable serial communication blocks (SCBs) support runtime switching among I²C, SPI, and UART protocols without firmware reload.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max, single-cycle multiply - enables real-time sensor fusion and responsive HMI control without external co-processor. |
| Memory | 24 KB flash (with read accelerator), 4 KB SRAM - sufficient for CAPSENSE™ firmware + BLE stack + application logic in compact embedded designs. |
| Capacitive Sensing | CAPSENSE™ v2 sigma-delta architecture with >5:1 SNR and SmartSense auto-tuning - eliminates manual calibration for production touch panels exposed to moisture or ESD. |
| Low-Power Modes | Deep Sleep at 2.5 µA digital + operational analog - supports battery-powered devices requiring multi-year operation on coin cells. |
| Timing Peripherals | Five 16-bit TCPWM blocks with comparator-triggered kill inputs - enables safe, hardware-synchronized motor gate shutdown in BLDC drives. |
| Serial Interfaces | Two SCBs, each configurable as I²C/SPI/UART - allows simultaneous host interface (I²C) and sensor bridge (SPI) without external logic. |
| GPIO | Up to 36 pins, all CAPSENSE™/analog/digital capable, programmable drive strength/slew rate - simplifies PCB routing and reduces BOM count in space-constrained designs. |
Pinout & Package
Package: 40-pin QFN (6 × 6 mm, 0.5 mm pitch), exposed thermal pad, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | Accepts 1.71–5.5 V; powers all digital logic, analog blocks, and GPIO drivers. |
| VSS | Digital ground | Reference return for digital circuitry and SWD debug interface. |
| P0[0]–P0[7] | Programmable GPIO port 0 | Support CAPSENSE™, analog input/output, or digital logic; configurable slew rate and drive strength. |
| P1[0]–P1[7] | Programmable GPIO port 1 | Includes dedicated SCB0 SCL/SDA or MOSI/MISO/SCK pins; supports hardware I²C address match. |
| SWDIO / SWCLK | ARM Serial Wire Debug | Two-pin debug interface; enables full chip programming, breakpoint debugging, and trace without JTAG header. |
| XRES | External reset input | Active-low asynchronous reset; debounced internally; overrides all power modes. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration that adapts to environmental drift and electrode aging without host CPU intervention. |
| Reconfigurable SCBs | Each serial block can be dynamically assigned I²C master/slave, SPI master/slave, or UART TX/RX - enabling flexible peripheral bridging in field-upgradable firmware. |
| Deep Sleep analog retention | Analog comparators remain active with sub-µA quiescent current while CPU and SRAM are powered down - enables wake-on-touch with <10 ms latency. |
| Programmable I/O matrix | Per-pin configuration of drive mode (pull-up/down, open-drain, high-Z), current (0.5–10 mA), and slew rate (slow/fast) - eliminates need for external level shifters or bus buffers. |
| Integrated ROM bootloader | 8 KB on-chip ROM contains factory-programmed PSoC™ Creator-compatible bootloader - supports field updates via UART/I²C without external programmer. |
Applications
| Consumer Touch Remote | Industrial HMI Panel |
|---|---|
Use Scenario: Battery-powered TV remote with gesture-sensitive touchpad and backlight dimming. IC Role / Device Role / Timing Role: MCU host for CAPSENSE™ touchpad, PWM-controlled LED backlight, and IR transmitter timing. Use Value: Single-chip solution replaces discrete touch controller + MCU + LED driver; Deep Sleep extends battery life to >2 years on CR2032. | Use Scenario: DIN-rail mounted PLC operator panel with waterproof membrane keypad and status LEDs. IC Role / Device Role / Timing Role: Primary controller for wet-environment touch interface, relay timing, and Modbus RTU over RS-485. Use Value: CAPSENSE™ v2's >5:1 SNR ensures reliable actuation through condensation or saline residue; TCPWM kill signals prevent relay chatter during ESD events. |
| Smart Appliance Control | Medical Device Interface |
Use Scenario: Touch-enabled washing machine control panel with water-level sensing and motor speed feedback. IC Role / Device Role / Timing Role: System-on-chip managing CAPSENSE™ buttons, ADC-based water level detection, and motor phase timing via TCPWM. Use Value: Integrated IDACs enable ratiometric capacitance measurement; comparator-triggered TCPWM kill prevents motor runaway if touch firmware hangs. | Use Scenario: Portable infusion pump with tamper-resistant touch interface and audible alarm timing. IC Role / Device Role / Timing Role: Safety-critical controller for touch input validation, piezo buzzer PWM tone generation, and watchdog-triggered fail-safe shutdown. Use Value: ROM bootloader enables secure firmware updates; Deep Sleep + active comparators allow immediate wake-on-button-press with <15 ms response for emergency stop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller-with-integrated-capacitive-sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4024LQI-S402 | Same die, 16 KB flash, 2 KB SRAM - reduced memory footprint. | Suitable for simpler CAPSENSE™-only applications without BLE or complex UI logic. | Select when firmware size <12 KB and no concurrent protocol stacks required. |
| CY8C4025LQI-S412 | Same package, 32 KB flash, 4 KB SRAM, additional SCB and TCPWM block. | Required for designs needing dual independent serial buses plus three independent PWM outputs. | Select when adding USB-C PD communication or dual-motor control with independent dead-time insertion. |
Compared with CY8C4024LQI-S412T, the S402 offers lower memory cost for basic touch-only systems, while the S412 provides headroom for feature expansion - both share identical CAPSENSE™ v2 performance, pin compatibility, and low-power behavior.
Availability
CY8C4024LQI-S412T is available at Aetrix Electronics and suitable for consumer HMI, industrial control panels, smart appliance interfaces, and portable medical device designs requiring stable component supply and long-term lifecycle support.
Supply support for CY8C4024LQI-S412T 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 ICs, and embedded controllers, with global R&D centers and ISO/TS 16949-certified manufacturing.
The PSoC™ 4000S product line targets cost-sensitive, space-constrained embedded systems requiring integrated analog sensing, robust touch interfaces, and ultra-low-power operation - especially where mixed-signal flexibility replaces multi-chip solutions.
FAQ
Does CY8C4024LQI-S412T support Bluetooth Low Energy?
No. This part lacks an integrated BLE radio or RF front-end. It can interface with external BLE modules (e.g., CYW20735) via its SCB blocks configured as UART or SPI, but does not provide native Bluetooth connectivity. BLE-capable variants belong to the PSoC™ 4100S or PSoC™ 6 families.
What development tools are officially supported for this MCU?
Infineon officially supports ModusToolbox™ (cross-platform, Eclipse-based) and PSoC™ Creator (Windows-only, schematic-driven). Both include CAPSENSE™ Tuner, TCPWM configurator, and SCB protocol stack generators. MiniProg4 is the recommended programmer/debugger; CY8CKIT-145-40XX is the validated prototyping kit.
Can the internal oscillators meet timing requirements for I²C Fast Mode (400 kHz)?
Yes. The ±2% internal main oscillator (IMO) is factory-trimmed and stable enough for I²C Fast Mode operation when used with the SCB's built-in clock divider and glitch-free prescaler. No external crystal is required unless system-level timing budgets demand <1% total error across temperature and voltage.
Is the exposed thermal pad on the QFN package electrically connected?
Yes. The exposed pad is internally connected to VSS and must be soldered to a PCB thermal plane tied to the system ground. Thermal resistance drops from 42 °C/W (no pad connection) to 28 °C/W (fully connected), critical for sustained 48-MHz operation in enclosed enclosures.
CY8C4024LQI-S412T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4000S
- 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:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 1x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4024LQI-S412T FAQ
1.How can I place an order for CY8C4024LQI-S412T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4024LQI-S412T 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 CY8C4024LQI-S412T reliable?
The price and inventory of CY8C4024LQI-S412T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4024LQI-S412T is usually 5 days.
3.What payment methods are accepted for CY8C4024LQI-S412T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4024LQI-S412T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4024LQI-S412T?
CY8C4024LQI-S412T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4024LQI-S412T 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 CY8C4024LQI-S412T?
For technical support, including CY8C4024LQI-S412T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4024LQI-S412T requirements.
6.How does Aetrix verify that CY8C4024LQI-S412T is sourced from the original manufacturer or authorized distributors?
All CY8C4024LQI-S412T 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 CY8C4024LQI-S412T meets industry standards.
7.What is the process for return or replacement of CY8C4024LQI-S412T?
All CY8C4024LQI-S412T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4024LQI-S412T, 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 CY8C4024LQI-S412T part is unused and in its original packaging.
Return procedure for CY8C4024LQI-S412T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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