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Infineon Technologies CY8C4124LQI-443T
- Part No.:
- CY8C4124LQI-443T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4124LQI-443T.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,964
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Product details
Overview
CY8C4124LQI-443T from Infineon Technologies (formerly Cypress) is a 32-bit Arm Cortex-M0 programmable system-on-chip (PSoC® 4100 family) integrating MCU, reconfigurable analog/digital blocks, 12-bit 806 ksps SAR ADC, two opamps with comparator mode, and two IDACs. It operates from 1.71 V to 5.5 V, supports Deep Sleep mode at 20 nA, and delivers 24 MHz CPU performance with single-cycle multiply - used in capacitive touch HMI, sensor signal conditioning, and low-power industrial control nodes.
For engineers reviewing the CY8C4124LQI-443T datasheet, CY8C4124LQI-443T pinout, CY8C4124LQI-443T application, or CY8C4124LQI-443T equivalent, key selection criteria include its integrated CapSense Sigma-Delta (CSD) engine with >5:1 SNR, programmable GPIO drive modes across 36 pins, 4 kB SRAM retention in Hibernate, dual SCB blocks supporting runtime-reconfigurable I²C/SPI/UART, and 4× TCPWM blocks with comparator-triggered kill signals for motor control safety.
Technical Context
The device implements a tightly coupled AHB-Lite bus architecture connecting the Cortex-M0 core, flash accelerator (0-wait-state at 24 MHz), and SRAM controller. Its analog subsystem includes a dedicated CTBm block hosting two opamps with selectable internal/external drive paths and ADC input buffering, plus a SAR ADC with hardware channel sequencer and signal averaging.
Digital flexibility stems from four TCPWM blocks supporting center-aligned PWM, pseudo-random modulation, and comparator-synchronized kill events - critical for BLDC gate drive timing integrity - alongside two serial communication blocks (SCBs) that dynamically switch between I²C, SPI, and UART protocols without firmware reload.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0, 24 MHz max, single-cycle 32-bit multiply - enables deterministic real-time control with Thumb-2 binary compatibility for future migration to M3/M4. |
| Flash / SRAM | 32 kB flash with Read Accelerator; 4 kB SRAM retained in Hibernate - sufficient for CapSense firmware + sensor fusion algorithms with nonvolatile state preservation. |
| ADC | 12-bit SAR, 806 ksps, differential/single-ended input, hardware channel sequencer with signal averaging - supports multi-channel analog sensor acquisition with noise reduction in one hardware pass. |
| Analog Peripherals | 2 opamps (reconfigurable drive/comparator/ADC buffer); 2 IDACs; 2 low-power comparators active in Deep Sleep - enables self-contained analog front-end for current-loop sensing or touch electrode biasing. |
| Power Modes | Stop Mode @ 20 nA; Deep Sleep & Hibernate with GPIO wakeup - allows battery-powered devices to achieve multi-year operation with periodic sensor wakeups. |
| GPIO | 36 programmable pins with configurable drive strength, slew rate, and analog/digital/CapSense/LCD roles - eliminates external level shifters or discrete analog switches in mixed-signal designs. |
| Communication | 2 × SCBs supporting I²C/SPI/UART concurrently via runtime reconfiguration - reduces BOM count by consolidating protocol interfaces into shared hardware resources. |
Pinout & Package
Package: 44-pin TQFP (LQI suffix), 10 mm × 10 mm, 0.8 mm pitch, exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | Single 1.71–5.5 V rail powers entire chip - simplifies power design versus multi-rail MCUs. |
| VSS | Ground reference | Dedicated analog/digital ground pins minimize coupling noise in mixed-signal operation. |
| P0[0]–P0[7] | Port 0 GPIO | Support CapSense, analog input, LCD segment, or digital I/O - enables direct connection to touch electrodes or sensor bridges. |
| P1[0]–P1[7] | Port 1 GPIO | Programmable drive modes (2–8 mA) and slew control - adapts to EMI-sensitive or high-speed interface requirements. |
| SWDIO / SWCLK | Debug interface | Two-pin Serial Wire Debug - enables full on-chip debugging without JTAG header footprint. |
| XRES | External reset | Active-low asynchronous reset with internal pull-up - ensures reliable startup under brown-out conditions. |
| XTAL_IN / XTAL_OUT | Crystal oscillator | Supports 1–33 MHz external crystal for precise timing - optional when using internal IMO/ILO oscillators. |
Key Features
| Feature | Design Value |
|---|---|
| CapSense CSD Engine | Hardware-accelerated sigma-delta capacitive sensing with >5:1 SNR and water-tolerant scanning - eliminates need for external touch controllers in consumer HMI designs. |
| SmartSense™ Auto-Tuning | Firmware-independent automatic calibration of sensor baseline and sensitivity - reduces production line tuning time and field drift compensation effort. |
| Programmable Analog Routing | Opamp outputs and ADC inputs routed through configurable interconnect matrix - enables custom analog signal chains (e.g., PGA → filter → ADC) without PCB redesign. |
| TCPWM Kill Signal | Comparator output directly triggers immediate PWM shutdown across all TCPWM channels - meets functional safety requirements for motor overcurrent protection. |
| Flash Security Modes | Open/Protected/Kill modes with irreversible Kill option - prevents unauthorized firmware extraction or malicious reprogramming in deployed edge devices. |
Applications
| Capacitive Touch HMI | Industrial Sensor Node |
|---|---|
Use Scenario: Waterproof touch panel for kitchen appliance control with proximity wake-up and gesture recognition. IC Role / Device Role / Timing Role: Primary system controller executing CapSense firmware, managing LED feedback, and handling I²C communication with host MCU. Use Value: Integrated CSD engine and SmartSense eliminate external touch ASIC; 20 nA Stop Mode extends battery life during standby. | Use Scenario: Battery-powered vibration/temperature sensor node transmitting data via UART to gateway every 10 minutes. IC Role / Device Role / Timing Role: Signal conditioner (opamp + ADC), data logger (SRAM buffer), and low-power scheduler (Deep Sleep timer + GPIO wakeup). Use Value: Single-chip solution replaces discrete opamp, ADC, and microcontroller - reduces size, power, and BOM cost. |
| Motor Control Interface | Smart Lighting Driver |
Use Scenario: BLDC fan controller requiring overcurrent shutdown, RPM feedback, and soft-start sequencing. IC Role / Device Role / Timing Role: PWM generator (TCPWM), current sense amplifier (opamp), fault monitor (comparator), and commutation logic executor. Use Value: Comparator-triggered kill signal ensures sub-microsecond PWM disable on overcurrent - meets IEC 60335 Class II safety timing constraints. | Use Scenario: Dimmable LED driver with ambient light sensing and touch slider for brightness control. IC Role / Device Role / Timing Role: Ambient light ADC input, CapSense slider interface, PWM dimming output, and I²C slave to master lighting controller. Use Value: Combines light sensing, human interface, and power control in one die - avoids separate sensor IC, touch controller, and LED driver chips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4124AZI-S433 | Same PSoC 4100 core but in 48-pin TQFP; includes I²C bootloader pre-programmed in flash. | Requires larger PCB footprint; better suited for designs needing more GPIOs or debug access during production programming. | Select when additional pins or factory-programmed bootloader functionality is required - not drop-in compatible due to package and pin count mismatch. |
| STM32F072CBT6 | Arm Cortex-M0 at 48 MHz; no integrated CapSense or programmable analog; relies on external components for touch or precision analog functions. | Needs external opamps, ADC, and touch controller for equivalent CapSense performance - increases BOM and layout complexity. | Choose only if existing STM32 toolchain familiarity outweighs the PSoC's analog integration benefit and design cycle time savings. |
Compared with CY8C4124LQI-443T, CY8C4124AZI-S433 offers more I/O and factory bootloader convenience at the cost of board space, while STM32F072CBT6 trades integrated analog flexibility for higher clock speed and broader ecosystem support - making the CY8C4124LQI-443T optimal for compact, low-power, mixed-signal applications where analog programmability reduces component count.
Availability
CY8C4124LQI-443T is available at Aetrix Electronics and suitable for capacitive touch HMI, industrial sensor nodes, motor control interfaces, and smart lighting drivers requiring stable component supply across automotive-grade temperature range (–40 °C to +105 °C).
Supply support for CY8C4124LQI-443T 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, delivering power systems, sensors, and microcontrollers for industrial, automotive, and IoT applications.
This device belongs to the PSoC® 4100 product line - designed specifically to unify programmable analog, digital logic, and Arm-based control in a single chip for rapid development of differentiated embedded systems with minimal external components.
FAQ
What debug interfaces does CY8C4124LQI-443T support?
The device features a two-wire Serial Wire Debug (SWD) interface compliant with Arm CoreSight standards, supporting full on-chip debugging, flash programming, and real-time trace without external pods or emulators. Debug circuits are enabled by default and can be disabled in firmware; re-enabling requires full flash erase and reprogramming.
Does CY8C4124LQI-443T support capacitive touch sensing without external components?
Yes - it integrates Cypress's CapSense Sigma-Delta (CSD) hardware engine with >5:1 SNR and built-in water tolerance. All required analog front-end circuitry (IDACs, opamps, modulator) is on-die, enabling robust touch buttons, sliders, and proximity detection using only PCB traces as sensors.
Can the 12-bit SAR ADC operate during Deep Sleep mode?
No - the SAR ADC requires Active or Sleep mode. However, the two low-power comparators remain operational in Deep Sleep and can trigger wakeup events or generate interrupts based on analog threshold crossings, enabling ultra-low-power sensor monitoring.
What is the maximum operating temperature range for CY8C4124LQI-443T?
The device is rated for extended industrial operation from –40 °C to +105 °C ambient temperature, validated per JEDEC JESD22-A104 reliability testing. This rating applies to all specified electrical parameters and is guaranteed across the full voltage range (1.71 V to 5.5 V).
CY8C4124LQI-443T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4100
- 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:
- 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 8x12b SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4124LQI-443T FAQ
1.How can I place an order for CY8C4124LQI-443T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4124LQI-443T 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-443T reliable?
The price and inventory of CY8C4124LQI-443T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4124LQI-443T is usually 5 days.
3.What payment methods are accepted for CY8C4124LQI-443T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4124LQI-443T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4124LQI-443T?
CY8C4124LQI-443T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4124LQI-443T 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-443T?
For technical support, including CY8C4124LQI-443T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4124LQI-443T requirements.
6.How does Aetrix verify that CY8C4124LQI-443T is sourced from the original manufacturer or authorized distributors?
All CY8C4124LQI-443T 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-443T meets industry standards.
7.What is the process for return or replacement of CY8C4124LQI-443T?
All CY8C4124LQI-443T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4124LQI-443T, 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-443T part is unused and in its original packaging.
Return procedure for CY8C4124LQI-443T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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