Infineon Technologies CY8C4124LQQ-443

Overview

CY8C4124LQQ-443 from Infineon Technologies (formerly Cypress Semiconductor) is a 32-bit Arm® Cortex®-M0 programmable system-on-chip (PSoC® 4100 family) integrating MCU, reconfigurable analog/digital blocks, 12-bit SAR ADC (806 ksps), two opamps with comparator mode, and two SCBs supporting I²C/SPI/UART. It operates from 1.71 V to 5.5 V and supports –40 °C to +105 °C industrial temperature range, targeting capacitive touch HMI, sensor fusion, and low-power embedded control.

For engineers reviewing the CY8C4124LQQ-443 datasheet, CY8C4124LQQ-443 pinout, CY8C4124LQQ-443 application, or CY8C4124LQQ-443 equivalent, key selection criteria include its 24-MHz CPU with single-cycle multiply, 32 kB flash + 4 kB SRAM, CapSense® Sigma-Delta (CSD) support with >5:1 SNR, Deep Sleep current of 20 nA, and 44-pin TQFP package with 36 GPIOs.

Technical Context

The device implements a tightly coupled AHB-Lite bus architecture connecting the Cortex-M0 core, SRAM, flash with Read Accelerator, and programmable digital/analog peripherals. Its analog subsystem includes two opamps configurable as buffers, comparators, or ADC input drivers, plus a dedicated 12-bit SAR ADC with channel sequencer and signal averaging.

Digital flexibility is enabled by four TCPWM blocks (supporting center-aligned PWM, kill-signal triggering), two reconfigurable SCBs, and a programmable interconnect matrix routing signals between GPIOs and internal resources - all controllable via PSoC Creator IDE without hardware changes.

Key Specifications

Pinout & Package

Package: 44-pin TQFP (10 × 10 mm, 0.8 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable mixed-signal controller applications.

Compared with CY8C4124LQQ-443, CY8C4247LQI-BL483 adds wireless functionality at higher cost and power, while STM32F072CBT6 requires external analog components to match basic sensing/touch capability - making CY8C4124LQQ-443 optimal for cost-sensitive, analog-rich embedded controllers without RF needs.

Availability

CY8C4124LQQ-443 is available at Aetrix Electronics and suitable for smart home HMI, industrial sensor nodes, medical front-ends, and automotive cabin controls requiring stable component supply, long-term lifecycle support, and qualified industrial-temperature-grade silicon.

Supply support for CY8C4124LQQ-443 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, microcontrollers, and security solutions for automotive, industrial, and IoT markets.

CY8C4124LQQ-443 belongs to the PSoC® 4100 family - designed specifically for cost-effective, low-power embedded systems requiring integrated analog signal conditioning, capacitive touch, and flexible digital peripherals without external glue logic.

FAQ

What development tools are required to program and debug CY8C4124LQQ-443?

PSoC Creator IDE (free Windows-based tool) is required for schematic-based hardware configuration and firmware development. Programming and debugging use the standard Arm Serial Wire Debug (SWD) interface via MiniProg3 or KitProg2 programmers. No JTAG adapter or third-party license is needed - all components, APIs, and example projects are included in the installer.

Does CY8C4124LQQ-443 support capacitive touch through water or gloves?

Yes - its CapSense® Sigma-Delta (CSD) implementation achieves >5:1 signal-to-noise ratio and includes SmartSense™ auto-tuning, enabling reliable detection through up to 5 mm of glass and 2 mm of water. Glove operation is supported via adjustable sensitivity thresholds and oversampling in firmware.

Can the 12-bit SAR ADC operate during Deep Sleep mode?

No - the SAR ADC requires active CPU clock and analog power domain; it cannot sample in Deep Sleep. However, the two low-power comparators remain operational and can trigger wakeup on analog threshold crossing, after which the ADC initializes and acquires data in Active mode.

Is external crystal required for accurate timing in real-time applications?

No - the internal IMO (Internal Main Oscillator) is factory-trimmed to ±2% accuracy over temperature and voltage, sufficient for most HMI and sensor applications. An external crystal (4–25 MHz) is optional and used only when tighter timing precision (<±50 ppm) is required, such as for UART baud rate stability at high speeds.