Infineon Technologies CY8C4124LQE-S423

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Product attributes Property Value
Manufacturer Infineon Technologies
Product Series PSOC™ 4 CY8C4100S Plus
Packaging Tray | NULL
Core Processor ARM® Cortex®-M0+
Core Size 32-Bit
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 16x10b, 12x12b SAR; D/A 2x7b
Oscillator Type Internal
Operating Temperature -40°C ~ 125°C (TA)
Grade Automotive
Qualification AEC AEC-Q100
Mounting Type Surface Mount
Supplier Device Package 40-QFN (6x6)
Package / Case 40-UFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Infineon CY8C4124LQE-S423 is a PSoC 4 microcontroller that combines an ARM Cortex-M0+ core with programmable analog and digital peripherals. It operates from 1.71V to 5.5V and includes CapSense, LCD drive, and multiple communication interfaces. With 16KB flash and 4KB SRAM, it is designed for cost-sensitive applications requiring touch sensing and mixed-signal integration.

  • Integrated CapSense: Eliminates external touch ICs, reducing BOM cost and board space.
  • Wide Voltage Range (1.71V-5.5V): Supports both 3.3V and 5V systems, simplifying power design.
  • High-Temperature Operation (125°C): Suitable for automotive and industrial environments.
  • ARM Cortex-M0+ Efficiency: Low-power core with 24MHz performance for responsive control.

Industrial Sensor Interfaces

With CapSense and a wide voltage range, this MCU is ideal for industrial control panels and sensor hubs that require reliable touch input and robust operation in harsh environments.

Portable Medical Devices

The low-power ARM Cortex-M0+ core and 1.71V minimum supply enable battery-powered health monitors and diagnostic tools that need extended runtime and compact form factors.

Smart Home Controllers

Integrated LCD drive and PWM support make it suitable for smart thermostats and lighting controls, providing local display and dimming functions without external components.

Automotive Interior Lighting

Operating up to 125°C, this MCU can handle under-hood or cabin lighting modules, using PWM for LED brightness control and LVD for safe power-down sequences.

Consumer Appliances

CapSense-based touch buttons and proximity detection replace mechanical switches in kitchen appliances, improving durability and user experience while maintaining a wide voltage tolerance.

IoT Edge Nodes

With 16KB flash and 4KB RAM, it can run lightweight sensor fusion algorithms and communicate via external transceivers, making it a cost-effective edge controller.

Q: What is the operating voltage range of the CY8C4124LQE-S423?
A: It operates from 1.71V to 5.5V, supporting both low-power and standard applications.
Q: What core does this MCU use?
A: It uses an ARM Cortex-M0+ processor running at up to 24MHz.
Q: Does it support capacitive sensing?
A: Yes, it includes CapSense technology for touch and proximity sensing.
Q: What is the package type?
A: It comes in a 40-UFQFN exposed pad package.
Q: What is the operating temperature range?
A: It is rated for -40°C to 125°C (TA).
Base Product Number : CY8C4124LQE-S423
32-bit 40-UFQFN ARM Cortex-M0+ automotive CapSense industrial LCD medical PSoC 4 PWM smart home
Q: What is the operating voltage range of the CY8C4124LQE-S423?
A: It operates from 1.71V to 5.5V, supporting both low-power and standard applications.
Q: What core does this MCU use?
A: It uses an ARM Cortex-M0+ processor running at up to 24MHz.
Q: Does it support capacitive sensing?
A: Yes, it includes CapSense technology for touch and proximity sensing.
Q: What is the package type?
A: It comes in a 40-UFQFN exposed pad package.
Q: What is the operating temperature range?
A: It is rated for -40°C to 125°C (TA).