Infineon Technologies CY8C4124LQS-S423T

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Product attributes Property Value
Manufacturer Infineon Technologies
Product Series PSOC™ 4 CY8C4100S Plus
Packaging Tape & Reel (TR) | 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 ~ 105°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 CY8C4124LQS-S423T is a 32-bit ARM Cortex-M0+ MCU running at 24MHz. It features 16KB flash and 4KB RAM in a 40-UFQFN package. With integrated CapSense, LCD driver, and a 1.71V to 5.5V supply, it is optimized for human-machine interface and low-power applications.

  • Integrated CapSense – eliminates external touch controllers, saving cost and space.
  • Ultra-low 1.71V operation – extends battery life in portable devices.
  • ARM Cortex-M0+ core – industry-standard architecture with broad tool support.
  • 40-UFQFN with exposed pad – excellent thermal performance for compact designs.

Touch-Sensitive Control Panels

Integrated CapSense eliminates external touch ICs, reducing BOM cost in white goods.

Wearable Health Monitors

1.71V operation and 4KB RAM support low-power sensor fusion in fitness bands.

Smart Home Thermostats

LCD driver and CapSense enable sleek UI, while 24MHz Cortex-M0+ handles PID algorithms.

Industrial HMI Keypads

CapSense with 5.5V tolerance works with gloved hands in factory environments.

Battery-Powered IoT Sensors

Low voltage and PWM outputs drive wireless modules and LEDs in environmental monitors.

Automotive Interior Lighting

Brown-out detection and 105°C rating support LED ambient lighting modules.

Q: What core does this MCU use?
A: ARM Cortex-M0+ at 24MHz.
Q: What is the voltage range?
A: 1.71V to 5.5V.
Q: Does it support CapSense?
A: Yes, integrated CapSense for touch sensing.
Q: How much flash and RAM?
A: 16KB flash and 4KB RAM.
Q: What package is it?
A: 40-UFQFN with exposed pad.
Base Product Number : CY8C4124LQS-S423
16KB flash 24MHz 32-bit MCU 40-UFQFN 4KB RAM ARM Cortex-M0+ CapSense LCD low power LVD POR PWM touch sensing WDT
Q: What core does this MCU use?
A: ARM Cortex-M0+ at 24MHz.
Q: What is the voltage range?
A: 1.71V to 5.5V.
Q: Does it support CapSense?
A: Yes, integrated CapSense for touch sensing.
Q: How much flash and RAM?
A: 16KB flash and 4KB RAM.
Q: What package is it?
A: 40-UFQFN with exposed pad.