Infineon Technologies CY8C4127LQE-S443T

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Product attributes Property Value
Manufacturer Infineon Technologies
Product Series PSOC™ 4 CY8C4000S
Packaging Tape & Reel (TR) | NULL
Core Processor ARM® Cortex®-M0+
Core Size 32-Bit
Speed 24MHz
Connectivity FIFO, I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
Peripherals Brown-out Detect/Reset, DMA, LCD, POR, PWM, Temp Sensor, TRNG, WDT
Number of I/O 34
Program Memory Size 128KB (128K x 8)
Program Memory Type FLASH
EEPROM Size -
RAM Size 16K x 8
Voltage - Supply (Vcc/Vdd) 1.71V ~ 5.5V
Data Converters A/D 16x10b SAR, 16x12b Sigma-Delta
Oscillator Type External, Internal
Operating Temperature -40°C ~ 125°C (TA)
Grade -
Qualification AEC -
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 CY8C4127LQE-S443T is a PSoC 4 MCU from Infineon featuring an ARM Cortex-M0+ at 24MHz. It provides 128KB flash and 16KB RAM in a 40-UFQFN package. With a -40°C to 125°C range and 1.71V-5.5V supply, it includes DMA, LCD, PWM, TRNG, and a temperature sensor.

  • Extended temperature range (-40°C to 125°C) – for harsh environments.
  • Hardware TRNG – enhances security features.
  • Low voltage (1.71V) – supports energy-efficient designs.
  • Integrated LCD driver – reduces BOM for display applications.

Automotive Interior Sensors

125°C rating suits under-dash and engine-adjacent modules.

Industrial Process Control

High-temp operation in factory floors; TRNG for secure communication.

Smart Lighting

PWM and LCD drive for advanced lighting panels.

Security Systems

TRNG generates cryptographic keys for secure access.

Energy Harvesting

1.71V operation works with low-voltage harvesters.

HVAC Controllers

Wide temp range and DMA for sensor polling.

Q: What is the operating temperature?
A: -40°C to 125°C.
Q: What core?
A: ARM Cortex-M0+.
Q: What is the speed?
A: 24MHz.
Q: Does it have TRNG?
A: Yes, plus DMA, LCD, PWM, and Temp Sensor.
Q: What package?
A: 40-UFQFN.
Base Product Number : CY8C4127LQE
125°C 128KB flash 24MHz 32-bit MCU 40-UFQFN ARM Cortex-M0+ automotive industrial PSoC 4 TRNG
Q: What is the operating temperature?
A: -40°C to 125°C.
Q: What core?
A: ARM Cortex-M0+.
Q: What is the speed?
A: 24MHz.
Q: Does it have TRNG?
A: Yes, plus DMA, LCD, PWM, and Temp Sensor.
Q: What package?
A: 40-UFQFN.