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Infineon Technologies CY8C4125LQI-S423T — DC-DC Power Modules
Infineon Technologies

Infineon CY8C4125LQI-S423T PSoC 4 MCU, 24MHz ARM Cortex-M0+

MPNCY8C4125LQI-S423T
End of Life

Infineon PSoC® 4 CY8C4100S series CY8C4125LQI-S423T, 32-bit ARM Cortex-M0+ MCU, 24MHz, 32KB Flash, 4K x 8 RAM, 34 I/O, 40-QFN (6x6), -40 to 85°C.

$3.05Ref. price · indicative, final on quote
CY8C4125LQI-S423T datasheet
Packaging40-UFQFN Exposed Pad
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

CY8C4125LQI-S423T Technical Specifications
ParameterValue
SeriesPSOC® 4 CY8C4100S
Mounting typeSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 5.5V
Operating temperature-40°C ~ 85°C (TA)
Speed24MHz
PackageTape & Reel (TR); Cut Tape (CT)
RAM size4K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, CapSense, LCD, LVD, POR, PWM, WDT
ConnectivityI2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
Number of i (O)34
Core processorARM® Cortex®-M0+
Case40-UFQFN Exposed Pad
Data convertersA/D 16x10b Slope, 16x12b SAR; D/A 2xIDAC
Program memory size32KB (32K x 8)

Product details

What this PSoC 4 brings to a BOM line

The Infineon CY8C4125LQI-S423T is a 32-bit ARM Cortex-M0+ MCU from the PSoC 4 series, clocked at 24 MHz with 32 KB of Flash and 4K x 8 of RAM. It integrates CapSense touch sensing, LCD segment drive, and a full set of serial interfaces — I2C, SPI, UART/USART, LINbus, IrDA, Microwire, SmartCard, and SSP — all in a 40-pin QFN with an exposed pad for thermal management. The 34 general-purpose I/O lines and the internal oscillator keep external component count low for cost-sensitive control panels, sensor hubs, and human-machine interfaces.

CapSense and LCD drive — what they save on the BOM

The integrated CapSense block eliminates a dedicated touch-controller IC for capacitive touch buttons, sliders, or proximity sensors. The LCD drive peripheral can directly segment-drive a small character or segment LCD display without an external driver chip. For a control panel with four touch buttons and a 16-segment display, this MCU replaces three separate ICs — the touch controller, the LCD driver, and the main MCU — consolidating the BOM and reducing board area.

Lifecycle and sourcing posture

The CY8C4125LQI-S423T carries an Active lifecycle status with ROHS3 compliance.

Frequently asked questions

Is CY8C4125LQI-S423T RoHS compliant?

Yes, it is ROHS3 compliant.

What are alternatives to CY8C4125LQI-S423T?

For applications needing Bluetooth, the CY8C4247LQI-BL473 adds BLE at 48 MHz with 36 I/O.