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Infineon Technologies CY8C4125AZI-M433 — Microcontrollers & Processors (MCU / MPU / DSP)

Infineon CY8C4125AZI-M433 PSoC 4 MCU, ARM Cortex-M0, 24 MHz

MPNCY8C4125AZI-M433
End of Life

Infineon PSoC® 4 CY8C41xx - M series, ARM® Cortex®-M0, 32-bit, 24 MHz, 32 KB Flash, 4K x 8 RAM, 38 I/O, 1.71 V ~ 5.5 V, -40°C ~ 85°C, 48-TQFP (7x7).

$3.69Ref. price · indicative, final on quote
Infineon Technologies CY8C4125AZI-M433 datasheet (PDF)
Packaging48-LQFP
RoHSROHS3 Compliant
SeriesPSOC® 4 CY8C41xx - M
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

CY8C4125AZI-M433 specifications
ParameterValue
SeriesPSOC® 4 CY8C41xx - M
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 5.5V
Operating temperature-40°C ~ 85°C (TA)
Speed24MHz
PackageTray
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)38
Core processorARM® Cortex®-M0
Case48-LQFP
Data convertersA/D 16x12b SAR; 2xIDAC
Program memory size32KB (32K x 8)

Product details

24 MHz ARM Cortex-M0 with integrated CapSense and analog

The CY8C4125AZI-M433: Integrates a CapSense block, a 16-channel 12-bit SAR ADC, and two IDAC outputs for touch-sensing and analog sensor interfaces.

32 KB of program Flash and 4 KB of SRAM fit firmware for CapSense tuning tables, a Modbus RTU stack, or a simple PID loop.

For procurement planning, this removes the urgency to stockpile or qualify a drop-in replacement for ongoing builds.

48-TQFP package and 38 I/O — board layout considerations

The 38 I/O count includes the CapSense pins, which need clean routing away from switching nodes to maintain touch sensitivity.

Frequently asked questions

Is CY8C4125AZI-M433 compatible with PSoC Creator?

Yes, as a PSoC 4 family member, the CY8C4125AZI-M433 is supported in Infineon's PSoC Creator IDE, which provides graphical configuration for the CapSense, ADC, and digital peripherals. The toolchain generates the hardware abstraction layer and firmware framework automatically.

When sourcing CY8C4125AZI-M433, what is the closest functional second-source?

The CY8C4245LQI-483 is a close sibling in the PSoC 4 family with the same ARM Cortex-M0 core, 32 KB Flash, and similar peripheral set (CapSense, 12-bit ADC, IDAC). It runs at 48 MHz (vs. 24 MHz) and comes in a 48-QFN package instead of TQFP. While not pin-compatible, it shares the same software architecture and can serve as a performance upgrade path if the design can accommodate the QFN footprint.