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Infineon Technologies CY8C4125AZI-M433 — Logic ICs
Infineon Technologies

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
CY8C4125AZI-M433 datasheet
Packaging48-LQFP
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.
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Specifications

CY8C4125AZI-M433 Technical Specifications
ParameterValue
SeriesPSOC® 4 CY8C41xx - M
Mounting typeSurface 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.

Active lifecycle — no near-term LTB risk

For procurement planning, this removes the urgency to stockpile or qualify a drop-in replacement for ongoing builds. The part is ROHS3 compliant, which aligns with current European and Asian regulatory requirements for new equipment.

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

Housed in a 48-TQFP (7x7 mm) with 38 general-purpose I/O, this package is a standard fine-pitch QFP that routes easily on two-layer boards. 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.