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

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

MPN CY8C4125AZI-M433
End of Life Spot Stock · 24-48h Dispatch 100% Original Sealed

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).

In Stock: 2,500 pcs
MOQ: 1 pcs
Logistics: DHL / FedEx DAP (Global Express · 3-7d) Russia & CIS DDP (Door-to-Door Cleared)
Dispatch: Shenzhen / HK
Unit Price (USD)
$3.69 / pc
Direct Purchase Ready
Volume Pricing Breaks Confirmed upon quotation
1+ pcs
$3.69
10+ pcs
$3.32
30+ pcs
$3.03
100+ pcs
$2.73
500+ pcs
$2.55
1,000+ pcs
$2.40
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$3.69 / ea

2,500 in stock — maximum per order · 3–4 days lead time

$3.32 / ea from 10 pcs
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100% Original Sealed 45x Microscope QC 30-Day Warranty · COC USD T/T & PI · DAP/DDP
[SPEC] Essential Parameters Snapshot Full Specifications (17)
Package / Case 48-LQFP
Supply Voltage 1.71V ~ 5.5V
Speed / Frequency 24MHz
Memory / RAM 4K x 8

Full Technical Specifications

17 Parameters
CY8C4125AZI-M433 specifications
Parameter / AttributeSpecification / Value
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)
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Technical Details & Description

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.

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