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Infineon Technologies CY8C4125LQI-S433 — Discrete Semiconductors
Infineon Technologies

Infineon CY8C4125LQI-S433 PSoC 4 MCU, ARM Cortex-M0+, 24 MHz

MPNCY8C4125LQI-S433
End of Life

Infineon PSOC® 4 CY8C4100S series, CY8C4125LQI-S433, ARM® Cortex®-M0+ 32-Bit MCU, 24MHz, 32KB FLASH, 4K x 8 RAM, 34 I/O, 40-UFQFN Exposed Pad, -40°C to 85°C.

$4.01Ref. price · indicative, final on quote
CY8C4125LQI-S433 datasheet
Packaging40-UFQFN Exposed Pad
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
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Specifications

CY8C4125LQI-S433 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
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)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 the CY8C4125LQI-S433 brings to a control board

The Infineon CY8C4125LQI-S433 is a PSoC 4 MCU built around an ARM Cortex-M0+ core clocked at 24 MHz, with 32 KB of Flash and 4K x 8 of SRAM. It integrates CapSense touch-sensing, a pair of IDACs, and a 16-channel 10-bit slope / 12-bit SAR ADC — enough analog front-end to handle a capacitive touch panel, a few sensor inputs, and a closed-loop control output without an external converter. The 34 GPIOs in a 40-QFN (6x6 mm) package leave room for a modest keypad, a small character LCD, and a couple of serial buses.

24 MHz core — what it means for throughput

The Cortex-M0+ core runs at 24 MHz.

CapSense and analog — the distinguishing features

The CY8C4125LQI-S433 includes CapSense, LCD, PWM, and WDT peripherals.

Supply range and temperature grade

Supply range is 1.71 V to 5.5 V; operating temperature is -40°C to 85°C.

Active lifecycle — no LTB pressure

The CY8C4125LQI-S433 carries an Active lifecycle status and ROHS3 compliance. For a BOM line that needs a medium-density PSoC 4 with CapSense and analog I/O, this part is a current-production choice with no imminent obsolescence risk.

Frequently asked questions

What are the alternatives to CY8C4125LQI-S433?

The closest functional peer is the CY8C4245LQI-483, which doubles the core speed to 48 MHz and uses the same 34-I/O, 40-QFN footprint. The CY8C4245LQI-483 is a step up in throughput for designs that need more CPU headroom, but it shares the same CapSense and analog peripheral set.

Is CY8C4125LQI-S433 RoHS compliant?

Yes, the CY8C4125LQI-S433 is ROHS3 compliant.

What is the difference between CY8C4125LQI-S433 and CY8C4124LQI-S433?

The CY8C4125LQI-S433 has 32 KB Flash, while the CY8C4124LQI-S433 has 16 KB Flash. Both share the same Cortex-M0+ core at 24 MHz, 40-QFN package, and CapSense/analog peripheral set. The 32 KB variant is the one to pick if firmware size exceeds 16 KB.