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Infineon Technologies CY8C4745LQI-S411 — Microcontrollers & Processors (MCU / MPU / DSP)

CY8C4745LQI-S411 PSoC 4 MCU, 48MHz ARM Cortex-M0+

MPNCY8C4745LQI-S411
End of Life

Infineon PSoC® 4 CY8C4700S series, ARM® Cortex®-M0+ 32-bit MCU, 48 MHz, 32KB Flash, 4K x 8 RAM, CapSense, LCD, 19 I/O, 1.71V–5.5V, -40°C to 85°C, 24-UFQFN Exposed Pad.

$6.26Ref. price · indicative, final on quote
Infineon Technologies CY8C4745LQI-S411 datasheet (PDF)
Packaging24-UFQFN Exposed Pad
RoHSROHS3 Compliant
SeriesPSOC® 4 CY8C4700S
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

CY8C4745LQI-S411 specifications
ParameterValue
SeriesPSOC® 4 CY8C4700S
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 5.5V
Operating temperature-40°C ~ 85°C (TA)
Speed48MHz
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)19
Core processorARM® Cortex®-M0+
Case24-UFQFN Exposed Pad
Data convertersA/D 16x10b
Program memory size32KB (32K x 8)

Product details

PSoC 4 MCU with integrated CapSense and LCD drive

The CY8C4745LQI-S411 is a PSoC® 4 MCU built around a 32-bit ARM Cortex-M0+ core running at 48 MHz.

CapSense and LCD drive — what it saves on the BOM

The on-chip CapSense peripheral handles capacitive touch buttons, sliders, and proximity sensing without an external controller IC. The LCD drive supports direct connection to segment LCD glass, removing the need for a dedicated display driver. For a control panel with a small LCD and capacitive touch, this part can replace two external ICs plus their supporting passives — a meaningful cost and space saving on a compact 24-QFN (4x4 mm) board.

Connectivity and I/O for sensor aggregation

The 10-bit ADC with 16 channels handles analog sensor inputs directly.

The 24-QFN package with exposed pad helps pull heat into the PCB ground plane, keeping the die cool in enclosed or warm environments.

Frequently asked questions

Is CY8C4745LQI-S411 RoHS compliant?

Yes, it is ROHS3 compliant per Infineon's listing.

Does CY8C4745LQI-S411 support CapSense?

Yes, CapSense is an integrated peripheral on this MCU, along with LCD drive, brown-out detect, LVD, POR, PWM, and WDT.

What is the closest functional alternative to CY8C4745LQI-S411?

The CY8C4245LQI-483 is a close functional sibling — same 48 MHz Cortex-M0 core, same Flash and RAM sizes, same CapSense and LCD peripherals, but in a larger 34-I/O package with a 12-bit ADC instead of 10-bit. The CY8C4745LQI-S411 offers a smaller footprint (24-QFN vs 40-QFN) and a wider supply range.