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STMicroelectronics STM32L443CCT6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32L443CCT6 STM32L4 MCU, 80MHz Cortex-M4, 256KB Flash

MPNSTM32L443CCT6
Active

STMicroelectronics STM32L4 series STM32L443CCT6, 32-Bit Single-Core ARM Cortex-M4, 80 MHz, 256KB FLASH, 64K x 8 RAM, 1.71V–3.6V, -40°C to 85°C, 48-LQFP, Tray.

$6.3400Ref. price · indicative, final on quote
STMicroelectronics STM32L443CCT6 datasheet (PDF)
Packaging48-LQFP
RoHSROHS3 Compliant
SeriesSTM32L4
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32L443CCT6 specifications
ParameterValue
SeriesSTM32L4
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed80MHz
PackageTray
RAM size64K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, LCD, PWM, WDT
ConnectivityCANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB
Number of i (O)38
Core processorARM® Cortex®-M4
Case48-LQFP
Data convertersA/D 10x12b; D/A 2x12b
Program memory size256KB (256K x 8)

Product details

Peripheral set and analog integration

The STM32L443CCT6: The connectivity block covers CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, and USB, so the part can serve as a fieldbus node, a data-logger with external storage, or a human-machine interface controller.

38 I/O in a 48-LQFP — footprint and routing

The 48-LQFP package (7x7 mm body) exposes 38 general-purpose I/O pins, which is enough for a moderate sensor array, a small TFT display, or a CAN transceiver plus a few UARTs.

The ROHS3 compliance covers current environmental regulations. If you are planning a multi-year production run, this is a safe choice — no need to stockpile a last-time-buy.

Frequently asked questions

How does STM32L443CCT6 compare to the older STM32L151CBU6A?

The STM32L151CBU6A runs a Cortex-M3 core at 32 MHz, while the STM32L443CCT6 uses a Cortex-M4 at 80 MHz — roughly 2.5x the clock speed plus DSP and FPU instructions. The STM32L4 also adds USB, QSPI, and SAI connectivity that the lacks, and the supply range extends down to 1.71 V versus 1.8 V. If you are migrating from an design, the L4 gives you more headroom for signal processing and a wider voltage operating window.