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STMicroelectronics STM32L433CCT3 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32L433CCT3 STM32L4 MCU, 80MHz Cortex-M4, 256KB Flash

MPNSTM32L433CCT3
Active

STMicroelectronics STM32L4 series, ARM® Cortex®-M4, 32-Bit Single-Core, 80MHz, 256KB Flash, 64K x 8 RAM, 1.71V ~ 3.6V, -40°C ~ 125°C, 48-LQFP (7x7), Surface Mount.

$6.9600Ref. price · indicative, final on quote
STMicroelectronics STM32L433CCT3 datasheet (PDF)
Packaging48-LQFP
RoHSROHS3 Compliant
SeriesSTM32L4
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32L433CCT3 specifications
ParameterValue
SeriesSTM32L4
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 3.6V
Operating temperature-40°C ~ 125°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

80 MHz Cortex-M4 in an ultra-low-power footprint

125°C junction — industrial and under-hood ready

The 48-LQFP (7x7 mm) package keeps board area small while offering enough I/O for CANbus, SPI, and multiple UART peripherals.

Mixed-signal and connectivity peripherals

Ten 12-bit ADC channels and two 12-bit DAC channels cover analog sensor acquisition and control-loop output. The peripheral set includes CANbus, QSPI, SAI audio, and USB, plus an LCD driver for segment displays. Brown-out detect and reset are built in, reducing external supervisor IC cost.

Frequently asked questions

What is the difference between STM32L433CCT3 and the STM32L151CBU6A?

The STM32L433CCT3 runs an ARM Cortex-M4 at 80 MHz with FPU, compared to the STM32L151CBU6A's Cortex-M3 at 32 MHz. The L4 part also extends the operating temperature range to 125°C versus 85°C, and adds CANbus, QSPI, and SAI connectivity that the lacks.

What is STM32L433CCT3's listed speed?

The core processor runs at 80 MHz, which is the maximum clock for this STM32L4 device.

How to program STM32L433CCT3?

The part supports standard ARM Serial Wire Debug (SWD) for programming and debugging. ST's ST-Link probe or any CMSIS-DAP compatible debugger connects to the SWDIO and SWCLK pins. The internal oscillator is enabled by default, so no external clock source is required for initial firmware load.