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STMicroelectronics STM32L433CCT6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32L433CCT6 STM32L4 MCU, ARM Cortex-M4 80MHz, 256KB Flash

MPNSTM32L433CCT6
Active

ST STM32L4 series, ARM Cortex-M4, 32-bit, 80MHz, 256KB Flash, 64K x 8 RAM, 48-LQFP, -40°C~85°C.

$7.3000Ref. price · indicative, final on quote
STMicroelectronics STM32L433CCT6 datasheet (PDF)
Packaging48-LQFP
RoHSROHS3 Compliant
SeriesSTM32L4
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32L433CCT6 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

The 64 KB SRAM gives you room for double-buffered ADC data and a modest RTOS heap. If your firmware runs a floating-point library, the M4's FPU cuts the cycle count on math-heavy tasks versus an M3 or M0+.

Connectivity and peripheral mix for industrial and IoT edge designs

The STM32L433CCT6 carries CANbus for industrial fieldbus bridging, USB for direct host or device connection, and QSPI for high-speed external memory or display interfaces. The 38 GPIOs in the 48-pin package leave enough headroom for a keypad, a small TFT, and a few status LEDs alongside the serial buses.

The STM32L4 series is a current-generation platform from ST, so roadmap continuity is solid — no imminent EOL risk.

Frequently asked questions

Is STM32L433CCT6 RoHS compliant?

No additional compliance paperwork is needed for lead-free assembly.

What is the difference between STM32L433CCT6 and STM32L433RCT6?

The STM32L433CCT6 comes in a 48-LQFP package (7x7 mm) with 38 I/Os, while the STM32L433RCT6 uses a 64-LQFP package with more I/O pins. The core, memory, and peripheral set are identical — the package and pin count are the deciding factor for board area and signal count.

Can STM32L433CCT6 be used with an external crystal?

Yes, the MCU supports external crystals for the HSE (high-speed external) and LSE (low-speed external) oscillators. The internal oscillator is also available as a clock source, but an external crystal provides better frequency accuracy for precision timing or USB operation.