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STMicroelectronics STM32L433CCU6TR — Microcontrollers & Processors (MCU / MPU / DSP)

STM32L433CCU6TR STM32L4 ARM Cortex-M4 MCU, 80 MHz

MPNSTM32L433CCU6TR
Active

STMicroelectronics STM32L433CCU6TR, STM32L4 series, 32-bit ARM Cortex-M4 MCU, 80 MHz, 256 KB Flash, 64 KB SRAM, 48-UFQFN exposed pad, -40 to 85°C, Tape & Reel.

$4.0618Ref. price · indicative, final on quote
STMicroelectronics STM32L433CCU6TR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32L433CCU6TR 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
PackageTape & Reel (TR)
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-UFQFN Exposed Pad
Data convertersA/D 10x12b; D/A 2x12b
Program memory size256KB (256K x 8)

Product details

Peripheral set and I/O budget

With 38 GPIOs in the 48-UFQFN package, you get CANbus, two I²C, three USARTs, two SPIs, a QSPI for external Flash, and a USB 2.0 FS device. There's also an LCD segment driver controller on die — handy for a local display on a pump controller or a thermostat.

Industrial temperature and package reality

The 48-UFQFN with exposed pad (7x7 mm) needs a solid via-stitch under the paddle to pull heat into the ground plane — skip that and the junction creeps above the 85°C limit at full I/O load.

That means no last-time-buy scramble and no forced redesign for the next production run.

Frequently asked questions

Is STM32L433CCU6TR active or obsolete?

The lifecycle status is Active.

What is the difference between STM32L433CCU6TR and STM32L433CCU6?

The two are electrically identical. The TR suffix on this variant indicates Tape & Reel packaging for automated assembly; the non-TR version ships in trays or tubes. Both share the same die, Flash, SRAM, and temperature grade.