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STMicroelectronics STM32L451VEI6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32L451VEI6 STM32L4 MCU, ARM Cortex-M4 80MHz, 512KB Flash

MPNSTM32L451VEI6
Active

STMicroelectronics STM32L451VEI6, STM32L4 series, 32-bit ARM Cortex-M4 single-core MCU, 80 MHz, 512 KB Flash, 160 K x 8 RAM, 100-UFBGA, -40 to 85 °C, 1.71 V to 3.6 V.

$10.5700Ref. price · indicative, final on quote
STMicroelectronics STM32L451VEI6 datasheet (PDF)
Packaging100-UFBGA
RoHSROHS3 Compliant
SeriesSTM32L4
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32L451VEI6 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 size160K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, PWM, WDT
ConnectivityCANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, UART/USART
Number of i (O)83
Core processorARM® Cortex®-M4
Case100-UFBGA
Data convertersA/D 16x12b; D/A 1x12b
Program memory size512KB (512K x 8)

Product details

80 MHz Cortex-M4 with FPU in a 100-ball BGA

The 100-UFBGA (7x7 mm) package brings 83 I/O lines to a compact footprint, making it a fit for space-constrained battery-operated instruments and portable medical devices.

Supply range and peripheral mix for system integration

The connectivity set includes CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, and UART/USART — enough to handle industrial fieldbus, external serial flash, audio codecs, and SD card logging without glue logic. On-chip data converters are A/D 16x12-bit and D/A 1x12-bit, adequate for analog sensor readout and control-loop feedback.

Frequently asked questions

Does the STM32L451VEI6 have USB 2.0 connectivity?

USB 2.0 is not listed in the connectivity set for this part. The available interfaces are CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, and UART/USART.

What are the closest alternatives to the STM32L451VEI6 if it is out of stock?

A functional alternative within the STM32 portfolio is the STM32L151CBU6A, which uses an ARM Cortex-M3 core at 32 MHz with 37 I/O and a smaller memory footprint. It is not a pin-compatible drop-in — the STM32L451VEI6 offers higher core speed (80 MHz), larger Flash (512 KB), more SRAM (160 KB), and a denser I/O count (83) in a different package. For a closer parametric match within the same STM32L4 family, consider other STM32L45x variants with similar peripheral sets and package options.