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STMicroelectronics STM32L4S5VIT6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32L4S5VIT6 STM32 MCU, ARM Cortex-M4, 120 MHz, 2 MB Flash

MPNSTM32L4S5VIT6
Active

STMicroelectronics STM32L4S series, STM32L4S5VIT6, ARM Cortex-M4, 32-Bit Single-Core, 120MHz, 2MB Flash, 640K x 8 RAM, 100-LQFP, -40°C ~ 85°C.

$16.1500Ref. price · indicative, final on quote
Packaging100-LQFP
RoHSROHS3 Compliant
SeriesSTM32L4S
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32L4S5VIT6 specifications
ParameterValue
SeriesSTM32L4S
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed120MHz
PackageTray
RAM size640K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityCANbus, EBI/EMI, I²C, IrDA, LINbus, MMC/SD, SAI, SPI, UART/USART, USB OTG
Number of i (O)83
Core processorARM® Cortex®-M4
Case100-LQFP
Data convertersA/D 16x12b; D/A 2x12b
Program memory size2MB (2M x 8)

Product details

120 MHz Cortex-M4 with 2 MB Flash — where the headroom lives

That memory density — 2 MB for firmware plus 640 KB for data — means you can hold a full application image with OTA staging space, or run a real-time OS with several large frame buffers, without adding external memory. The 83 I/Os in a 100-LQFP package give you enough pins to route a parallel display, a camera interface, and a CAN bus alongside USB OTG and multiple SPI/I²C peripherals, all without multiplexing conflicts on the first pass.

The ROHS3 compliance is current, so no conflict with EU or California regulatory updates.

100-LQFP — rework-friendly footprint

The 100-LQFP (14x14 mm body) is a gull-wing leaded package. No underfill required, no X-ray inspection needed after reflow.

Peripheral set — what connects without glue

Connectivity covers CANbus, USB OTG, multiple SPI and I²C channels, plus SAI for audio and EBI/EMI for external parallel memory or a display controller.

Frequently asked questions

What is the difference between STM32L4S5VIT6 and STM32L151CBU6A?

The STM32L4S5VIT6 runs a Cortex-M4 core at 120 MHz with 2 MB Flash and 640 KB SRAM, while the STM32L151CBU6A uses a Cortex-M3 at 32 MHz with smaller memory. The L4S part also offers more I/Os (83 vs 37), USB OTG, and a wider supply range down to 1.71 V. They are not pin-compatible — the L4S comes in a 100-LQFP versus the 's smaller package — so a board redesign is needed to swap between them.