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STMicroelectronics STM32L4R9VIT6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32L4R9VIT6 STMicroelectronics MCU ARM Cortex-M4 120MHz

MPNSTM32L4R9VIT6
Active

STMicroelectronics STM32L4R series, ARM® Cortex®-M4, 32-Bit Single-Core, 120MHz, 2MB (2M x 8) FLASH, 640K x 8 RAM, 100-LQFP, -40°C ~ 85°C.

$17.4400Ref. price · indicative, final on quote
STMicroelectronics STM32L4R9VIT6 datasheet (PDF)
Packaging100-LQFP
RoHSROHS3 Compliant
SeriesSTM32L4R
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32L4R9VIT6 specifications
ParameterValue
SeriesSTM32L4R
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)77
Core processorARM® Cortex®-M4
Case100-LQFP
Data convertersA/D 14x12b; D/A 2x12b
Program memory size2MB (2M x 8)

Product details

The STM32L4R9VIT6: ARM Cortex-M4 core at 120 MHz, 2 MB Flash, 640 KB SRAM, 77 I/O, 100-LQFP.

ST lists the STM32L4R9VIT6 as Active. The ROHS3 compliance is current — no exemption expiry to track.

640 KB SRAM and 2 MB Flash — sizing the memory budget

2 MB Flash and 640 KB SRAM on-chip. EBI/EMI interface supports external memory expansion.

Connectivity and analog — one chip covers the system bus

The peripheral set includes CAN for industrial/automotive networks, USB OTG for host or device mode, multiple SPI/I²C/UART for sensors and radios, and an SAI for I²S audio.

100-LQFP (14x14 mm) package with 77 I/O.

Frequently asked questions

What is the closest functional second-source to STM32L4R9VIT6?

The STM32L151CBU6A is a different series (STM32L1) with a Cortex-M3 core at 32 MHz and 37 I/Os. It is not a pin-compatible or performance-equivalent substitute for the STM32L4R9VIT6. For a drop-in replacement within the same L4R series, look at the STM32L4R5VIT6 — same package and pinout, but with less Flash and SRAM.

Can STM32L4R9VIT6 be used as a replacement for STM32L4R5VIT6?

Yes, the STM32L4R9VIT6 is a higher-density variant in the same L4R series, with 2 MB Flash and 640 KB SRAM versus the smaller memory options of the L4R5. It is pin-compatible in the 100-LQFP package and runs the same peripheral set, so it can serve as a direct upgrade path without a PCB change.