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STMicroelectronics STM32L4R5QGI6STR — Microcontrollers & Processors (MCU / MPU / DSP)

ST STM32L4R5QGI6STR ARM Cortex-M4 MCU, 120 MHz, 1 MB Flash

MPNSTM32L4R5QGI6STR
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ST STM32L4 series, ARM Cortex-M4 32-bit MCU, 120 MHz, 1 MB Flash, 640 KB RAM, 110 I/O, CANbus, USB OTG, 132-UFBGA, -40 to 85 °C.

$11.2332Ref. price · indicative, final on quote
STMicroelectronics STM32L4R5QGI6STR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32L4R5QGI6STR 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)
Speed120MHz
PackageTape & Reel (TR)
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)110
Core processorARM® Cortex®-M4
Case132-UFBGA
Data convertersA/D 16x12b; D/A 2x12b
Program memory size1MB (1M x 8)

Product details

STM32L4R5QGI6STR — 120 MHz Cortex-M4 with 1 MB Flash

The ST STM32L4R5QGI6STR is a 32-bit ARM Cortex-M4 microcontroller from the STM32L4 ultra-low-power series, clocked at 120 MHz. It carries 1 MB of Flash and 640 KB of RAM on-chip, with 110 I/O lines and a rich peripheral set including CANbus, USB OTG, multiple SPI/I²C/UART interfaces, and a 16-channel 12-bit ADC plus a 2-channel 12-bit DAC.

Package and layout note

The 132-UFBGA (7x7 mm) uses a fine-pitch BGA. A multi-layer PCB with via-in-pad or microvia capability is required, plus X-ray inspection after reflow.

Frequently asked questions

What is the closest pin-compatible alternative to STM32L4R5QGI6STR?

The STM32L4R5 family includes multiple density options in the same 132-UFBGA package. A pin-compatible sibling with different Flash or RAM can serve as a second source without a PCB layout change, though exact order codes should be verified against the family cross-reference.

What is STM32L4R5QGI6STR's listed speed?

The core runs at 120 MHz, which is the maximum clock for this Cortex-M4 device in the STM32L4 series.

What series is STM32L4R5QGI6STR from?

It belongs to the STM32L4 series, ST's ultra-low-power ARM Cortex-M4 family.