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STMicroelectronics STM32L4Q5CGU6 — Microcontrollers & Processors (MCU / MPU / DSP)
STMicroelectronics

STM32L4Q5CGU6 ARM Cortex-M4 MCU, 120 MHz, 1 MB Flash

MPNSTM32L4Q5CGU6
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STMicroelectronics STM32L4 series, STM32L4Q5CGU6, 32-Bit Single-Core ARM Cortex-M4, 120MHz, 1MB (1M x 8) FLASH, 320K x 8 RAM, 48-UFQFN Exposed Pad, -40°C~85°C.

$14.2700Ref. price · indicative, final on quote
STM32L4Q5CGU6 datasheet
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Specifications

STM32L4Q5CGU6 Technical Specifications
ParameterValue
SeriesSTM32L4
Mounting typeSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed120MHz
PackageTray
RAM size320K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
ConnectivityCANbus, EBI/EMI, I²C, IrDA, LINbus, MMC/SD, SAI, SPI, UART/USART, USB OTG
Core processorARM® Cortex®-M4
Case48-UFQFN Exposed Pad
Data convertersA/D 16x12b; D/A 2x12b
Program memory size1MB (1M x 8)

Product details

Peripheral set and connectivity

The peripheral list includes a full-set brown-out detect, DMA, LCD controller, POR, PWM, and watchdog.

Package and thermal design

Housed in a 48-UFQFN with exposed pad (7x7 mm body), this part demands a thermal via stitch under the paddle if the MCU drives more than a few hundred mA continuous through the I/O banks. The exposed pad is the primary heat path; leaving it floating or poorly soldered will push junction temperature above the 85°C industrial ceiling in a sealed enclosure.

Lifecycle and sourcing posture

The base product number STM32L4Q5 covers a range of Flash and RAM density options in the same 48-UFQFN footprint, so a pin-compatible drop-in with different memory sizing is possible within the family without a board spin.

Frequently asked questions

What is the closest pin-compatible alternative to the STM32L4Q5CGU6 in the same family?

Within the STM32L4Q5 base number, the 48-UFQFN footprint supports multiple Flash and SRAM density variants. The STM32L4Q5CGU6 is the 1 MB Flash / 320 KB SRAM option; lower-density siblings (e.g., 512 KB Flash) share the same pinout and can serve as a second source or cost-reduction path without a PCB change.