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STMicroelectronics STM32L486QGI6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32L486QGI6 STM32L4 MCU, 80MHz, 1MB Flash, 132-UFBGA

MPNSTM32L486QGI6
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STMicroelectronics STM32L486QGI6, STM32L4 series, ARM Cortex-M4 32-bit MCU, 80MHz, 1MB Flash, 128K x 8 SRAM, 1.71V-3.6V, 109 I/O, 132-UFBGA (7x7), -40°C to 85°C.

$12.0600Ref. price · indicative, final on quote
Packaging132-UFBGA
RoHSROHS3 Compliant
SeriesSTM32L4
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32L486QGI6 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 size128K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, LCD, PWM, WDT
ConnectivityCANbus, EBI/EMI, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB OTG
Number of i (O)109
Core processorARM® Cortex®-M4
Case132-UFBGA
Data convertersA/D 19x12b; D/A 2x12b
Program memory size1MB (1M x 8)

Product details

80 MHz Cortex-M4 with 1 MB Flash — the ultra-low-power workhorse

It packs 1 MB of Flash and 128 KB of SRAM, enough for a full sensor-fusion stack, audio processing, or a small RTOS with a TCP/IP stack. Connectivity covers CANbus, USB OTG, QSPI, SAI (serial audio interface), and multiple I²C/SPI/UART ports, so it can talk to a CAN transceiver, an audio codec, and a QSPI NOR Flash on the same die without external bridges.

132-UFBGA (7x7) — layout and thermal reality

That is a dense BGA — route the outer two rows with a single via-in-pad escape; inner rows need microvias or a four-layer PCB. The exposed thermal pad in the centre must be stitched to a ground plane with at least nine vias to keep the junction below 85°C at full tilt. No heatsink fits this footprint; the PCB copper is the heatsink.

What the 80 MHz and peripherals mean for your design

The 80 MHz Cortex-M4 with FPU handles a 1024-point FFT in under 1 ms at 80 MHz — enough for real-time vibration analysis or a motor-control current loop. The LCD controller and the embedded Brown-out Detect/Reset reduce external BOM count for a handheld UI.

Frequently asked questions

What are the alternatives to STM32L486QGI6?

Within the STM32L4 family, the STM32L476 series shares the same 132-UFBGA footprint and peripheral set but offers 512 KB Flash and 96 KB SRAM versus the 1 MB / 128 KB on the L486. The STM32L151CBU6A is a different generation (Cortex-M3, 32 MHz, lower I/O count) and not a pin-compatible alternative — a board redesign would be required.

What is STM32L486QGI6's listed speed?

The core runs at 80 MHz with a single-cycle multiply-and-accumulate. That speed, combined with the FPU, makes it a fit for DSP workloads like sensor fusion or audio processing that would strain a Cortex-M3 at 32 MHz.

Is STM32L486QGI6 compatible with STM32L4xx standard peripherals?

Yes. The STM32L486QGI6 uses the same STM32L4 peripheral library (HAL/LL) as other STM32L4xx parts. The CAN, USB OTG, QSPI, SAI, and I²C/SPI/UART blocks are register-compatible across the series, so code written for an STM32L476 or L496 ports directly with a device-header change.