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STMicroelectronics STM32G081CBU6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32G081CBU6 ARM Cortex-M0+ MCU, 64 MHz, 128 KB Flash

MPNSTM32G081CBU6
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STMicroelectronics STM32G0 series, ARM® Cortex®-M0+ 32-Bit MCU, 64MHz, 128KB Flash, 36K x 8 RAM, 1.7V-3.6V, -40°C to 85°C, 48-UFQFN Exposed Pad, Tray.

$2.2176Ref. price · indicative, final on quote
STMicroelectronics STM32G081CBU6 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32G081CBU6 specifications
ParameterValue
SeriesSTM32G0
MountingSurface Mount
Oscillator typeExternal, Internal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.7V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed64MHz
PackageTray
RAM size36K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
ConnectivityHDMI-CEC, I2C, IrDA, LINbus, SPI, UART/USART, USB Type-C™ (Power Delivery)
Number of i (O)44
Core processorARM® Cortex®-M0+
Case48-UFQFN Exposed Pad
Data convertersA/D 17x12b; D/A 2x12b
Program memory size128KB (128K x 8)

Product details

MCU selection note — STM32G081CBU6

The 48-UFQFN package with exposed pad (7x7 mm) provides 44 I/Os and includes a 17-channel 12-bit ADC and dual 12-bit DACs.

At 64 MHz the Cortex-M0+ delivers single-cycle I/O and fast interrupt response, suited for real-time control loops and communication protocol handling. The 128 KB Flash is sized for mid-complexity firmware stacks, including USB Type-C Power Delivery and multiple serial interfaces (I2C, SPI, UART/USART, LIN, IrDA).

That means no last-time-buy pressure and full manufacturer support for new designs. For dual-sourcing resilience, the STM32G0 family includes pin-compatible density variants — qualify the alternate now rather than single-source the BOM line.

Package and power delivery

Supply decoupling should follow the reference design: a 100 nF ceramic per VDD pair plus a 4.7 µF bulk capacitor on the main rail.

Frequently asked questions

What is the closest pin-compatible alternative to STM32G081CBU6?

Within the STM32G0 series, the STM32G071CB (same package and pinout) offers a similar peripheral set with slightly different memory options. Check the STM32G0 reference manual for exact compatibility — the base product number STM32G081 shares the same footprint across density variants.