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STMicroelectronics STM32F091CBT7 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32F091CBT7 ARM Cortex-M0 MCU, 48 MHz, 128 KB Flash

MPNSTM32F091CBT7
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STMicroelectronics STM32F091CBT7, 32-Bit Single-Core ARM Cortex-M0 MCU, 48 MHz, 128 KB Flash, 32K x 8 SRAM, 38 I/O, 48-LQFP, -40°C~105°C, 2V~3.6V supply, CANbus, I²C, SPI, UART, A/D 13x12b, D/A 2x12b.

$6.1300Ref. price · indicative, final on quote
STMicroelectronics STM32F091CBT7 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32F091CBT7 specifications
ParameterValue
SeriesSTM32F0
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2V ~ 3.6V
Operating temperature-40°C~105°C(TA)
Speed48MHz
PackageTray
RAM size32K x 8
Core size32-Bit Single-Core
PeripheralsDMA, I²S, POR, PWM, WDT
ConnectivityCANbus, I²C, IrDA, LINbus, SPI, UART/USART
Number of i (O)38
Core processorARM® Cortex®-M0
Case48-LQFP
Data convertersA/D 13x12b; D/A 2x12b
Program memory size128KB (128K x 8)

Product details

The Cortex-M0 core provides a balance of processing throughput and low power for cost-sensitive control applications. The 128 KB Flash is sized for firmware images that include a bootloader, application code, and a small parameter storage area, while the 32 KB SRAM supports moderate data buffers and stack usage typical of motor control, sensor fusion, or human-machine interface nodes.

Package and supply — design-in checklist

The 48-LQFP footprint is common across the STM32F0 value-line density options, so a board layout can accommodate multiple Flash/RAM variants without a PCB spin.

Frequently asked questions

What is the difference between STM32F091CBT7 and STM32F091CBT6?

The STM32F091CBT7 and STM32F091CBT6 are pin-compatible siblings in the same STM32F091 family. The CBT7 is the extended-temperature variant for industrial or automotive-adjacent environments.

Does STM32F091CBT7 have an Ethernet interface?

No — the STM32F091CBT7 does not include an Ethernet MAC or PHY. Its connectivity set is CANbus, I²C, IrDA, LINbus, SPI, and UART/USART.

What is the closest pin-compatible alternative to STM32F091CBT7?

For designs that need the wider temperature range, the CBT7 is the correct choice.