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STMicroelectronics STM32F091CCU6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32F091CCU6 ARM Cortex-M0 MCU, 48 MHz, 256 KB Flash

MPNSTM32F091CCU6
Active

STMicroelectronics STM32F091CCU6, STM32F0 series, 32-bit ARM Cortex-M0 MCU, 48 MHz, 256 KB Flash, 32 KB SRAM, 38 I/O, CANbus/I²C/SPI/UART, 13x12b ADC, 2x12b DAC, -40 to 85°C, 48-UFQFPN (7x7 mm), Tray.

$6.1400Ref. price · indicative, final on quote
STMicroelectronics STM32F091CCU6 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32F091CCU6 specifications
ParameterValue
SeriesSTM32F0
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2V ~ 3.6V
Operating temperature-40°C ~ 85°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-UFQFN Exposed Pad
Data convertersA/D 13x12b; D/A 2x12b
Program memory size256KB (256K x 8)

Product details

Typical applications include industrial control, motor drives, sensor hubs, and IoT edge nodes where a balance of processing throughput, analog integration, and peripheral set is needed without moving to a higher-cost Cortex-M3/M4 part.

Peripheral integration — CANbus and I²C on the same die

The STM32F091CCU6 includes a CANbus controller (2.0B active) alongside I²C, SPI, and multiple UART/USART interfaces, which simplifies BOM consolidation in designs that need both a fieldbus and a local sensor bus. The 13-channel 12-bit ADC and 2-channel 12-bit DAC reduce the need for external analog front-end components in control-loop and sensor-fusion applications. Internal oscillator support eliminates an external crystal in less timing-critical designs, though the PLL still needs a clean reference for 48 MHz operation.

Package and thermal — 48-UFQFPN exposed pad

The base product number STM32F091 covers multiple Flash and pin-count variants, so cross-referencing the full order code is essential for fit.

Frequently asked questions

Where can I buy STM32F091CCU6 available via RFQ confirmation?

STM32F091CCU6 is available to order through independent distribution. Submit an RFQ for current availability and pricing — stock levels and lead times are confirmed at quote time, not on a product page.

Is STM32F091CCU6 active or obsolete?

The STM32F091CCU6 is listed as active by STMicroelectronics. No end-of-life notice has been issued, so it remains qualified for new designs and volume production.

What is the closest pin-compatible alternative to STM32F091CCU6?

Within the STM32F0 series, the STM32F091RCT6 is a close functional match but has a different pin count and package (64-pin LQFP). For a pin-compatible drop-in, look at other 48-UFQFPN variants in the STM32F091 line — verify the Flash and SRAM sizes against your firmware footprint.

What is STM32F091CCU6's listed speed?

The core runs at 48 MHz maximum, which is the ceiling for the ARM Cortex-M0 in this STM32F0 part. That clock rate supports most control-loop and sensor-fusion tasks without needing a higher-frequency Cortex-M3 or M4.