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STMicroelectronics STM32F091RCH7 — Microcontrollers & Processors (MCU / MPU / DSP)

ST STM32F091RCH7 ARM Cortex-M0 MCU, 48 MHz, 256 KB Flash

MPNSTM32F091RCH7
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STMicroelectronics STM32F091RCH7, STM32F0 series, 32-bit ARM Cortex-M0 MCU, 48 MHz, 256 KB Flash, 32K x 8 RAM, 52 I/O, 64-UFBGA, -40 to 105 °C.

$3.5089Ref. price · indicative, final on quote
STMicroelectronics STM32F091RCH7 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32F091RCH7 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)52
Core processorARM® Cortex®-M0
Case64-UFBGA
Data convertersA/D 19x12b; D/A 2x12b
Program memory size256KB (256K x 8)

Product details

The STM32F091RCH7 is a 32-bit ARM Cortex-M0 MCU from the STM32F0 series, running at 48 MHz with 256 KB Flash and 32K x 8 RAM.

The 48 MHz clock on the Cortex-M0 core is the processing ceiling for this part. For a typical sensor-fusion or motor-control loop running from Flash with zero-wait states, that translates to roughly 48 MIPS.

256 KB of Flash is enough for a moderate application stack: a FreeRTOS kernel, a CANopen or Modbus stack, plus the application logic. The 32 KB of SRAM supports a few hundred bytes of heap and stack per task.

Rated from -40 to 105 °C, this MCU is specified for industrial environments.

The STM32F091RCH7 carries an EOL hot lifecycle status, meaning STMicroelectronics has marked this part for end-of-life. Production is still active per the latest status entry, but the window for last-time-buy is closing.

Frequently asked questions

What is the closest pin-compatible alternative to STM32F091RCH7?

The STM32F091RCT6 is a pin-compatible alternative within the same STM32F091 family, offering the same 256 KB Flash and 48 MHz core but in an LQFP-64 package instead of the 64-UFBGA.

What is the datasheet and full technical specifications for STM32F091RCH7?

The STM32F091RCH7 is a 32-bit ARM Cortex-M0 MCU running at 48 MHz with 256 KB Flash, 32K x 8 RAM, 52 I/O, a 12-bit ADC with 19 channels, two 12-bit DACs, and connectivity including CANbus, I²C, SPI, UART/USART, IrDA, and LINbus, all in a 64-UFBGA package rated for -40 to 105 °C.