STMicroelectronics STM32F091RCY6TR

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Product attributes Property Value
Manufacturer STMicroelectronics
Product Series STM32F0
Packaging Cut Tape (CT) | Tape & Reel (TR)
Core Processor ARM® Cortex®-M0
Core Size 32-Bit Single-Core
Speed 48MHz
Connectivity CANbus, I2C, IrDA, LINbus, SPI, UART/USART
Peripherals DMA, I2S, POR, PWM, WDT
Number of I/O 52
Program Memory Size 256KB (256K x 8)
Program Memory Type FLASH
EEPROM Size -
RAM Size 32K x 8
Voltage - Supply (Vcc/Vdd) 2V ~ 3.6V
Data Converters A/D 19x12b; D/A 2x12b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 64-WLCSP (3.35x3.59)
Package / Case 64-UFBGA, WLCSP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The STM32F091RCY6TR is an ARM Cortex-M0 microcontroller from STMicroelectronics, operating at 48MHz. It offers 256KB flash and 32KB SRAM in a compact 64-UFBGA package. The device includes DMA, I2S, PWM, and watchdog timers, making it a cost-effective solution for audio, IoT, and industrial control applications. Its 2V to 3.6V supply range supports a wide variety of power sources.

  • Cost-effective Cortex-M0: Balances performance and power for budget-sensitive designs.
  • Large 256KB flash: Supports complex firmware and OTA updates.
  • I2S audio interface: Enables direct connection to audio codecs.
  • Compact WLCSP: Reduces PCB area for portable products.

Audio Accessories

The I2S interface and 48MHz Cortex-M0 core enable high-quality audio processing in USB headsets and voice-controlled devices.

Smart Home Controllers

With 256KB flash, it can handle complex home automation protocols like Zigbee or proprietary RF stacks.

Battery-Powered Sensors

The low-power modes and 2V minimum supply make it suitable for wireless environmental sensors.

Industrial Timers

Its PWM and DMA capabilities support precise timing in conveyor control and lighting systems.

Consumer Appliances

The WLCSP package allows integration into compact washing machine or dishwasher control boards.

LED Lighting

Multiple PWM channels enable color mixing and dimming in smart LED drivers.

Q: What core architecture is used?
A: It is based on the ARM Cortex-M0 core.
Q: What is the maximum operating frequency?
A: The CPU runs at up to 48MHz.
Q: How much flash memory does it have?
A: It provides 256KB of flash memory.
Q: What package is available?
A: It comes in a 64-UFBGA (WLCSP) package.
Q: Does it support I2S audio?
A: Yes, it includes I2S interfaces for audio applications.
Base Product Number : STM32F091RCY6
256KB flash 48MHz ARM Cortex-M0 audio I2S industrial IoT STM32F091RCY6TR WLCSP
Q: What core architecture is used?
A: It is based on the ARM Cortex-M0 core.
Q: What is the maximum operating frequency?
A: The CPU runs at up to 48MHz.
Q: How much flash memory does it have?
A: It provides 256KB of flash memory.
Q: What package is available?
A: It comes in a 64-UFBGA (WLCSP) package.
Q: Does it support I2S audio?
A: Yes, it includes I2S interfaces for audio applications.