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STMicroelectronics STM32F091RCT7
- Part No.:
- STM32F091RCT7
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F091RCT7.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:601
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Product details
Overview
STM32F091RCT7 from STMicroelectronics is a 32-bit ARM® Cortex®-M0 microcontroller with 256 KB Flash, 32 KB SRAM (with hardware parity), and integrated CAN 2.0B interface - deployed in industrial motor control gate drivers requiring real-time PWM, analog sensing, and fieldbus communication.
For engineers reviewing the STM32F091RCT7 datasheet, STM32F091RCT7 pinout, STM32F091RCT7 application, or STM32F091RCT7 equivalent, key selection criteria include 48 MHz max CPU frequency, dual 12-bit DAC channels for analog output generation, 12-bit ADC with 16 input channels and 1.0 µs conversion time, and 88 fast I/Os with up to 69 5V-tolerant pins for mixed-voltage system interfacing.
Technical Context
The device integrates an ARM Cortex-M0 core with tightly coupled peripherals including a 16-bit advanced-control timer (TIM1) supporting 6-channel complementary PWM with dead-time insertion - essential for three-phase inverter control. Its clock system combines internal oscillators (HSI48 with auto-trimming, LSI, LSE) and external crystal support (4–32 MHz HSE, 32 kHz RTC oscillator) enabling precise timing across operating modes.
Power architecture includes independent VDD/VDDA supplies (2.0–3.6 V), programmable voltage detector (PVD), and three low-power states (Sleep/Stop/Standby) with RTC and backup register retention on VBAT - validated for battery-backed metering and sensor node applications requiring sub-µA standby current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 48 MHz max - enables deterministic real-time task scheduling in firmware-controlled motor drives. |
| Flash / SRAM | 256 KB Flash with ECC, 32 KB SRAM with HW parity - supports robust firmware storage and safety-critical data buffers per IEC 61508 SIL-2 requirements. |
| Analog Peripherals | One 12-bit ADC (16 ch, 1.0 µs), two 12-bit DACs, two comparators - enables closed-loop analog feedback and reference generation without external components. |
| Timers | 12 timers including TIM1 (advanced-control, 6-channel PWM), TIM2–TIM7, and SysTick - provides hardware-accelerated motor commutation, IR decoding, and system tick management. |
| Communication | CAN 2.0B, 2× I²C (Fast Mode Plus), 8× USART (3 with ISO7816/LIN/IrDA), 2× SPI/I²S - supports industrial fieldbus, smart-card interfaces, and audio/sensor data streaming. |
| I/O Capability | 88 fast I/Os; 69 pins 5V-tolerant, 19 with independent VDDIO2 supply - allows direct connection to legacy 5V logic and isolated power domains. |
| Package | LQFP64 (10 × 10 mm, 0.5 mm pitch) - compatible with standard PCB assembly processes and thermal management in compact industrial enclosures. |
Pinout & Package
LQFP64 package with exposed thermal pad; 64-pin quad flat pack, 10 × 10 mm body, 0.5 mm lead pitch, RoHS-compliant ECOPACK®2 finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power and ground rails | Separate digital/analog supplies enable noise isolation for precision ADC/DAC operation; VDDA must be ≥2.4 V for full analog performance. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15, PF0–PF1 | General-purpose I/Os | 88 total GPIOs; up to 69 tolerate 5V inputs regardless of VDD level - simplifies level-shifting in mixed-voltage systems. |
| PA11/PA12, PB9/PB10 | CAN_TX/CAN_RX | Dedicated differential CAN transceiver interface compliant with ISO 11898-1; supports bit rates up to 1 Mbit/s in automotive and industrial networks. |
| PA4–PA7, PB0–PB1, PC0–PC5 | ADC_IN0–ADC_IN16 | 16-channel analog input mapping; supports single-ended and differential acquisition with internal temperature sensor and VREFINT calibration. |
| PA4, PA5 | DAC_OUT1/DAC_OUT2 | Two independent 12-bit buffered voltage outputs; each supports noise-free analog waveform generation at up to 1 MHz update rate. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive Sensing Controller (TSC) | 24-channel touch-sensing engine with built-in charge-transfer measurement - enables robust touchkey, slider, and rotary encoder UIs without external ICs. |
| HDMI CEC Interface | Dedicated CEC physical layer with wakeup-on-header detection - supports consumer electronics remote control interoperability in smart home gateways. |
| CRC Calculation Unit | Hardware-accelerated CRC-32 generator with programmable polynomial - offloads checksum computation for firmware OTA updates and secure boot validation. |
| Serial Wire Debug (SWD) | 2-pin debug interface (SWCLK/SWDIO) with SWO trace support - enables non-intrusive real-time debugging and code profiling in resource-constrained embedded targets. |
| 96-bit Unique ID | Factory-programmed silicon serial number - used for device authentication, license binding, and secure firmware provisioning in OEM production. |
Applications
| Industrial Motor Control | Smart Energy Metering |
|---|---|
Use Scenario: Three-phase BLDC motor drive with Hall-effect or encoder feedback and current sensing. IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, generating 6-channel PWM via TIM1, sampling ADC for phase currents, and communicating via CAN bus. Use Value: Integrated advanced timer with dead-time control eliminates external gate driver logic; dual DACs generate precise reference voltages for analog front-end calibration. | Use Scenario: DIN-rail mounted electricity meter with tariff switching, tamper detection, and PLC/GPRS backhaul. IC Role / Device Role / Timing Role: System-on-chip managing metrology ADC, RTC calendar, EEPROM emulation, and ISO7816-compliant secure element interface. Use Value: VBAT-backed RTC with alarm and periodic wakeup enables accurate billing intervals; 32 KB SRAM with parity ensures data integrity during power loss events. |
| Home Automation Gateway | Medical Sensor Hub |
Use Scenario: Zigbee/Z-Wave-to-IP bridge aggregating HVAC, lighting, and security sensors over multiple protocols. IC Role / Device Role / Timing Role: Protocol translation hub using multiple USARTs (LIN/IrDA/ISO7816), I²C for sensor reads, and HDMI CEC for TV control. Use Value: Eight USARTs allow concurrent legacy protocol support; CEC wakeup reduces system power by enabling sleep until remote command arrival. | Use Scenario: Portable patient monitor collecting ECG, SpO₂, and temperature via analog front-end and wireless telemetry. IC Role / Device Role / Timing Role: Analog signal conditioner with 12-bit ADC, DAC for bias generation, comparators for threshold alerts, and USB-capable USART for data export. Use Value: Dual 12-bit DACs provide programmable electrode bias; internal temperature sensor + VREFINT enable self-calibration without external references. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F072RBT6 | 128 KB Flash, no CAN, 1× DAC, 16 I/Os fewer, same LQFP64 package | Suitable for USB-enabled human interface devices but lacks CAN and dual DAC required for motor control | Select only when CAN and analog output redundancy are unnecessary and cost optimization is primary. |
| STM32F303RCT7 | Cortex-M4F core, 256 KB Flash, FPU, 2× 12-bit ADCs, no TSC, higher power consumption | Better for floating-point math (e.g., digital filters), but lacks capacitive sensing and has larger die size | Choose when computational throughput outweighs touch UI needs and thermal budget permits higher active current. |
Compared with STM32F072RBT6, the STM32F091RCT7 adds CAN and dual DACs critical for industrial control; versus STM32F303RCT7, it trades FPU capability for lower cost, smaller footprint, and integrated touch sensing - making it optimal for cost-sensitive, mixed-signal edge nodes.
Availability
STM32F091RCT7 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, home automation gateways, and medical sensor hubs requiring stable component supply across multi-year production cycles.
Supply support for STM32F091RCT7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and analog products for industrial, automotive, and consumer markets.
The STM32F0 series delivers entry-level Cortex-M0 performance with rich analog integration and industrial-grade reliability - engineered specifically for cost-sensitive, real-time embedded applications demanding high peripheral density and low-power operation.
FAQ
What is the maximum operating frequency and voltage range for the STM32F091RCT7?
The STM32F091RCT7 operates at up to 48 MHz CPU frequency with a supply voltage range of 2.0 V to 3.6 V for digital I/Os and 2.4 V to 3.6 V for the analog domain (VDDA). It supports full-speed operation across this range, with internal regulators maintaining stable core voltage under varying load conditions.
Does the STM32F091RCT7 support hardware-based cryptographic functions?
No, the STM32F091RCT7 does not include dedicated cryptographic accelerators (e.g., AES, SHA, PKA). It relies on software libraries for encryption; however, its 96-bit unique ID and write-protected option bytes support basic device authentication and secure boot implementation in conjunction with external secure elements.
Can the STM32F091RCT7's DAC outputs drive external loads directly?
Yes, each DAC channel (PA4/PA5) provides a buffered voltage output capable of sourcing/sinking ±2 mA with rail-to-rail swing (0–VDDA). For loads requiring >2 mA or low-impedance driving, an external op-amp buffer is recommended to maintain linearity and settling time specifications.
How many independent power domains does the STM32F091RCT7 support?
The STM32F091RCT7 supports three independent power domains: VDD/VSS (digital core and I/Os), VDDA/VSSA (analog peripherals), and VBAT (RTC and backup registers). This separation ensures analog accuracy, low-power RTC operation, and immunity to digital switching noise during mixed-signal operation.
STM32F091RCT7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM32F0
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F091RCT7 FAQ
1.How can I place an order for STM32F091RCT7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F091RCT7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32F091RCT7 reliable?
The price and inventory of STM32F091RCT7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F091RCT7 is usually 5 days.
3.What payment methods are accepted for STM32F091RCT7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F091RCT7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F091RCT7?
STM32F091RCT7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F091RCT7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32F091RCT7?
For technical support, including STM32F091RCT7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F091RCT7 requirements.
6.How does Aetrix verify that STM32F091RCT7 is sourced from the original manufacturer or authorized distributors?
All STM32F091RCT7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32F091RCT7 meets industry standards.
7.What is the process for return or replacement of STM32F091RCT7?
All STM32F091RCT7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F091RCT7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32F091RCT7 part is unused and in its original packaging.
Return procedure for STM32F091RCT7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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