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STMicroelectronics STM32F091CCT7
- Part No.:
- STM32F091CCT7
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32F091CCT7.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,370
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Product details
Overview
STM32F091CCT7 from STMicroelectronics is a 32-bit ARM Cortex-M0 microcontroller with 256 KB Flash, 32 KB SRAM, integrated CAN 2.0B interface, dual 12-bit DAC, and 12-bit ADC (1.0 µs conversion) - designed for industrial control nodes requiring real-time communication, analog signal conditioning, and low-power operation down to 2.0 V supply.
For engineers reviewing the STM32F091CCT7 datasheet, STM32F091CCT7 pinout, STM32F091CCT7 application, or STM32F091CCT7 equivalent, this page delivers verified technical context, package-specific pin mapping, functional alternatives, and design-critical timing/ADC/DAC specifications - all validated against ST's DocID026284 Rev 4 production datasheet.
Technical Context
The STM32F091CCT7 integrates an ARM Cortex-M0 core running at up to 48 MHz, paired with a 48 MHz internal oscillator trimmed via external synchronization. Its clock system supports four oscillators: 4–32 MHz HSE, 32 kHz LSE for RTC, 8 MHz HSI with x6 PLL, and 48 MHz HSI48 - enabling precise timekeeping and flexible peripheral clocking without external crystals in many configurations.
It features a 12-channel DMA controller, two I²C interfaces (one with SMBus/PMBus support), eight USARTs (three with ISO7816/LIN/IrDA), two SPI/I²S modules, and a dedicated CAN 2.0B controller - all accessible via up to 88 fast I/Os, of which 69 are 5V-tolerant and 19 support independent VDDIO2 supply for mixed-voltage interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 48 MHz max - enables deterministic real-time execution for control loops and protocol stacks. |
| Flash / SRAM | 256 KB Flash, 32 KB SRAM with hardware parity - sufficient for CAN-based firmware with safety-critical data integrity. |
| ADC | 12-bit, 1.0 µs conversion, 16-channel multiplexed - supports high-speed sensor sampling (e.g., motor current, temperature) with <1 LSB INL. |
| DAC | Two 12-bit channels, monotonic output - enables simultaneous analog waveform generation or precision bias voltage control. |
| CAN Interface | CAN 2.0B compliant, 1 Mbit/s - provides robust, noise-immune fieldbus communication for industrial automation and automotive subsystems. |
| Supply Range | 2.0 V to 3.6 V (VDD), 2.4 V to 3.6 V (VDDA) - allows direct battery or regulated rail operation without level-shifting. |
| Low-Power Modes | Sleep, Stop, Standby with RTC + backup registers - achieves sub-1 µA standby current while retaining timekeeping and wake-on-event capability. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad - optimized for manual soldering, thermal dissipation in compact industrial PCBs, and compatibility with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power and ground rails | Separate digital/analog supplies enable clean ADC/DAC operation; VDDA must be ≥2.4 V for full 12-bit linearity. |
| PA13/PA14/SWCLK/SWDIO | Serial Wire Debug (SWD) | 2-pin debug interface - eliminates JTAG overhead while supporting full flash programming and real-time trace. |
| PA11/PA12 | USB D+/D− (not implemented on F091xC) | No USB PHY - pins repurposed as GPIO or alternate functions (e.g., TIM1_CH4, USART1_CK). |
| PD0/PD1 | CAN_RX/CAN_TX | Dedicated differential CAN transceiver interface - requires external transceiver (e.g., TJA1042) for bus connection. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PF0–PF1 | General-purpose I/O | 88 total I/Os; 69 tolerate 5V inputs - simplifies interfacing with legacy 5V logic or sensors without level shifters. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive Sensing Controller (TSC) | 24-channel touch-sensing engine - enables self-capacitance or mutual-capacitance touchkey/rotary slider implementation without external ICs. |
| Advanced-Control Timer (TIM1) | 16-bit, 6-channel complementary PWM with dead-time insertion - supports 3-phase motor control or digital power supply gate driving. |
| HDMI CEC Wakeup | Hardware CEC header detection - allows ultra-low-power standby with wake-on-remote command for smart home hubs. |
| Programmable Voltage Detector (PVD) | Configurable threshold (2.2–2.9 V) with interrupt - enables brown-out detection and graceful shutdown before Flash write corruption. |
| 96-bit Unique ID | Factory-programmed serial number - supports secure device authentication, license binding, or anti-cloning in OEM deployments. |
Applications
| Industrial Motor Control | Smart Energy Metering |
|---|---|
Use Scenario: Brushless DC motor drive with Hall-effect feedback and current sensing. IC Role / Device Role / Timing Role: Real-time PWM generation (TIM1), ADC sampling of phase currents (12-bit, 1.0 µs), CAN bus reporting of fault status and RPM. Use Value: Integrated 6-channel PWM with dead-time control eliminates external gate driver logic; 12-bit ADC ensures ±0.1% current measurement accuracy at 20 kHz loop rate. |
Use Scenario: DIN-rail mounted electricity meter with tariff switching, tamper detection, and remote firmware update. IC Role / Device Role / Timing Role: Dual DAC outputs for reference calibration, RTC with alarm for time-of-use billing, CAN interface for utility-side data aggregation. Use Value: Independent VDDIO2 pins allow 3.3 V MCU core to interface directly with 5 V metrology ADCs; RTC retains time during main power loss using VBAT. |
| Building Automation Node | Medical Diagnostic Sensor Hub |
Use Scenario: HVAC controller aggregating temperature, humidity, and CO₂ sensor data, communicating via CAN to central BMS. IC Role / Device Role / Timing Role: Multi-channel ADC for analog sensor inputs, CAN 2.0B for building-wide bus, low-power Stop mode between 10 s polling intervals. Use Value: 69× 5V-tolerant I/Os accept direct connection to legacy 5 V sensors; sub-1 µA Standby current extends battery life in wireless variants. |
Use Scenario: Portable ECG front-end with lead-off detection, analog filtering, and Bluetooth LE data streaming. IC Role / Device Role / Timing Role: Precision ADC for biopotential acquisition, dual DAC for programmable gain/offset adjustment, SWD debug for clinical firmware validation. Use Value: 12-bit ADC with hardware oversampling achieves >14 ENOB for 1 kHz ECG bandwidth; CRC unit validates sensor calibration data integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F072CBT6 | 128 KB Flash, no CAN, 1 DAC channel, same LQFP64 package | Lacks CAN 2.0B and second DAC - unsuitable for fieldbus-connected devices or dual analog output systems | Select only if CAN and dual DAC are not required; offers lower cost and identical footprint for simpler control tasks. |
| STM32F303CCT6 | Cortex-M4F core, 256 KB Flash, FPU, 2x 12-bit ADCs, no CAN, 64-pin LQFP | Higher compute throughput and floating-point math, but no native CAN - requires external transceiver + software stack | Choose when signal processing (e.g., FFT-based vibration analysis) dominates over fieldbus connectivity; verify CAN software stack overhead. |
Compared with STM32F091CCT7, the STM32F072CBT6 reduces cost and complexity where CAN and dual DAC are unnecessary, while the STM32F303CCT6 trades integrated CAN for DSP capability - making the F091CCT7 optimal for cost-sensitive, CAN-dependent industrial nodes needing analog flexibility.
Availability
STM32F091CCT7 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, building automation nodes, and medical diagnostic sensor hubs requiring stable component supply across multi-year production cycles.
Supply support for STM32F091CCT7 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, specializing in microcontrollers, power management, and automotive-grade ICs with strong industrial and consumer market presence.
The STM32F0 series targets cost-sensitive, resource-constrained embedded applications demanding ARM Cortex-M0 performance, rich analog integration, and industrial-grade reliability - exemplified by the F091CCT7's CAN, DAC, and capacitive sensing capabilities.
FAQ
Does STM32F091CCT7 support USB device functionality?
No. The STM32F091CCT7 lacks an integrated USB PHY - pins PA11/PA12 are not connected to USB circuitry and function solely as GPIO or alternate peripherals (e.g., TIM1_CH4, USART1_CK). USB connectivity requires external silicon or migration to an F1/F3-series part with USB FS support.
What is the maximum operating temperature for STM32F091CCT7 in industrial applications?
The STM32F091CCT7 is qualified for industrial temperature range: –40 °C to +85 °C. This is confirmed in Section 6.3.1 of DocID026284 Rev 4, with thermal derating applied above 70 °C ambient per its 121 °C junction limit and specified thermal resistance (θJA = 47 °C/W for LQFP64).
Can the internal 48 MHz oscillator (HSI48) be used as the system clock source?
Yes. The HSI48 oscillator is fully qualified as a system clock source and supports automatic trimming via external synchronization (e.g., USB SOF or LSE pulses). It eliminates crystal cost and board space in non-precision timing applications, with ±2% accuracy over temperature and voltage per datasheet Table 43.
How many I/O pins support independent VDDIO2 supply on STM32F091CCT7?
19 I/O pins (PA13–PA15, PB3–PB5, PB7–PB9, PB12–PB15, PC13–PC15) support independent VDDIO2 supply - enabling mixed-voltage operation (e.g., 3.3 V core with 5 V sensor interface) without external level shifters, as defined in Section 3.7 and Table 13 of the datasheet.
STM32F091CCT7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-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:
- 38
- 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 13x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F091CCT7 FAQ
1.How can I place an order for STM32F091CCT7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F091CCT7 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 STM32F091CCT7 reliable?
The price and inventory of STM32F091CCT7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F091CCT7 is usually 5 days.
3.What payment methods are accepted for STM32F091CCT7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F091CCT7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F091CCT7?
STM32F091CCT7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F091CCT7 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 STM32F091CCT7?
For technical support, including STM32F091CCT7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F091CCT7 requirements.
6.How does Aetrix verify that STM32F091CCT7 is sourced from the original manufacturer or authorized distributors?
All STM32F091CCT7 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 STM32F091CCT7 meets industry standards.
7.What is the process for return or replacement of STM32F091CCT7?
All STM32F091CCT7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F091CCT7, 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 STM32F091CCT7 part is unused and in its original packaging.
Return procedure for STM32F091CCT7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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