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STMicroelectronics STM32F091CCT6J
- Part No.:
- STM32F091CCT6J
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32F091CCT6J.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,613
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Product details
Overview
STM32F091CCT6J 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) operating at 2.0–3.6 V supply. It delivers real-time control in industrial HMI panels, smart sensor nodes, and CAN-based automotive body electronics.
For engineers reviewing the STM32F091CCT6J datasheet, STM32F091CCT6J pinout, STM32F091CCT6J application, or STM32F091CCT6J equivalent, key selection criteria include CAN timing compliance, 5V-tolerant I/O count (69 pins), RTC+backup register retention under VBAT, and SWD debug support for firmware validation in safety-critical embedded systems.
Technical Context
This MCU integrates an ARM Cortex-M0 core running up to 48 MHz, supported by internal 48 MHz oscillator with automatic trimming and external 4–32 MHz crystal option. Its clock system includes dedicated 32 kHz RTC oscillator with calibration and programmable PLL for precise peripheral synchronization.
The device implements a full-featured peripheral set: two I²C interfaces (one Fast Mode Plus, 1 Mbit/s), eight USARTs (three with ISO7816/LIN/IrDA), two SPI/I²S modules (18 Mbit/s), and one CAN 2.0B controller compliant with ISO 11898-1. All peripherals are memory-mapped and accessible via APB/AHB buses with DMA channel arbitration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M0, 48 MHz max - enables deterministic real-time task scheduling in resource-constrained edge nodes. |
| Flash / SRAM | 256 KB Flash, 32 KB SRAM with HW parity - supports secure firmware updates and robust data logging without external memory. |
| ADC | 12-bit, 1.0 µs conversion, 16-channel - captures fast analog transients (e.g., motor current sensing) with <±1 LSB INL. |
| DAC | Two 12-bit channels - generates precise analog waveforms for sensor calibration or actuator biasing without external DAC ICs. |
| CAN Interface | CAN 2.0B compliant, 1 Mbps - meets automotive body control and industrial fieldbus timing requirements with built-in message filtering. |
| I/O Voltage Tolerance | 69 pins 5V-tolerant - simplifies level-shifting in mixed-voltage systems interfacing with legacy 5V sensors or logic. |
| Low-Power Modes | Sleep/Stop/Standby with RTC + backup registers - achieves <1 µA Standby current while retaining timekeeping and critical state across power cycles. |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch), RoHS-compliant ECOPACK®2, rated for industrial temperature range (–40 °C to +85 °C).
| 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. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15, PF0–PF1 | General-purpose I/O | 88 total I/Os; 69 support 5V tolerance and independent VDDIO2 supply for flexible voltage domain interfacing. |
| PA11/PA12 | USB DM/DP (not present on this variant) | Not connected - STM32F091CCT6J lacks USB PHY; pins available as GPIO or alternate functions (e.g., TIM1_CH4, USART1_CK). |
| PA13/PA14 | SWDIO/SWCLK | Dedicated 2-pin Serial Wire Debug interface - enables non-intrusive firmware debugging and programming without JTAG overhead. |
| PA15 | JTDI / TIM2_CH1 | Configurable as debug input or timer channel - supports traceless debug or high-resolution PWM generation. |
| PB8/PB9 | CAN_RX/CAN_TX | Dedicated CAN physical layer interface - connects directly to external CAN transceiver (e.g., TJA1042) for robust differential bus communication. |
| PC13/PC14/PC15 | RTC_OUT/OSC32_IN/OSC32_OUT | Supports 32.768 kHz crystal for calendar RTC with ±1 ppm accuracy over temperature and voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive Sensing Controller (TSC) | 24-channel touchkey/rotary support - eliminates external touch ICs in HMI designs; immune to moisture and ESD per IEC 61000-4-2 Level 4. |
| Advanced-Control Timer (TIM1) | 6-channel complementary PWM with dead-time insertion - drives 3-phase BLDC motors or half-bridge inverters without external gate drivers. |
| HDMI CEC Wakeup | Hardware CEC frame detection on PA0 - enables ultra-low-power standby wake on consumer IR command, reducing system power to <0.5 µA. |
| Programmable Voltage Detector (PVD) | Configurable threshold (2.2–2.9 V) with interrupt - triggers graceful shutdown before brownout in battery-powered applications. |
| 96-bit Unique ID | Factory-programmed serial number - enables secure device authentication and license binding in OEM firmware deployments. |
Applications
| Industrial HMI Panel | Automotive Body Control Module |
|---|---|
Use Scenario: Touch-enabled dashboard display with real-time sensor monitoring and CAN bus diagnostics. IC Role / Device Role / Timing Role: Main application processor handling GUI rendering, capacitive touch decoding, and CAN message routing with sub-100 µs latency. Use Value: Integrated TSC and CAN eliminate two external ICs; 69 5V-tolerant I/Os interface directly with legacy panel controls and LIN slave nodes. | Use Scenario: Central gateway managing door locks, lighting, and window lift via CAN and LIN networks. IC Role / Device Role / Timing Role: CAN 2.0B master node synchronizing with vehicle clock; UARTs handle LIN transceiver bridging with auto-baud rate detection. Use Value: Dual 12-bit DAC calibrates sensor offsets; RTC with VBAT backup maintains time during ignition-off periods for event logging. |
| Smart Energy Meter | Medical Sensor Node |
Use Scenario: DIN-rail mounted meter measuring voltage/current harmonics and communicating via CAN to building management system. IC Role / Device Role / Timing Role: High-precision ADC sampling at 1 MSPS with hardware oversampling; CAN TX handles time-stamped energy reports. Use Value: 12-bit ADC with internal reference (±1.5% drift) ensures Class 0.5 metering accuracy; Stop mode consumes 1.8 µA for periodic wake-up sampling. | Use Scenario: Portable patient monitor acquiring ECG, temperature, and SpO₂ signals with local alarm triggering. IC Role / Device Role / Timing Role: Analog front-end controller digitizing biopotentials via ADC, generating reference voltages via DAC, and waking on comparator thresholds. Use Value: Two independent 12-bit DACs generate precise bias voltages for instrumentation amplifiers; 32 KB SRAM stores 30 seconds of waveform data pre-transmission. |
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, 1x DAC, 64-pin LQFP | Lacks CAN 2.0B and second DAC; suitable for USB-connected sensor hubs without fieldbus requirements. | Select when CAN and dual DAC are unnecessary and USB device functionality is required. |
| STM32F303CCT6 | Cortex-M4F core, FPU, 256 KB Flash, 48 KB SRAM, no CAN, 2x DAC, 12-bit ADC @ 5 MSPS | Higher compute throughput and ADC speed, but no native CAN; requires external transceiver for CAN connectivity. | Choose for math-intensive signal processing where CAN is implemented externally or replaced by UART-to-CAN bridge. |
Compared with STM32F072CBT6, STM32F091CCT6J adds CAN and dual DAC at identical package size; versus STM32F303CCT6, it trades FPU and ADC speed for integrated CAN and lower dynamic power-making it optimal for cost-sensitive, CAN-centric industrial nodes.
Availability
STM32F091CCT6J is available at Aetrix Electronics and suitable for industrial HMI panels, automotive body control modules, and smart energy meters requiring stable component supply across extended product lifecycles.
Supply support for STM32F091CCT6J 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, designing and manufacturing microcontrollers, power ICs, sensors, and analog devices for industrial, automotive, and consumer markets.
The STM32F0 series targets cost-sensitive, low-power embedded applications requiring ARM Cortex-M0 performance with rich analog and communication peripherals-optimized for rapid development using STM32CubeMX and HAL libraries.
FAQ
Does STM32F091CCT6J support USB device functionality?
No. STM32F091CCT6J does not integrate a USB PHY or USB controller. Pins PA11/PA12 are not connected to USB circuitry and function only as general-purpose I/O or alternate functions (e.g., TIM1_CH4, USART1_CK). For USB-capable variants, consider STM32F072CBT6 or STM32F042K6T6.
What is the maximum operating frequency of the internal HSI48 oscillator?
The internal HSI48 oscillator operates at a nominal 48 MHz with automatic trimming against an external clock source or USB SOF signal. Its frequency stability is ±2% over temperature and voltage, meeting USB full-speed timing requirements when used as system clock source.
Can the 12-bit DAC outputs drive a 1 kΩ load directly?
No. The DAC output buffer is specified for loads ≥5 kΩ. Driving a 1 kΩ load causes gain error exceeding ±10% and settling time degradation. A rail-to-rail op-amp buffer (e.g., TSZ121) is required for low-impedance loads to maintain 12-bit linearity and 10 µs settling.
How many I/O pins support independent VDDIO2 supply?
Nineteen I/O pins (PA[0–7], PB[0–1], PC[0–1], PD[0–1], PE[0–1], PF[0–1]) support independent VDDIO2 supply. This allows interfacing with 1.8 V or 2.5 V peripherals while main VDD operates at 3.3 V, eliminating level shifters in mixed-voltage subsystems.
STM32F091CCT6J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM32F0
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F091CCT6J FAQ
1.How can I place an order for STM32F091CCT6J through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F091CCT6J 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 STM32F091CCT6J reliable?
The price and inventory of STM32F091CCT6J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F091CCT6J is usually 5 days.
3.What payment methods are accepted for STM32F091CCT6J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F091CCT6J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F091CCT6J?
STM32F091CCT6J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F091CCT6J 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 STM32F091CCT6J?
For technical support, including STM32F091CCT6J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F091CCT6J requirements.
6.How does Aetrix verify that STM32F091CCT6J is sourced from the original manufacturer or authorized distributors?
All STM32F091CCT6J 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 STM32F091CCT6J meets industry standards.
7.What is the process for return or replacement of STM32F091CCT6J?
All STM32F091CCT6J units undergo pre-shipment inspection (PSI). If there is an issue with STM32F091CCT6J, 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 STM32F091CCT6J part is unused and in its original packaging.
Return procedure for STM32F091CCT6J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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