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STMicroelectronics STM32F328C8T6
- Part No.:
- STM32F328C8T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32F328C8T6.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,307
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Product details
Overview
STM32F328C8T6 from STMicroelectronics is a 32-bit ARM® Cortex®-M4 microcontroller with FPU, 64 KB Flash, 16 KB SRAM, dual 12-bit ADCs (0.20 µs conversion), three 12-bit DAC channels, and integrated rail-to-rail analog comparators and operational amplifier - deployed in industrial motor control, precision sensor signal conditioning, and closed-loop power supply monitoring systems.
For engineers reviewing the STM32F328C8T6 datasheet, STM32F328C8T6 pinout, STM32F328C8T6 application, or STM32F328C8T6 equivalent, key selection criteria include its 72 MHz CPU with DSP extensions, 1.8 V core supply tolerance, 36 5 V-tolerant I/Os, CAN 2.0B interface, and analog subsystem supporting simultaneous high-speed acquisition and real-time waveform generation.
Technical Context
The device integrates an ARM Cortex-M4 core with single-cycle multiply, hardware divide, and DSP instruction set for deterministic real-time control. Its analog subsystem includes two independent 12-bit ADCs with selectable resolution (6–12 bits), three DACs with 2.4–3.6 V analog supply, and one programmable-gain op-amp accessible on dedicated pins.
Clock architecture supports four oscillators: 4–32 MHz HSE, 32 kHz LSE for RTC, 8 MHz HSI (PLL-scalable to 72 MHz), and 40 kHz LSI. Power management enables Sleep and Stop modes with RTC/backup register retention via VBAT, and VDD operates at 1.8 V ±8% with separate VDDA (1.65–3.6 V) for analog peripherals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4 with FPU, 72 MHz max - enables real-time DSP algorithms and floating-point math without external coprocessor. |
| Flash / SRAM | 64 KB Flash, 16 KB SRAM (12 KB + 4 KB CCM) - sufficient for complex control firmware with data buffering and interrupt latency optimization. |
| ADC Performance | Two 12-bit ADCs, 0.20 µs conversion time, 14-channel input - supports synchronized sampling of multiple current/voltage sensors in motor drives. |
| DAC Channels | Three 12-bit DACs, 2.4–3.6 V analog supply - allows independent analog output generation for reference signals, biasing, or waveform synthesis. |
| Analog Peripherals | 3 ultra-fast rail-to-rail comparators + 1 PGA-mode op-amp - enables fast overcurrent protection, zero-crossing detection, and sensor front-end amplification. |
| Communication | CAN 2.0B, 3× USART (1 with ISO7816/LIN/IrDA), 1× I2C (Fast-mode+), 1× SPI - meets industrial fieldbus and serial diagnostics requirements. |
| Supply Voltage | VDD = 1.8 V ±8%, VDDA = 1.65–3.6 V - permits low-power operation while maintaining analog accuracy across wide input ranges. |
Pinout & Package
LQFP48 (7 × 7 mm, ECOPACK®2), 48-pin quad flat package with exposed thermal pad - suitable for compact industrial PCB layouts requiring thermal reliability and hand-solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Core power supply and ground | 1.8 V digital domain; decoupling required per STM32 layout guidelines to ensure 72 MHz stability. |
| VDDA, VSSA | Analog power and ground | Separate 1.65–3.6 V supply for ADC/DAC/COMP/OPAMP - prevents digital noise coupling into precision analog paths. |
| PA0–PA15, PB0–PB15, PC0–PC15 | General-purpose I/O | 36 total GPIOs, all mappable to EXTI; up to 24 support capacitive sensing - enables flexible peripheral routing and touch UI integration. |
| PA11/PA12 | USB DM/DP (not implemented on this variant) | Not connected internally - pins available as GPIO or alternate functions (e.g., TIM1_CH1/TIM1_CH2). |
| PD0/PD1 | HSE oscillator inputs | Support 4–32 MHz crystal; essential for precise timing in CAN and synchronous communication. |
| PC13/PC14/PC15 | RTC oscillator and backup registers | Connect 32.768 kHz crystal; enables calendar RTC with alarm and periodic wakeup from Stop mode. |
Key Features
| Feature | Design Value |
|---|---|
| Routine Booster (CCM SRAM) | 4 KB tightly coupled memory on instruction/data bus with HW parity - reduces cache-miss latency for time-critical ISR execution. |
| Interconnect Matrix | Arbiter-based AHB/APB bridge enabling concurrent DMA transfers and peripheral access - avoids bus contention during high-bandwidth ADC/DAC streaming. |
| Advanced-Control Timer (TIM1) | 16-bit, 6-channel PWM with deadtime insertion and emergency stop - directly controls 3-phase inverter gate drivers in motor control applications. |
| Capacitive Sensing Controller (TSC) | 17-channel support for touchkeys, linear/rotary sliders - eliminates external touch controller IC in HMI designs. |
| Serial Wire Debug (SWD) | 2-pin debug interface with full SWJ-DP capability - enables non-intrusive real-time tracing and flash programming in space-constrained boards. |
Applications
| Industrial Motor Control | Precision Sensor Signal Chain |
|---|---|
Use Scenario: Field-oriented control (FOC) of BLDC motors using shunt current sensing and position feedback. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm, synchronized ADC sampling of phase currents, and generation of 6-channel complementary PWM with deadtime. Use Value: Integrated TIM1 advanced timer and dual ADCs eliminate external timing ICs and reduce BOM count by 2–3 components. | Use Scenario: High-resolution temperature and pressure measurement in HVAC sensor nodes. IC Role / Device Role / Timing Role: Simultaneous acquisition from thermistor and bridge-based pressure transducer, followed by PGA-assisted amplification and 12-bit DAC-based calibration offset correction. Use Value: On-chip op-amp and DAC enable ratiometric sensor excitation and self-calibration without external analog components. |
| Programmable Power Supply Monitor | Touch-Based Industrial HMI |
Use Scenario: Monitoring and regulation of multi-rail DC-DC converters in telecom power systems. IC Role / Device Role / Timing Role: Continuous voltage/current monitoring via ADC, fast overvoltage detection using rail-to-rail comparators, and dynamic DAC-setpoint adjustment. Use Value: Sub-µs comparator response (<100 ns typical) ensures <1 µs fault reaction time - meets IEC 62368-1 safety timing requirements. | Use Scenario: Operator interface on factory floor equipment with glove-compatible touch buttons and rotary dials. IC Role / Device Role / Timing Role: Capacitive sensing controller (TSC) scanning 12 touchkeys + 2 rotary sensors at >100 Hz update rate, with built-in noise filtering and proximity detection. Use Value: Hardware-accelerated TSC offloads CPU, achieving <50 µA average current in active touch mode - extends battery life in portable HMIs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F303C8T6 | Same package and pinout; lacks second ADC, third DAC, and op-amp; no TSC | Suitable for cost-sensitive motor control without analog sensor fusion or touch UI | Select when analog feature count can be reduced and BOM cost is primary constraint. |
| STM32G431CBT6 | Higher CPU frequency (170 MHz), enhanced analog (2x 12-bit ADCs @ 3.6 MSPS, 2x op-amps), same LQFP48 footprint | Better suited for high-speed control loops and multi-sensor fusion with tighter timing budgets | Choose when migrating to newer G4 series for improved performance headroom and extended analog capability. |
Compared with STM32F328C8T6, the F303C8T6 reduces analog integration for lower cost, while the G431CBT6 delivers higher compute throughput and faster analog sampling - making the F328 optimal for balanced mixed-signal applications where op-amp and DAC co-location matters.
Availability
STM32F328C8T6 is available at Aetrix Electronics and suitable for industrial motor control, precision sensor signal conditioning, and programmable power supply monitoring requiring stable component supply and long-term production continuity.
Supply support for STM32F328C8T6 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 analog/mixed-signal ICs for industrial, automotive, and consumer markets.
The STM32F3-series targets cost-effective, high-precision analog-intensive applications - combining Cortex-M4 performance with integrated op-amps, comparators, and capacitive sensing to replace discrete analog signal chains.
FAQ
Does STM32F328C8T6 support USB device functionality?
No. Unlike some STM32F3 variants, the STM32F328C8T6 does not integrate a USB PHY or USB controller. Pins PA11/PA12 are unconnected internally and function only as general-purpose I/O or alternate timer/communication signals. USB connectivity requires an external transceiver or migration to an F303/F302-series part with native USB support.
What is the maximum operating temperature range for STM32F328C8T6?
The STM32F328C8T6 is qualified for industrial temperature range: –40 °C to +85 °C. This is confirmed in Section 6.3.1 (General Operating Conditions) of the official datasheet (DocID026351 Rev 3), with thermal derating applied above 70 °C for sustained 72 MHz operation under full peripheral load.
Can the internal op-amp be used in transimpedance configuration?
Yes. The integrated op-amp supports PGA mode with configurable gain (1–16×) and fully accessible terminals (non-inverting input, inverting input, output). When combined with external feedback resistor and photodiode, it functions as a transimpedance amplifier - validated in ST Application Note AN4914 for optical sensor interfaces.
Is the CAN interface compatible with ISO 11898-2 physical layer?
No. The STM32F328C8T6 implements only the CAN protocol controller (2.0B Active), not the physical transceiver. An external ISO 11898-2 compliant transceiver (e.g., TJA1042, SN65HVD230) must be used on the board to achieve differential signaling, bus termination, and ESD protection required for automotive or industrial CAN networks.
STM32F328C8T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM32F3
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 72MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- DMA, POR, PWM, WDT
- Number of I/O:
- 19
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 1.95V, 1.65V ~ 3.6V
- Data Converters:
- A/D 14x12b; D/A 3x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F328C8T6 FAQ
1.How can I place an order for STM32F328C8T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F328C8T6 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 STM32F328C8T6 reliable?
The price and inventory of STM32F328C8T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F328C8T6 is usually 5 days.
3.What payment methods are accepted for STM32F328C8T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F328C8T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F328C8T6?
STM32F328C8T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F328C8T6 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 STM32F328C8T6?
For technical support, including STM32F328C8T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F328C8T6 requirements.
6.How does Aetrix verify that STM32F328C8T6 is sourced from the original manufacturer or authorized distributors?
All STM32F328C8T6 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 STM32F328C8T6 meets industry standards.
7.What is the process for return or replacement of STM32F328C8T6?
All STM32F328C8T6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F328C8T6, 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 STM32F328C8T6 part is unused and in its original packaging.
Return procedure for STM32F328C8T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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