STMicroelectronics STM32F302C8T6

Overview

STM32F302C8T6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, 64 KB Flash, 16 KB SRAM, integrated USB 2.0 full-speed interface, CAN 2.0B controller, and analog peripherals including 12-bit DAC, rail-to-rail comparators, and programmable-gain operational amplifier. It operates from 2.0–3.6 V and targets motor control, industrial sensing, and USB-connected embedded systems.

For engineers reviewing the STM32F302C8T6 datasheet, STM32F302C8T6 pinout, STM32F302C8T6 application, or STM32F302C8T6 equivalent, key selection criteria include its dual analog-comparator architecture with independent reference inputs, 72 MHz CPU clock with single-cycle multiply/HW divide, 18-capacitive-touch-channel TSC, and LQFP48 package compatibility with legacy STM32F0/F1 footprint constraints.

Technical Context

The device integrates an Arm Cortex-M4 core with floating-point unit and DSP extensions, enabling real-time signal processing for closed-loop motor control and sensor fusion. Its interconnect matrix decouples peripheral bus arbitration from CPU timing, allowing concurrent ADC sampling, DMA transfers, and USB packet handling without CPU intervention.

On-chip analog subsystem includes three ultra-fast comparators (150 ns propagation delay), one PGA-mode op-amp (gain up to 16×, rail-to-rail I/O), and a 12-bit DAC with dedicated 16-bit basic timer-enabling self-contained analog stimulus/response chains for precision actuator control and calibration routines.

Key Specifications

Pinout & Package

LQFP48 (7 × 7 mm, 0.5 mm pitch), RoHS-compliant, with exposed thermal pad. Pin count and layout optimized for compact motor driver PCBs and USB-peripheral designs requiring minimal external components.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32F302C8T6, the F303 variant improves analog measurement fidelity for precision motor current sensing, while the G431 offers hardware acceleration for computationally intensive control laws-neither is pin-compatible without PCB revision due to differing peripheral register maps and reset behavior.

Availability

STM32F302C8T6 is available at Aetrix Electronics and suitable for motor control systems, industrial sensor nodes, USB human interface devices, and automotive diagnostic tools requiring stable component supply across extended production lifecycles.

Supply support for STM32F302C8T6 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-sensitive, analog-rich embedded applications-designed to consolidate signal conditioning, motor control, and connectivity functions into a single chip for space-constrained, high-performance systems.

FAQ

What is the maximum operating frequency of the STM32F302C8T6's CPU core?

The STM32F302C8T6 features an Arm Cortex-M4 core with FPU, rated for a maximum system clock frequency of 72 MHz. This is achieved using the internal PLL with HSE (4–32 MHz) or HSI (8 MHz) as source. All peripherals-including ADC, timers, and USB-are fully functional at this clock speed, and the core supports single-cycle multiplication and hardware division for deterministic real-time execution.

Does the STM32F302C8T6 support USB device functionality without external components?

Yes-the STM32F302C8T6 integrates a full-speed USB 2.0 transceiver with internal pull-up resistors and voltage regulators, enabling USB device operation (e.g., CDC, HID, MSC classes) using only the MCU, crystal (8 MHz), and standard USB connector. No external PHY, level shifter, or USB controller IC is required, reducing BOM cost and PCB complexity.

How many analog comparators does the STM32F302C8T6 include, and what are their key electrical specs?

The STM32F302C8T6 integrates three ultra-fast rail-to-rail analog comparators, each with programmable hysteresis and independent reference inputs. Typical propagation delay is 150 ns, input offset voltage is ±2 mV, and common-mode input range spans 0 to VDDA (2.0–3.6 V). They support window mode and wake-from-Stop functionality, making them suitable for overvoltage/undervoltage detection and zero-crossing sensing.

Can the operational amplifier in the STM32F302C8T6 be configured as a programmable-gain amplifier (PGA)?

Yes-the single integrated op-amp supports PGA mode with gains of 1, 2, 3, 4, 8, or 16×, selectable via dedicated OPAMPx_CSR register bits. All terminals (non-inverting input, inverting input, output) are accessible on GPIO pins, and the amplifier operates rail-to-rail with 2.4–3.6 V analog supply. It is commonly used for amplifying low-level sensor outputs (e.g., thermocouple, strain gauge) prior to ADC conversion.