STMicroelectronics STM32F301C8T7

Overview

STM32F301C8T7 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, 64 KB Flash, 16 KB SRAM, and integrated analog peripherals including 12-bit DAC, 12-bit ADC (0.20 μs conversion), three rail-to-rail comparators, and one operational amplifier-designed for real-time motor control and sensor signal conditioning in industrial I/O modules.

For engineers reviewing the STM32F301C8T7 datasheet, STM32F301C8T7 pinout, STM32F301C8T7 application, or STM32F301C8T7 equivalent, key selection criteria include its 72 MHz CPU clock, 48-pin LQFP package with 39 GPIOs (5 V-tolerant), embedded op-amp usable in PGA mode, and dual-clock-domain USART supporting ISO 7816.

Technical Context

The device implements a tightly coupled Cortex-M4 core with single-cycle multiply and hardware divide, enabling deterministic execution of DSP-intensive control loops. Its analog subsystem integrates independent voltage domains: VDDA (2.0–3.6 V) for ADC/COMP and VREF+ (2.4–3.6 V) for DAC/op-amp, ensuring noise isolation between digital and precision analog paths.

Peripherals are interconnected via an AHB/APB matrix supporting concurrent DMA transfers to timers, ADCs, and communication interfaces. The advanced-control timer (TIM1) delivers 6-channel PWM with programmable deadtime and emergency stop-critical for three-phase inverter gate driving without external logic.

Key Specifications

Pinout & Package

LQFP48 (7 × 7 mm, 0.5 mm pitch) package with exposed thermal pad; 48 pins, of which 39 are general-purpose I/Os (5 V-tolerant on most), 3 dedicated analog inputs (VREF+, VREF−, VBAT), and 6 power/ground pins (VDD, VSS, VDDA, VSSA, VREF+, VREF−).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303C8T6, the STM32F301C8T7 reduces BOM cost by omitting USB PHY while retaining full analog capability; versus STM32G431CBT6, it trades raw performance for proven reliability in cost-sensitive industrial I/O where 72 MHz suffices.

Availability

STM32F301C8T7 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, medical diagnostic equipment, and PLC I/O modules requiring stable component supply across multi-year production cycles.

Supply support for STM32F301C8T7 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, sensors, and automotive ICs with vertical manufacturing and broad industrial IP portfolio.

The STM32F3 series targets cost-sensitive, analog-rich embedded applications-designed specifically for systems demanding high-precision signal acquisition, real-time control, and compact integration of op-amps, comparators, and capacitive sensing.

FAQ

What is the maximum operating frequency and supported voltage range for STM32F301C8T7?

The STM32F301C8T7 operates at up to 72 MHz using its internal PLL, with VDD and VDDA supply ranges specified from 2.0 V to 3.6 V. It includes a programmable voltage detector (PVD) with eight selectable thresholds (2.2–2.9 V) to monitor supply integrity and trigger interrupts or resets during brown-out conditions.

Does STM32F301C8T7 support hardware-accelerated cryptographic functions?

No, the STM32F301C8T7 does not include hardware cryptographic accelerators such as AES, DES, or SHA engines. It relies on software libraries for encryption tasks. For secure boot or data-at-rest protection, designers must implement lightweight algorithms like AES-128 in firmware or add external secure elements.

Can the integrated op-amp be used as a programmable gain amplifier (PGA)?

Yes-the single rail-to-rail op-amp supports PGA configuration using external resistors on its non-inverting and inverting inputs and output. Gain is set by resistor ratios (1× to 40×), and the output can be routed directly to ADC inputs for digitization, enabling calibrated analog front-end scaling without external components.

What debug interfaces are supported and what are the pin requirements?

The STM32F301C8T7 supports Serial Wire Debug (SWD) and JTAG via dedicated SWDIO/SWCLK or TMS/TCK/TDO/TDI pins. SWD requires only two pins (plus reset and power) and is recommended for space-constrained layouts; JTAG uses five pins and enables full boundary-scan testing. Both interfaces operate at system clock speeds up to 72 MHz.