STMicroelectronics STM32F301R6T6

Overview

STM32F301R6T6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, 32 KB Flash, 16 KB SRAM, and integrated analog peripherals including one 12-bit DAC, three rail-to-rail comparators, one programmable-gain operational amplifier, and a 12-bit ADC with 0.20 μs conversion time. It operates from 2.0–3.6 V and targets motor control, sensor signal conditioning, and capacitive touch interfaces in industrial and consumer equipment.

For engineers reviewing the STM32F301R6T6 datasheet, STM32F301R6T6 pinout, STM32F301R6T6 application, or STM32F301R6T6 equivalent, key selection criteria include its 48-pin LQFP package, 72 MHz CPU clock, embedded op-amp with PGA mode, 18-channel capacitive sensing controller, and dual-clock-domain USART with ISO 7816 support.

Technical Context

The STM32F301R6T6 implements an Arm Cortex-M4 core with single-cycle multiply and hardware divide, enabling real-time DSP operations for motor control and sensor fusion. Its analog subsystem integrates an op-amp with externally accessible terminals, three ultra-fast comparators, and a 12-bit ADC with selectable resolution (6/8/10/12 bits) and differential input capability.

Clock management includes dual oscillators (4–32 MHz HSE and 32 kHz LSE), internal 8 MHz RC with PLL, and 40 kHz LSI - supporting precise RTC operation and low-power Stop/Standby modes. The interconnect matrix enables concurrent peripheral access without bus contention, critical for deterministic timing in mixed-signal applications.

Key Specifications

Pinout & Package

LQFP48 (7 × 7 mm, 0.5 mm pitch) package with exposed thermal pad - suitable for compact industrial PCBs requiring moderate I/O count and thermal reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F302R6T6, the STM32F301R6T6 trades Flash capacity for RTC battery backup - critical for time-stamped logging. Versus STM32F072RBT6, it delivers superior analog integration and M4-level compute for real-time control, justifying higher BOM cost in sensor-rich systems.

Availability

STM32F301R6T6 is available at Aetrix Electronics and suitable for motor control, capacitive touch interfaces, sensor signal conditioning, and smart power outlets requiring stable component supply across multi-year production cycles.

Supply support for STM32F301R6T6 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, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, analog-intensive embedded applications - combining Cortex-M4 performance with integrated op-amps, comparators, and capacitive sensing to reduce external component count in motor control and human-machine interface designs.

FAQ

What is the maximum operating frequency of the STM32F301R6T6?

The STM32F301R6T6 achieves a maximum CPU clock frequency of 72 MHz using its internal PLL driven by the 8 MHz HSI oscillator or an external 4–32 MHz crystal. This frequency is sustained across the full industrial temperature range (–40°C to +85°C) and 2.0–3.6 V supply range, with all peripherals fully functional and timing specifications guaranteed per the DS9895 Rev 8 datasheet.

Does the STM32F301R6T6 support hardware-accelerated cryptographic functions?

No, the STM32F301R6T6 does not include dedicated cryptographic accelerators such as AES, SHA, or PKA engines. It relies on software libraries for encryption tasks. For hardware crypto support, ST recommends the STM32L4 or STM32H7 series, which integrate dedicated cryptographic processors and secure memory protection units.

Can the integrated op-amp be used in transimpedance configuration?

Yes, the single rail-to-rail op-amp supports transimpedance amplifier (TIA) configuration: its non-inverting input connects to VREFINT or external bias, inverting input accepts photodiode current, and feedback resistor sets gain. All op-amp terminals (IN+, IN–, OUT) are accessible on dedicated pins, enabling direct connection of external feedback components without internal routing constraints.

What debug interfaces are supported, and is SWD sufficient for full development?

The STM32F301R6T6 supports Serial Wire Debug (SWD) and JTAG via SWDIO/SWCLK/NRST pins. SWD provides full debug capability - including halt/run control, register and memory access, flash programming, and real-time variable monitoring - using only two signal lines. No JTAG-specific features are excluded; SWD is the recommended interface for space-constrained and cost-sensitive designs.