STMicroelectronics STM32F303RDT7

Overview

STM32F303RDT7 from STMicroelectronics is an ARM® Cortex®-M4 32-bit microcontroller with FPU, 72 MHz max clock, 512 KB Flash, 80 KB SRAM (64 KB + 16 KB CCM), and integrated analog peripherals including four op-amps, seven comparators, two 12-bit DACs, and four ADCs (up to 40 channels, 0.20 µs conversion). It operates from 2.0–3.6 V and targets motor control, digital power conversion, and sensor fusion systems requiring real-time signal processing and mixed-signal integration.

For engineers reviewing the STM32F303RDT7 datasheet, STM32F303RDT7 pinout, STM32F303RDT7 application, or STM32F303RDT7 equivalent, key selection criteria include its 64-pin LQFP package, dual DAC + quad op-amp analog subsystem, CAN 2.0B interface, FSMC for external memory expansion, and hardware-accelerated capacitive touch sensing supporting up to 24 channels.

Technical Context

The STM32F303RDT7 implements a tightly coupled Cortex-M4 core with single-cycle multiply, hardware divide, DSP instructions, and MPU-enabling deterministic real-time execution in motor control loops. Its analog subsystem features independent voltage domains: VDDA (2.0–3.6 V) for ADCs/comparators, and separate 2.4–3.6 V supply for DACs and op-amps, ensuring precision signal conditioning without digital noise coupling.

It integrates three advanced-control timers (TIM1/TIM8/TIM20) with deadtime generation and emergency stop-critical for 3-phase inverter gate driving-and supports full-speed USB 2.0 with Link Power Management, CAN 2.0B, and five USARTs with LIN/IRDA/ISO7816 modes for industrial connectivity and diagnostics.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, industrial temperature grade (-40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303K8T6, the STM32F303RDT7 adds CAN, FSMC, and expanded analog resources-justifying its use in networked, memory-extensible systems; versus STM32F407VGT6, it trades peak CPU speed for on-die analog integration and lower active power, optimizing for embedded real-time control over general-purpose computation.

Availability

STM32F303RDT7 is available at Aetrix Electronics and suitable for motor control systems, digital power converters, industrial sensor hubs, and human-machine interfaces requiring stable component supply and long-term industrial lifecycle support.

Supply support for STM32F303RDT7 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 management ICs, sensors, and automotive semiconductors since 1987.

The STM32F3 series targets cost-sensitive, analog-rich embedded applications-specifically engineered to unify high-precision signal acquisition, real-time control, and industrial connectivity in a single chip for motor drives, digital power, and HMI systems.

FAQ

What is the maximum operating frequency and core architecture of the STM32F303RDT7?

The STM32F303RDT7 features an ARM Cortex-M4 core with integrated FPU, running at up to 72 MHz. It delivers 90 DMIPS performance with single-cycle multiply, hardware divide, and DSP instruction set support-optimized for real-time control algorithms such as field-oriented motor control and digital power regulation.

Does the STM32F303RDT7 support hardware-based capacitive touch sensing?

Yes-it integrates a dedicated Touch Sensing Controller (TSC) supporting up to 24 capacitive sensing channels. This enables robust implementation of touchkeys, linear sliders, and rotary wheels without external components, with built-in charge transfer, spread spectrum, and noise filtering compliant with IEC 61000-4-2 Level 4 ESD immunity.

What analog peripherals are integrated into the STM32F303RDT7?

The device integrates four rail-to-rail operational amplifiers (configurable as PGAs), seven ultra-fast comparators, two 12-bit DAC channels, and four fast ADCs (up to 40 channels, 0.20 µs conversion time, 12/10/8/6-bit resolution). Analog supplies are segregated: VDDA (2.0–3.6 V) for ADCs/comparators, and 2.4–3.6 V for DACs/op-amps.

Is the STM32F303RDT7 pin-compatible with other STM32F303 variants?

No-pin compatibility is limited to same-package variants within the R-series (e.g., STM32F303RCT6 in LQFP64). The RDT7 uses LQFP64, but differs from V/Z variants (LQFP100/UFBGA100/LQFP144) in pin count and peripheral mapping; migration requires PCB redesign and firmware adaptation due to differing GPIO and alternate function allocations.