STMicroelectronics STM32F303CCT7

Overview

STM32F303CCT7 from STMicroelectronics is an Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 72 MHz, featuring 256 KB Flash, 48 KB SRAM (including 8 KB CCM), four 12-bit ADCs (39-channel, 0.2 µs conversion), two 12-bit DACs, seven rail-to-rail comparators, and four programmable-gain operational amplifiers - deployed in industrial motor control, analog signal conditioning, and capacitive touch HMI systems.

For engineers reviewing the STM32F303CCT7 datasheet, STM32F303CCT7 pinout, STM32F303CCT7 application, or STM32F303CCT7 equivalent, key selection criteria include integrated analog front-end capability (PGA + COMP + DAC), CAN 2.0B interface support, 5 V-tolerant I/Os, and dual 16-bit advanced timers with deadtime generation for three-phase inverter control.

Technical Context

The STM32F303CCT7 integrates a Cortex-M4 core with hardware FPU and MPU, enabling deterministic real-time control with DSP instructions. Its analog subsystem includes independent voltage domains (VDDA 2.4–3.6 V for DAC/OPAMP, 2.0–3.6 V for ADC/COMP) and configurable gain stages across four OPAMPs usable as PGAs.

Clock architecture supports multiple sources: 4–32 MHz HSE crystal, 32 kHz LSE for RTC, 8 MHz HSI with PLL (up to 72 MHz), and 40 kHz LSI. Peripheral interconnect matrix enables flexible routing of 87 GPIOs-including 24 capacitive sensing channels-to timers, ADCs, and communication interfaces including USB FS, CAN, and five USARTs.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; 64-pin quad flat lead frame optimized for thermal dissipation and PCB routing density in compact industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303K8T6, the STM32F303CCT7 delivers 4× more Flash, full analog front-end integration, and advanced timer features essential for motor control; versus STM32F411CEU6, it trades raw CPU speed for on-chip analog flexibility and lower system-level component count.

Availability

STM32F303CCT7 is available at Aetrix Electronics and suitable for industrial motor drives, smart sensor nodes, human-machine interfaces, and power supply monitoring systems requiring stable component supply and long-term production continuity.

Supply support for STM32F303CCT7 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, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, analog-rich embedded applications - combining high-precision analog peripherals with real-time Cortex-M4 performance for motor control, digital power, and HMI.

FAQ

What is the maximum operating frequency and how is it achieved?

The STM32F303CCT7 achieves 72 MHz maximum CPU frequency using its internal 8 MHz HSI oscillator multiplied by a programmable PLL. External 4–32 MHz crystals can also feed the PLL for improved timing stability. The 72 MHz clock is distributed via the interconnect matrix to all peripherals, with individual prescalers allowing independent peripheral clock tuning.

Does this MCU support hardware CRC calculation and why does it matter?

Yes, the STM32F303CCT7 includes a dedicated CRC calculation unit compliant with CRC-32 (IEEE 802.3). This accelerates firmware integrity checks, OTA update validation, and communication packet checksumming without CPU overhead - reducing latency in safety-critical bootloaders and improving reliability in noisy industrial networks.

How many analog-to-digital converters does it have and what are their key capabilities?

The STM32F303CCT7 integrates four independent 12-bit ADCs with up to 39 input channels, 0.2 µs conversion time, and selectable resolution (6/8/10/12 bits). Each ADC supports single-ended and differential modes, hardware oversampling, and flexible trigger sources - enabling simultaneous high-speed acquisition of motor phase currents, DC bus voltage, and temperature sensors.

Is the STM32F303CCT7 pin-compatible with other STM32F3 devices?

No - the STM32F303CCT7 uses LQFP64 packaging and is not pin-compatible with LQFP48 or LQFP100 variants in the same family. Pin mapping differs significantly across packages due to varying peripheral routing constraints and I/O count. Migration requires PCB redesign and careful validation of alternate function assignments per port.