STMicroelectronics STM32F303C6T6

Overview

STM32F303C6T6 from STMicroelectronics is an Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 72 MHz, featuring 32 KB Flash, 12 KB SRAM with hardware parity, two 12-bit ADCs (21-channel, 0.20 µs conversion), three 12-bit DACs, and one rail-to-rail operational amplifier - deployed in motor control feedback loops, analog sensor signal conditioning, and industrial HMI touch interfaces.

For engineers reviewing the STM32F303C6T6 datasheet, STM32F303C6T6 pinout, STM32F303C6T6 application, or STM32F303C6T6 equivalent, key selection criteria include integrated op-amp PGA capability, dual ADC simultaneous sampling, CAN 2.0B interface, 5 V-tolerant GPIOs, and LQFP32 package compatibility with space-constrained embedded designs.

Technical Context

The STM32F303C6T6 integrates a Cortex-M4 core with single-cycle multiply and hardware divide, supporting DSP instructions and delivering 90 DMIPS at 72 MHz. Its memory subsystem includes 32 KB Flash (with error correction), 12 KB SRAM with parity, and 4 KB CCM-SRAM for critical code/data execution.

Analog subsystem architecture features two independent 12-bit ADCs with selectable resolution (6/8/10/12-bit), differential input support, and separate 2.0–3.6 V analog supply; three DACs (2.4–3.6 V analog supply); one programmable-gain op-amp with full terminal access; and three ultra-fast comparators - all synchronized via shared interconnect matrix and DMA controller.

Key Specifications

Pinout & Package

LQFP32 (7 × 7 mm, 0.8 mm pitch) package with exposed thermal pad; RoHS-compliant and ECOPACK®2 certified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303K6T6, the C6T6 offers identical functionality and pin compatibility; versus STM32F072CBT6, it delivers 1.5× higher CPU performance, dual high-speed ADCs, integrated analog peripherals, and CAN - making it indispensable for closed-loop analog-intensive systems.

Availability

STM32F303C6T6 is available at Aetrix Electronics and suitable for motor control systems, industrial sensor nodes, HMI touch panels, and PLC I/O modules requiring stable component supply across extended production lifecycles.

Supply support for STM32F303C6T6 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 management ICs, sensors, and analog devices for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, analog-rich embedded applications - emphasizing integrated op-amps, comparators, high-resolution ADCs/DACs, and advanced timers for motor control, digital power, and human-machine interface systems.

FAQ

What is the maximum operating frequency and core type of the STM32F303C6T6?

The STM32F303C6T6 uses an Arm Cortex-M4 core with FPU, rated for up to 72 MHz operation. It achieves 90 DMIPS performance and supports DSP instructions including single-cycle MAC operations. This frequency is sustained under full voltage (2.0–3.6 V) and temperature (–40°C to +85°C) specifications per DS9866 Rev 8.

Does the STM32F303C6T6 support hardware-based cryptographic acceleration?

No, the STM32F303C6T6 does not include dedicated cryptographic accelerators such as AES, SHA, or PKA engines. Security relies on software libraries (e.g., Mbed TLS) executed on the Cortex-M4 core. For hardware crypto, ST recommends the STM32L4 or STM32H7 series with CryptoCell or AES engines.

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

Yes, the single operational amplifier supports PGA mode with selectable gains of 1×, 2×, 4×, 8×, or 16× using internal resistor networks. All terminals (non-inverting input, inverting input, output) are accessible on dedicated pins (PA0–PA7, PB0–PB1), enabling direct sensor connection and external feedback control without additional components.

What is the minimum supply voltage for reliable ADC operation on the STM32F303C6T6?

The ADC requires VDDA ≥ 2.0 V for guaranteed 12-bit linearity and monotonicity, as specified in Section 6.3.18 of DS9866 Rev 8. Below 2.0 V, integral nonlinearity (INL) degrades beyond ±1 LSB, and conversion time increases. The analog supply must be independently filtered and decoupled from VDD to maintain SNR > 68 dB.