STMicroelectronics STM32F302CBT6

Overview

STM32F302CBT6 from STMicroelectronics is an Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 72 MHz, featuring 128 KB Flash, 40 KB SRAM (16 KB with HW parity), dual 12-bit ADCs (0.20 µs conversion), one 12-bit DAC, four rail-to-rail comparators, two programmable-gain operational amplifiers, and integrated CAN 2.0B interface - deployed in motor control systems requiring real-time analog signal conditioning and closed-loop timing.

For engineers reviewing the STM32F302CBT6 datasheet, STM32F302CBT6 pinout, STM32F302CBT6 application, or STM32F302CBT6 equivalent, key selection criteria include its 64-pin LQFP package, 2.0–3.6 V supply range, 5 V-tolerant I/Os, embedded analog peripherals with independent analog supplies (2.4–3.6 V), and support for capacitive touch sensing across up to 24 channels.

Technical Context

The STM32F302CBT6 integrates a Cortex-M4 core with single-cycle multiply, hardware divide, DSP extensions, and MPU-enabling deterministic execution for motor control and digital power conversion. Its interconnect matrix decouples peripheral bus arbitration from CPU cycles, allowing concurrent ADC sampling, DAC output, and timer-triggered PWM updates without CPU intervention.

Analog subsystem design centers on co-location: two OPAMPs support PGA mode with all terminals accessible; four comparators share common reference options; dual ADCs offer simultaneous sampling with selectable resolution (6/8/10/12 bits) and differential input capability-all powered by dedicated VDDA (2.0–3.6 V) and VREF+ (2.4–3.6 V) rails to maintain precision under mixed-signal load.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch), thermally enhanced 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 microcontroller applications.

Compared with STM32F302CBT6, the STM32F303CBT6 adds USB but increases BOM cost and power consumption, while the STM32G431CBT6 delivers superior analog precision and compute throughput at the expense of software migration effort and higher unit price.

Availability

STM32F302CBT6 is available at Aetrix Electronics and suitable for motor control systems, industrial power supplies, human-machine interfaces, and automated test equipment requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for STM32F302CBT6 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 - specifically engineered for real-time control with integrated high-speed analog peripherals and robust timer subsystems.

FAQ

What is the maximum operating frequency and supported voltage range for STM32F302CBT6?

The STM32F302CBT6 operates at a maximum CPU frequency of 72 MHz and supports a VDD supply range of 2.0 V to 3.6 V. Its VDDA analog supply must be within 2.0–3.6 V, and VREFOPAMP requires 2.4–3.6 V. These ranges are validated per DS9911 Rev 9 Section 6.3.1 and Table 24, ensuring reliable analog performance across industrial temperature grades.

Does STM32F302CBT6 support hardware CRC calculation and memory protection?

Yes, it includes a dedicated CRC calculation unit supporting 7/8/16/32-bit polynomials and a configurable Memory Protection Unit (MPU) with eight regions, each supporting subregion disable and privilege/access permissions. These features are documented in Sections 3.6 and 3.2 of DS9911 Rev 9 and are enabled via standard CMSIS APIs in STM32CubeMX-generated code.

How many analog-to-digital converters does STM32F302CBT6 integrate, and what are their key electrical specs?

It integrates two 12-bit ADCs with 0.20 µs conversion time, selectable resolution (6/8/10/12 bits), and up to 17 input channels per ADC. Each supports single-ended/differential modes, 0–3.6 V input range, and separate analog supply (VDDA = 2.0–3.6 V). Full specs are in Section 6.3.18 of DS9911 Rev 9, including ±1.5 LSB INL and ±0.5 LSB DNL at 12-bit resolution.

Is STM32F302CBT6 pin-compatible with other STM32F3-series MCUs in LQFP64 package?

No - while STM32F302CBT6 shares the LQFP64 footprint with STM32F303CBT6 and STM32F318CBT6, pin functions differ significantly across variants (e.g., alternate functions for PA11/PA12 vary between USB and non-USB parts). Pin definitions are unique per device; refer to Table 13 in DS9911 Rev 9 for exact mapping and verify against target variant's datasheet.