STMicroelectronics STM32F302CBT7

Overview

STM32F302CBT7 from STMicroelectronics is an Arm® Cortex®-M4 32-bit microcontroller with FPU, operating up to 72 MHz, featuring 128 KB Flash, 40 KB SRAM (16 KB with HW parity), two 12-bit ADCs (0.20 µs conversion, 17-channel), one 12-bit DAC, four rail-to-rail comparators, and two programmable-gain operational amplifiers - deployed in industrial motor control, analog signal conditioning, and capacitive touch HMI systems.

For engineers reviewing the STM32F302CBT7 datasheet, STM32F302CBT7 pinout, STM32F302CBT7 application, or STM32F302CBT7 equivalent, key selection considerations include its integrated analog front-end (dual PGA + 4 COMP + DAC), CAN 2.0B interface, USB 2.0 FS support, and LQFP48 package with 37 GPIOs - all critical for real-time mixed-signal embedded designs requiring compact footprint and high peripheral integration.

Technical Context

The STM32F302CBT7 implements a tightly coupled Cortex-M4 core with single-cycle MAC, hardware divide, and DSP extensions, paired with an MPU for memory protection in safety-aware firmware. Its interconnect matrix enables concurrent peripheral access without bus contention, supporting deterministic timing for motor control loops.

Analog subsystem integration includes independent VDDA (2.4–3.6 V) and VREFOPAMP supplies, enabling simultaneous operation of ADCs, DAC, OPAMPs, and comparators with calibrated reference sources (VREFINT, VBAT monitoring, temperature sensor). The TSC supports up to 24 capacitive sensing channels with hardware-accelerated acquisition.

Key Specifications

Pinout & Package

LQFP48 package with 48 leads, 7 × 7 mm body, 0.5 mm pitch, exposed thermal pad (EP), RoHS-compliant, rated for industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F302CBT7, the STM32F303CBT6 offers expanded memory for feature-rich firmware at identical pin compatibility, while the STM32G431CBT6 trades CAN connectivity for superior analog density and CPU performance - making the F302 optimal for cost-sensitive, CAN-reliant industrial edge nodes with balanced mixed-signal needs.

Availability

STM32F302CBT7 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, human-machine interface panels, and power conversion monitoring systems requiring stable component supply and long-term manufacturability.

Supply support for STM32F302CBT7 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-effective, high-precision analog/mixed-signal applications - emphasizing integrated opamps, comparators, and fast ADCs to simplify signal conditioning in motor control, digital power, and HMI systems.

FAQ

What is the maximum operating frequency and supported voltage range for the STM32F302CBT7?

The STM32F302CBT7 operates at up to 72 MHz using its internal PLL, with core and I/O supply (VDD) ranging from 2.0 V to 3.6 V. Analog peripherals require separate VDDA (2.4–3.6 V) and VREFOPAMP (2.4–3.6 V) supplies, and the device guarantees full functionality across the industrial temperature range (–40°C to +85°C) under these conditions.

Does the STM32F302CBT7 support hardware cryptographic acceleration?

No, the STM32F302CBT7 does not include dedicated cryptographic accelerators (e.g., AES, SHA, PKA). It relies on software libraries for encryption tasks. For hardware crypto, ST's STM32L4+, STM32H7, or STM32WB series provide AES-128/256, SHA-256, and public-key accelerators - the F302 prioritizes analog integration and real-time control over security acceleration.

Can the integrated OPAMPs be used as standalone instrumentation amplifiers?

The two OPAMPs support PGA mode (gain 1–100×) with all terminals accessible, but lack dedicated IN+ and IN− pins for true 3-opamp instrumentation amplifier topology. They can be configured as difference amplifiers with external resistors or used in two-opamp IA configurations - however, common-mode rejection ratio (CMRR) is limited to ~80 dB per datasheet (Section 6.3.21), below dedicated instrumentation amps.

Is the STM32F302CBT7 pin-compatible with other STM32F3 packages like LQFP64 or LQFP100?

No - the STM32F302CBT7 uses LQFP48 (48-pin) packaging, while STM32F302CCT7 (LQFP48), STM32F302RBT6 (LQFP64), and STM32F302VCT6 (LQFP100) have distinct pin counts and mappings. Although they share identical peripheral sets and register-level compatibility, physical pinout differs; migration requires PCB redesign and signal reassignment per the respective pin definition tables in DS9911 Rev 9.