STMicroelectronics STM32F302K8U6

Overview

STM32F302K8U6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, 64 KB Flash, 16 KB SRAM, integrated USB 2.0 full-speed interface, CAN 2.0B controller, and rail-to-rail analog peripherals including one 12-bit DAC, three comparators, and one programmable-gain operational amplifier. It operates from 2.0–3.6 V and targets mixed-signal industrial control and motor drive applications requiring real-time signal processing and analog integration.

For engineers reviewing the STM32F302K8U6 datasheet, STM32F302K8U6 pinout, STM32F302K8U6 application, or STM32F302K8U6 equivalent, key selection criteria include its 72 MHz CPU with DSP extensions, dual ADC capability (15-channel, 0.20 μs conversion), embedded op-amp with PGA mode, and UFQFPN32 package compatibility for space-constrained designs.

Technical Context

The STM32F302K8U6 implements an Arm Cortex-M4 core with hardware floating-point unit and single-cycle MAC/DSP instructions, enabling deterministic execution of motor control algorithms and digital filter routines. Its interconnect matrix enables concurrent peripheral access without bus contention, supporting simultaneous high-speed ADC sampling, USB data transfer, and CAN message handling.

Analog subsystem integration includes dedicated voltage domains: VDDA (2.0–3.6 V) for ADC/COMP, VREF+ (2.4–3.6 V) for DAC/op-amp, and independent calibration registers for VREFINT and temperature sensor. The device supports up to 18 capacitive sensing channels with hardware-accelerated touchkey detection and linear/rotary position decoding.

Key Specifications

Pinout & Package

STM32F302K8U6 is housed in a 32-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN32) package with exposed thermal pad, rated for industrial temperature range (–40°C to +85°C). Pin assignments follow ST's standardized STM32F302x8 pinout for this package variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303K8U6, the STM32F302K8U6 omits bootloader memory but retains full analog feature parity; versus STM32G431KB6U6, it trades raw compute throughput and ADC speed for proven industrial reliability and simpler migration from legacy F3 designs.

Availability

STM32F302K8U6 is available at Aetrix Electronics and suitable for motor control, industrial sensor nodes, power supply supervision, and human-machine interface applications requiring stable component supply and long-term manufacturability.

Supply support for STM32F302K8U6 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, specializing in microcontrollers, power management, analog, and MEMS technologies for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, analog-intensive embedded applications-designed to integrate precision signal conditioning, real-time control, and communication interfaces into a single chip for motor drives and smart sensors.

FAQ

What is the maximum operating frequency and clock source configuration for STM32F302K8U6?

The STM32F302K8U6 achieves a maximum CPU frequency of 72 MHz using its internal 8 MHz RC oscillator multiplied by the PLL (with HSE or HSI as input). It supports multiple clock sources: 4–32 MHz external crystal (HSE), 32.768 kHz RTC crystal (LSE), internal 8 MHz RC (HSI), and internal 40 kHz RC (LSI). PLL configuration allows flexible trade-offs between power and performance.

Does STM32F302K8U6 support hardware-accelerated cryptographic functions?

No, the STM32F302K8U6 does not include hardware cryptographic accelerators such as AES, SHA, or PKA engines. It relies on software libraries for encryption tasks. For secure boot or data confidentiality, external secure elements or higher-series STM32 devices (e.g., STM32L5 or STM32H7 with CryptoCell) are recommended.

Can the integrated op-amp be used as a unity-gain buffer without external components?

Yes, the integrated op-amp supports unity-gain buffer configuration using internal resistors in PGA mode (gain = 1×). Its non-inverting input (PA5), inverting input (PA6), and output (PA7) are fully accessible, and the device provides internal compensation-no external capacitors or resistors are required for stable unity-gain operation.

What debug interfaces are supported, and is SWD sufficient for full development?

The STM32F302K8U6 supports Serial Wire Debug (SWD) and JTAG via the SWJ-DP interface. SWD is fully sufficient for programming, real-time debugging, breakpoint setting, and memory inspection. It uses only two pins (SWCLK and SWDIO), making it ideal for space-constrained UFQFPN32 layouts where JTAG's five-pin requirement is impractical.