STMicroelectronics STM32F334K8T7

Overview

STM32F334K8T7 from STMicroelectronics is an Arm® Cortex®-M4 32-bit MCU with FPU, delivering 72 MHz max CPU frequency, 64 KB Flash, 16 KB SRAM, and integrated high-resolution timing (217 ps HRTIM), three 12-bit DACs, and one rail-to-rail op-amp. It targets digital power control, motor drive, and precision analog signal conditioning in compact industrial converters.

For engineers reviewing the STM32F334K8T7 datasheet, STM32F334K8T7 pinout, STM32F334K8T7 application, or STM32F334K8T7 equivalent, key selection criteria include HRTIM resolution for PWM dead-time control, analog peripheral supply range (2.4–3.6 V), DAC/ADC coexistence capability, and LQFP32 package compatibility with space-constrained PCB layouts.

Technical Context

The device integrates a dual-bus interconnect matrix enabling concurrent access to Flash, SRAM, and peripherals-critical for deterministic real-time control loops. Its HRTIM1 block features six 16-bit counters with 217 ps resolution, five fault inputs, and synchronous event handling, supporting multi-phase interleaved power topologies.

Analog subsystems operate on independent supplies: VDDA (2.0–3.6 V) for ADCs and comparators, and dedicated 2.4–3.6 V analog domain for DACs and the single operational amplifier-enabling simultaneous high-speed conversion and precision amplification without cross-domain noise coupling.

Key Specifications

Pinout & Package

LQFP32 package with 32-pin quad flat profile, 0.8 mm pitch, and exposed thermal pad (ECOPACK®2 compliant). Pinout validated per STMicroelectronics DS9994 Rev 9, Section 4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F334K8T7, the STM32F303K8T6 sacrifices HRTIM and analog integration for lower cost, while the STM32G431KB6 extends resolution and memory within identical packaging-making it a drop-in performance upgrade for next-generation digital power designs.

Availability

STM32F334K8T7 is available at Aetrix Electronics and suitable for digital power supplies, motor drives, industrial PLC analog I/O modules, and precision signal conditioning circuits requiring stable component supply and long-term manufacturability.

Supply support for STM32F334K8T7 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-rich embedded applications-specifically engineered to integrate high-precision timing, mixed-signal peripherals, and real-time control capabilities in compact packages for digital power and motor control.

FAQ

What is the maximum operating temperature range for STM32F334K8T7?

The STM32F334K8T7 is rated for industrial temperature range: –40 °C to +85 °C ambient. This is confirmed in Section 6.3.1 of DS9994 Rev 9, where electrical characteristics-including ADC accuracy, DAC linearity, and HRTIM timing jitter-are specified across this full range under VDD = 2.0–3.6 V conditions.

Does STM32F334K8T7 support hardware CRC calculation?

Yes, it includes a dedicated cyclic redundancy check (CRC) calculation unit compliant with IEEE 802.3, supporting 7-, 8-, 16-, and 32-bit polynomials. The unit operates independently of the CPU and is accessible via memory-mapped registers, enabling fast firmware integrity verification and data packet checksumming without software overhead.

Can the op-amp in STM32F334K8T7 be configured as a programmable-gain amplifier?

Yes-the single rail-to-rail op-amp supports PGA mode with gain settings of 1, 2, 4, 8, 16, or 20× via internal resistor network configuration. All op-amp terminals (non-inverting input, inverting input, output) are externally accessible on designated GPIO pins, allowing flexible feedback network implementation per application requirements.

Is USB functionality available on STM32F334K8T7?

Yes, it integrates a full-speed (12 Mbps) USB 2.0 device interface with dedicated PA11 (DM) and PA12 (DP) pins. The peripheral supports CDC ACM class for virtual COM port use, enabling firmware updates, debug logging, and host-side parameter configuration without requiring external USB transceivers or level shifters.