STMicroelectronics STM32F334K8T6

Overview

STM32F334K8T6 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 - deployed in digital power supplies for synchronous rectification control and PWM generation.

For engineers reviewing the STM32F334K8T6 datasheet, STM32F334K8T6 pinout, STM32F334K8T6 application, or STM32F334K8T6 equivalent, key selection criteria include HRTIM resolution, analog peripheral supply ranges (VDDA 2.0–3.6 V), DAC/ADC coexistence capability, and LQFP32 package compatibility with space-constrained power converter PCB layouts.

Technical Context

The device integrates a dual-ADC architecture supporting simultaneous sampling across up to 21 channels at 0.20 µs conversion time, with selectable 6/8/10/12-bit resolution and independent analog supply (2.0–3.6 V). Its HRTIM1 subsystem provides six 16-bit counters with 217 ps timing resolution, 10 PWM outputs, five fault inputs, and synchronized event handling - enabling precise dead-time control and phase-shifted topologies in isolated DC-DC converters.

On-chip analog resources include three ultra-fast comparators (propagation delay < 50 ns), one programmable-gain op-amp (PGA mode, gain 1–16), and a temperature sensor - all sharing a common analog domain (VDDA 2.4–3.6 V) and directly interfacing with HRTIM triggers for real-time loop closure without CPU intervention.

Key Specifications

Pinout & Package

LQFP32 package with 32-pin quad flat profile, 0.8 mm pitch, exposed thermal pad (EP), RoHS-compliant and ECOPACK®2 certified.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-resolution timing and analog integration applications.

Compared with STM32F334K8T6, the STM32F303K8T6 offers reduced analog integration and timing precision at lower cost, while the STM32G431KB6 delivers superior performance and scalability - making the F334 optimal for cost-sensitive, mature digital power platforms requiring proven HRTIM reliability.

Availability

STM32F334K8T6 is available at Aetrix Electronics and suitable for digital power supplies, motor drives, capacitive touch interfaces, and programmable power sequencers requiring stable component supply and long-term industrial availability.

Supply support for STM32F334K8T6 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, specializing in microcontrollers, power management, sensors, and automotive ICs.

The STM32F3 series targets cost-sensitive, analog-rich embedded applications - designed specifically for digital power conversion, motor control, and human-machine interface systems requiring high-precision timing and integrated signal conditioning.

FAQ

What is the maximum operating temperature range for STM32F334K8T6?

The STM32F334K8T6 is rated for industrial temperature range: –40 °C to +85 °C ambient. This is validated per ST's qualification standards (AEC-Q100 not applicable; qualified to JEDEC JESD47). Thermal derating begins above 70 °C ambient when operating at full 72 MHz with all peripherals active and VDD = 3.6 V.

Does STM32F334K8T6 support hardware CRC calculation?

Yes, it includes a dedicated CRC calculation unit compliant with IEEE-802.3 (32-bit polynomial 0x04C11DB7). The peripheral operates independently of the CPU, accepts data via DMA, and supports byte/word/half-word writes. It is commonly used for Flash integrity checks and firmware signature verification in secure boot implementations.

Can the op-amp in STM32F334K8T6 be used in transimpedance configuration?

Yes - the single rail-to-rail op-amp supports transimpedance amplifier (TIA) configurations. Its inverting input, non-inverting input, and output pins are fully accessible on GPIOs (PA0–PA7), and it operates with VDDA = 2.4–3.6 V. Gain is set externally via feedback resistor; bandwidth is limited to ~1.5 MHz at unity gain, suitable for photodiode or current-sense amplifier applications up to 100 kHz signal bandwidth.

Is the HRTIM1 module capable of generating complementary PWM outputs with programmable dead time?

Yes - HRTIM1 supports complementary PWM pairs on each of its six channels, with independent dead-time insertion (adjustable in 125 ps steps) and automatic fault-induced shutdown. Dead-time values are stored in dedicated registers and applied synchronously across all channels, ensuring consistent timing across multi-phase topologies like three-phase inverters or interleaved buck converters.