STMicroelectronics STM32F334C8T7TR

Overview

STM32F334C8T7TR from STMicroelectronics is an Arm® Cortex®-M4 32-bit MCU with FPU, 64 KB Flash, 16 KB SRAM, and integrated high-resolution timer (HRTIM1) delivering 217 ps timing resolution. It integrates three 12-bit DACs, three ultra-fast rail-to-rail comparators, one programmable-gain operational amplifier, two ADCs, and a capacitive sensing controller - enabling precision analog control in digital power supplies and motor drives.

For engineers reviewing the STM32F334C8T7TR datasheet, STM32F334C8T7TR pinout, STM32F334C8T7TR application, or STM32F334C8T7TR equivalent, key selection criteria include HRTIM1 sub-nanosecond PWM capability, dual ADC sampling synchronization, analog supply flexibility (2.0–3.6 V), CAN 2.0B interface, and LQFP48 package compatibility for industrial power conversion designs.

Technical Context

The device implements a tightly coupled Arm Cortex-M4 core with hardware FPU and DSP extensions, operating up to 72 MHz with single-cycle multiply and hardware divide. Its interconnect matrix enables concurrent peripheral access without bus contention, supporting deterministic real-time response in closed-loop control systems.

HRTIM1 provides six 16-bit counters with 217 ps resolution, 10 PWM outputs, five fault inputs, and synchronous event chaining - enabling precise phase-shifted, interleaved, or complementary PWM generation for resonant LLC, SiC/GaN gate driving, and multi-phase motor control.

Key Specifications

Pinout & Package

LQFP48 (7 × 7 mm, 0.5 mm pitch), ECOPACK®2-compliant, with 37 GPIOs (up to 51 total depending on package variant), all mappable to external interrupt vectors; 5 V-tolerant on selected pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F334C8T7TR, the R8T6 offers greater I/O scalability in LQFP64, while the G431KB6 delivers higher clock speed, finer HRTIM resolution, and upgraded analog peripherals - making it suitable for advanced digital power and motor control where performance headroom is critical.

Availability

STM32F334C8T7TR is available at Aetrix Electronics and suitable for digital power supplies, motor drives, industrial CAN nodes, and programmable power sequencers requiring stable component supply and long-term manufacturability.

Supply support for STM32F334C8T7TR 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 specializing in microcontrollers, power management, analog, and MEMS technologies, with strong focus on industrial, automotive, and smart power applications.

The STM32F3 series targets cost-sensitive, analog-intensive embedded control - combining high-precision timers, rich analog peripherals, and Cortex-M4 performance for digital power, motor control, and sensing applications.

FAQ

What is the maximum operating frequency of the STM32F334C8T7TR?

The STM32F334C8T7TR operates at a maximum CPU frequency of 72 MHz using its internal PLL. This is achieved by configuring the HSI (8 MHz) or HSE (4–32 MHz) oscillator as the PLL source, with programmable multiplication factors. The 72 MHz clock feeds the AHB, APB1, and APB2 buses, ensuring full peripheral performance without bottlenecks.

Does the STM32F334C8T7TR support hardware CRC calculation?

Yes, the STM32F334C8T7TR includes a dedicated cyclic redundancy check (CRC) calculation unit compliant with IEEE-802.3. It supports 32-bit polynomial configuration and can compute CRC over memory blocks or data streams in hardware, reducing CPU load during firmware updates, communication packet validation, or flash integrity checks.

Can the HRTIM1 module generate complementary PWM signals with programmable deadtime?

Yes, HRTIM1 supports fully configurable complementary PWM outputs with independent deadtime insertion (down to 217 ps steps), fault protection masking, and synchronous update. Each of its six timers can drive high-side/low-side pairs, with deadtime values set per channel via dedicated registers - essential for preventing shoot-through in half-bridge and full-bridge topologies.

What analog supply voltage ranges are required for the ADC, DAC, and op-amp?

The ADC requires VDDA between 2.0 V and 3.6 V; DACs need 2.4 V to 3.6 V; the op-amp operates with VDDA from 2.4 V to 3.6 V. All analog peripherals share the same VDDA rail, so design must ensure this supply meets the highest minimum (2.4 V) while staying within absolute maximum ratings - typically regulated separately from digital VDD for noise immunity.