STMicroelectronics STM32F334C6T6TR

Overview

STM32F334C6T6TR from STMicroelectronics is an Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 72 MHz, featuring 32 KB Flash, 12 KB SRAM, two 12-bit ADCs (0.20 µs conversion), three 12-bit DACs, and a 217 ps-resolution High-Resolution Timer (HRTIM1). It integrates one rail-to-rail op-amp, three ultra-fast comparators, and capacitive touch sensing-designed for precision digital power control in AC/DC adapters and motor gate drivers.

For engineers reviewing the STM32F334C6T6TR datasheet, STM32F334C6T6TR pinout, STM32F334C6T6TR application, or STM32F334C6T6TR equivalent, key selection criteria include HRTIM timing resolution, analog peripheral supply range (2.4–3.6 V), CAN 2.0B interface support, LQFP48 package compatibility, and real-time PWM deadtime generation capability.

Technical Context

The device implements a tightly coupled Arm Cortex-M4 core with hardware FPU and DSP extensions, enabling deterministic execution of complex control loops. Its HRTIM1 block delivers sub-nanosecond timing precision across six 16-bit counters with synchronized PWM outputs, five fault inputs, and low-latency external event response.

Analog subsystem integration includes a programmable-gain op-amp (PGA mode), three independent comparators with internal reference options, and dual ADCs supporting simultaneous sampling and differential input-each with selectable 6/8/10/12-bit resolution and dedicated 2.0–3.6 V analog supply domain.

Key Specifications

Pinout & Package

LQFP48 (7 × 7 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant ECOPACK®2 construction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F334C6T6TR, the R6 variant offers greater memory and I/O scalability at the cost of board space, while the G431KB6 delivers superior processing headroom and finer timing resolution but requires external analog fault detection circuitry.

Availability

STM32F334C6T6TR is available at Aetrix Electronics and suitable for AC/DC digital power supplies, brushless DC motor gate drivers, industrial PLC I/O modules, and smart lighting ballast control requiring stable component supply across extended production cycles.

Supply support for STM32F334C6T6TR 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-intensive embedded control applications-specifically engineered for digital power conversion, motor control, and capacitive touch interfaces with integrated high-precision timing and signal conditioning.

FAQ

Does STM32F334C6T6TR support USB device functionality?

No. The STM32F334C6T6TR does not integrate a USB PHY or USB controller. Pins PA11/PA12 are not functional for USB and are either unused or repurposed as general-purpose I/O. USB capability is present only in higher-density variants like STM32F334K8 or STM32F334R8.

What is the maximum operating temperature range for this part?

The STM32F334C6T6TR is rated for industrial temperature operation from –40 °C to +85 °C. This is confirmed by ST's official datasheet (DS9994 Rev 9, Section 6.3.1) and applies to all LQFP48-packaged F334x6 devices under specified VDD/VDDA conditions.

Can the HRTIM1 module drive external MOSFET gate drivers directly?

Yes. HRTIM1 outputs are CMOS-compatible with 20 mA sink/source capability and 3.3 V logic levels, allowing direct connection to standard gate drivers such as ST's STL11N3LLH6 or TI's UCC27531. No level-shifting is required for 3.3 V–5 V gate drive interfaces.

Is the internal temperature sensor calibrated at the factory?

Yes. Each unit undergoes individual calibration during production, with slope and offset values stored in system memory at addresses 0x1FFFF7B8 (slope) and 0x1FFFF7C2 (calibration point). These values are accessible via HAL library functions and enable ±1.5 °C accuracy across the full operating range.