STMicroelectronics STM32F334C6T7TR

Overview

STM32F334C6T7TR from STMicroelectronics is an Arm® Cortex®-M4 32-bit MCU with FPU, 64 KB Flash, 16 KB SRAM, and integrated high-resolution timer (HRTIM1) with 217 ps resolution. It features three 12-bit DACs, three ultra-fast rail-to-rail comparators, one programmable-gain operational amplifier, and dual ADCs for precision analog control in digital power supplies and motor drives.

For engineers reviewing the STM32F334C6T7TR datasheet, STM32F334C6T7TR pinout, STM32F334C6T7TR application, or STM32F334C6T7TR equivalent, key selection criteria include HRTIM timing precision, analog peripheral integration (DAC/COMP/OPAMP), CAN 2.0B interface support, LQFP48 package compatibility, and 2.0–3.6 V supply operation with hardware parity protection.

Technical Context

The device implements a tightly coupled Arm Cortex-M4 core with single-cycle multiply and HW divide, running up to 72 MHz. Its analog subsystem includes independent 2.4–3.6 V analog supplies for DACs and OPAMP, plus 2.0–3.6 V for comparators and ADCs-enabling simultaneous high-speed control and sensing without supply crosstalk.

HRTIM1 provides six 16-bit counters with sub-nanosecond resolution, 10 PWM outputs, five fault inputs, and synchronous event chaining-designed specifically for resonant LLC, PFC, and multi-phase motor control where timing jitter directly impacts efficiency and EMI.

Key Specifications

Pinout & Package

LQFP48 (7 × 7 mm, 0.5 mm pitch), ECOPACK®2-compliant, with 37 I/O pins (5 V-tolerant on selected ports), dedicated HRTIM fault/event pins, and separate VDDA/VSSA analog supply rails.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F334R6T7, the C6T7TR saves board space and cost in compact power modules; versus STM32G431CBT6, it offers proven qualification and simpler analog configuration at lower code density requirements.

Availability

STM32F334C6T7TR is available at Aetrix Electronics and suitable for digital power supplies, motor drive inverters, industrial CAN nodes, and capacitive touch HMI systems requiring stable component supply and long-term production continuity.

Supply support for STM32F334C6T7TR 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, and analog/mixed-signal ICs for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, analog-rich embedded control applications - designed specifically for digital power conversion, motor control, and sensor fusion where precision timing and integrated analog peripherals reduce system complexity.

FAQ

What is the maximum operating frequency of the STM32F334C6T7TR?

The STM32F334C6T7TR operates at a maximum CPU frequency of 72 MHz using its internal PLL, derived from either the 8 MHz HSI oscillator or an external 4–32 MHz crystal. This frequency is fully supported across the entire commercial temperature range (–40°C to +85°C) and ensures deterministic execution of real-time control algorithms.

Does the STM32F334C6T7TR support hardware CRC calculation?

Yes, the STM32F334C6T7TR includes a dedicated cyclic redundancy check (CRC) calculation unit compliant with IEEE-802.3. It supports programmable polynomial (default 32-bit CRC-32) and processes data in 32-bit words, enabling fast firmware image integrity verification and secure bootloader operations without CPU overhead.

Can the integrated OPAMP be used in standalone instrumentation amplifier configuration?

No - the single OPAMP in the STM32F334C6T7TR supports only non-inverting PGA mode (gain = 1–100×) with fixed internal resistor network. It lacks differential inputs or external resistor pins required for true instrumentation amplifier topology; external opamps are needed for differential signal conditioning.

Is the HRTIM1 peripheral available on all package variants of the STM32F334C6T7TR?

Yes - HRTIM1 is fully implemented and functionally identical across all STM32F334C6 package options (LQFP48, UFQFPN32, WLCSP49). Pin mapping differs per package, but all expose the same 10 PWM outputs, 5 fault inputs, and synchronization signals as defined in the reference manual RM0316.