STMicroelectronics STM32F334K8T6TR

Overview

STM32F334K8T6TR 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 timer (HRTIM1) with 217 ps resolution. It integrates three 12-bit DACs, two ADCs (0.20 µs conversion), three rail-to-rail comparators, one programmable-gain operational amplifier, and CAN 2.0B interface - enabling precision motor control and digital power conversion in compact industrial drives.

For engineers reviewing the STM32F334K8T6TR datasheet, STM32F334K8T6TR pinout, STM32F334K8T6TR application, or STM32F334K8T6TR equivalent, key selection criteria include HRTIM timing precision for gate-driver synchronization, analog peripheral supply voltage ranges (VDDA 2.0–3.6 V), DAC/ADC co-sampling capability, and LQFP32 package I/O density for space-constrained power stage control.

Technical Context

The device implements a tightly coupled Arm Cortex-M4 core with single-cycle multiply and hardware divide, supporting DSP instructions for real-time control loops. Its HRTIM1 subsystem features six 16-bit counters, ten PWM outputs, five fault inputs, and sub-nanosecond timing resolution - optimized for synchronous rectification and multi-phase interleaved DC-DC converters.

Analog integration includes a dedicated OPAMP usable in PGA mode with full terminal access, three ultra-fast comparators with propagation delay <100 ns, and dual 12-channel ADCs with selectable 6/8/10/12-bit resolution - all sharing independent analog supply rails (VDDA 2.0–3.6 V, VREF+ 2.4–3.6 V) to maintain signal integrity under dynamic load conditions.

Key Specifications

Pinout & Package

LQFP32 (7 × 7 mm, 0.8 mm pitch) package with 25 general-purpose I/O pins, all mappable to external interrupt vectors; 5 V-tolerant on selected pins. Includes dedicated HRTIM fault inputs (HRTIM_FLT1–5), synchronous event inputs (HRTIM_EEV1–10), and analog-dedicated pins (VREF+, VDDA, VSSA).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F334K8T6TR, STM32F303K8T6 sacrifices HRTIM and analog richness for lower BOM cost, while STM32G431KB6 extends timing precision and analog capability - making the F334 optimal for established industrial drive platforms balancing performance, legacy code compatibility, and LQFP32 footprint constraints.

Availability

STM32F334K8T6TR is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, energy metering interfaces, and PLC I/O modules requiring stable component supply and long-term production continuity.

Supply support for STM32F334K8T6TR 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 with vertical manufacturing capabilities.

This device belongs to the STM32F3 series - designed specifically for cost-sensitive, analog-intensive real-time control applications such as motor drives, digital power conversion, and industrial automation where precision timing and integrated signal conditioning are critical.

FAQ

What is the maximum operating temperature range for STM32F334K8T6TR?

The STM32F334K8T6TR is qualified for industrial temperature range: –40 °C to +105 °C. This is confirmed in Section 6.3.1 of DS9994 Rev 9, with thermal characteristics validated up to 105 °C junction temperature under specified PCB copper area and airflow conditions.

Does STM32F334K8T6TR support USB connectivity?

No, the STM32F334K8T6TR does not include a USB peripheral. Its communication interfaces are limited to CAN 2.0B, up to three USARTs (one with ISO7816), one I²C, and one SPI - as explicitly listed in Section 3.16 of the datasheet.

Can the internal op-amp be used without external resistors?

Yes - the single operational amplifier supports programmable-gain amplifier (PGA) mode with gain settings of 1, 2, 4, 8, 16, or 32 using only internal switches; no external resistors are required for these configurations, as detailed in Section 3.12 and Table 6.3.22 of DS9994 Rev 9.

Is the HRTIM1 module available in all package variants of STM32F334K8T6TR?

Yes - HRTIM1 is a core peripheral present across all STM32F334x8 devices regardless of package (LQFP32/LQFP48/UFQFPN32/WLCSP49). Pin mapping for HRTIM signals (e.g., HRTIM_CHA1, HRTIM_FLT1) is fully defined for LQFP32 in Table 13 of DS9994 Rev 9.