STMicroelectronics STM32F334R8T7TR

Overview

STM32F334R8T7TR from STMicroelectronics is an Arm® Cortex®-M4 32-bit MCU with FPU, 64 KB Flash, 16 KB SRAM, dual 12-bit ADCs (0.20 µs conversion), triple 12-bit DACs, and a 217 ps resolution HRTIM for precision power control. It integrates one rail-to-rail op-amp, three ultra-fast comparators, and capacitive touch sensing-targeting digital power supplies, motor control, and LED lighting drivers.

For engineers reviewing the STM32F334R8T7TR datasheet, STM32F334R8T7TR pinout, STM32F334R8T7TR application, or STM32F334R8T7TR equivalent, key selection criteria include HRTIM timing resolution, analog peripheral supply ranges (VDDA: 2.0–3.6 V), DAC/ADC linearity specs, op-amp gain-bandwidth in PGA mode, and LQFP64 package thermal performance under continuous PWM switching loads.

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 HW divide. Its interconnect matrix enables concurrent access to Flash, SRAM, and peripherals without bus contention.

HRTIM1 provides six 16-bit counters with 217 ps resolution, 10 PWM outputs, five fault inputs, and synchronous event chaining-enabling sub-nanosecond dead-time control and phase-shifted multi-phase topologies. Analog subsystems operate on independent VDDA (2.0–3.6 V) and VREF+ (2.4–3.6 V) rails, with dedicated hardware parity for SRAM and CCM memory blocks.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 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 mixed-signal control applications.

Compared with STM32F303RET6, STM32F334R8T7TR delivers superior analog integration and nanosecond-precision timing at lower cost; versus STM32G474RET6, it trades peak CPU speed and Flash size for proven qualification in industrial power applications and lower system BOM cost.

Availability

STM32F334R8T7TR is available at Aetrix Electronics and suitable for digital power supplies, motor control systems, and LED lighting drivers requiring stable component supply and long-term industrial lifecycle support.

Supply support for STM32F334R8T7TR 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, designing and manufacturing microcontrollers, power ICs, sensors, and analog devices for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, analog-intensive real-time control applications-specifically engineered for digital power conversion, motor control, and capacitive touch interfaces with integrated high-resolution timers and precision analog peripherals.

FAQ

What is the maximum operating temperature range for STM32F334R8T7TR?

The STM32F334R8T7TR is qualified for industrial operation from –40°C to +105°C ambient temperature. This rating is validated per JEDEC JESD47 and confirmed in Section 6.3.2 of DS9994 Rev 9, with thermal derating applied above 85°C for sustained 72 MHz operation and full analog peripheral accuracy.

Does STM32F334R8T7TR support hardware CRC calculation?

Yes, it includes a dedicated cyclic redundancy check (CRC) calculation unit compliant with IEEE 802.3, supporting 32-bit polynomial computation in a single cycle. The peripheral is accessible via memory-mapped registers and used for firmware image integrity verification and communication frame checksums per Section 3.3 of the datasheet.

Can the op-amp be configured as a programmable-gain amplifier (PGA)?

Yes, the integrated op-amp supports PGA mode with gains of 1, 2, 4, 8, 16, or 32 via internal resistor ladder selection. All terminals (in+, in−, out) are externally accessible on dedicated pins (PA7, PA6, PA1), allowing external feedback for custom gain or filtering per Section 3.12 and Table 64 of DS9994 Rev 9.

Is the HRTIM compatible with external synchronization signals?

Yes, HRTIM1 supports both synchronization input (SYNCHRO_IN) and output (SYNCHRO_OUT) pins for master-slave timing coordination across multiple controllers. Synchronization latency is specified at ≤217 ps, enabling deterministic phase alignment in multi-phase power converters per Section 3.14.1 and Table 58 of the datasheet.