STM32F334K6T7XXX STMicroelectronics Integrated Circuit (Quad Flat Packages) In Stock
The STM32F334K6T7XXX is a 32-bit ARM Cortex-M4 microcontroller with FPU running at up to 32 MHz, featuring 12-bit ADC, DAC, and DMA channels in a compact QFP package. It integrates high-resolution PWM timers specifically optimized for digital power conversion and motor control applications. Available in production quantities with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Quad Flat Packages
- Pin Count
- 32
- Lifecycle
- ACTIVE
- Datasheet
- STM32F334K6T7XXX Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- ARM Cortex-M4 core with hardware floating-point unit (FPU) enables efficient DSP and control algorithms at 32 MHz
- High-resolution timer (HRTIM) with sub-nanosecond resolution optimized for digital power supply control
- Integrated 12-bit ADC and DAC channels support closed-loop analog feedback in power conversion designs
- DMA controller offloads data transfers from the CPU, freeing cycles for real-time control tasks
Applications
The STM32F334K6T7XXX is designed for digital power conversion applications including DC-DC converters, motor drives, and uninterruptible power supplies where high-resolution PWM generation and fast ADC sampling are required simultaneously. It also suits industrial sensor nodes, smart actuators, and inverter control boards that need the computational efficiency of a Cortex-M4 FPU in a space-saving QFP package.
Specifications
| YTEOL | 8.28 |
| Has ADC | YES |
| Bit Size | 32 |
| Boundary Scan | YES |
| CPU Family | CORTEX-M4 |
| Clock Frequency-Max | 32MHz |
| DAC Channels | YES |
| DMA Channels | YES |
| Format | FLOATING POINT |
| Integrated Cache | NO |
| JESD-30 Code | S-PQFP-G32 |
| Low Power Mode | YES |
| Number of DMA Channels | 7 |
| Number of External Interrupts | 16 |
| Number of I/O Lines | 25 |
| Number of Serial I/Os | 3 |
| Number of Timers | 10 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | QFP32,.35SQ,32 |
| Package Shape | SQUARE |
| Package Style | FLATPACK, LOW PROFILE |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| RAM (bytes) | 16384 |
| ROM (words) | 32768 |
| ROM Programmability | FLASH |
| Speed | 72MHz |
| Supply Current-Max | 32.4mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 2V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.8mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Quad Flat Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | 3A991.a.2 |
| HTS Code | 8542.31.00.25 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for STM32F334K6T7XXX:
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4 CPU, 72MHz, CMOS, PQFP32
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4 CPU, 72MHz, CMOS, PQFP32
Frequently Asked Questions
What is the maximum clock frequency of the STM32F334K6T7XXX and how does it handle floating-point operations?
The STM32F334K6T7XXX operates at up to 32 MHz with an ARM Cortex-M4 core that includes a hardware floating-point unit (FPU) conforming to the IEEE 754 single-precision standard. Single-precision multiply-accumulate operations complete in 1 cycle, enabling PID control loops and DSP algorithms to run at full speed without software floating-point overhead.
Which digital power supply designs benefit most from the STM32F334K6T7XXX high-resolution timer?
Switched-mode power supply designs such as synchronous buck converters, boost converters, and resonant LLC topologies benefit from the HRTIM peripheral, which provides PWM resolution finer than 100 ps. This allows precise duty cycle adjustment for tight output voltage regulation in designs operating at switching frequencies from 100 kHz to several MHz.
How many ADC and DAC channels are available on the STM32F334K6T7XXX for analog feedback loops?
The STM32F334K6T7XXX integrates a 12-bit ADC with multiple input channels and at least one 12-bit DAC output channel. The ADC can be triggered directly by the HRTIM timer events, enabling sub-microsecond latency from PWM edge to analog measurement, which is essential for fast current-mode control in switching power converters.
When should an engineer select the STM32F334K6T7XXX over a standard STM32F3 variant without HRTIM?
Choose the STM32F334K6T7XXX when the application requires PWM resolution beyond the 16-bit standard timer's capability or switching frequencies above 200 kHz. Standard STM32F3 timers provide at most 1/32 MHz (approximately 31 ns) resolution, while the HRTIM achieves sub-nanosecond steps, a critical advantage for minimizing output ripple in high-frequency power converters.
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