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STMicroelectronics STM32F334K4T6
- Part No.:
- STM32F334K4T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
STM32F334K4T6.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,445
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Product details
Overview
STM32F334K4T6 from STMicroelectronics is an Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 72 MHz, featuring 32 KB Flash, 12 KB SRAM, and integrated high-resolution timer (HRTIM1) with 217 ps resolution. It includes three 12-bit DACs, three ultra-fast rail-to-rail comparators, one operational amplifier, two ADCs (12/10/8/6-bit selectable), and CAN 2.0B interface - deployed in digital power supplies for precise PWM control and real-time feedback loops.
For engineers reviewing the STM32F334K4T6 datasheet, STM32F334K4T6 pinout, STM32F334K4T6 application, or STM32F334K4T6 equivalent, key selection criteria include HRTIM timing precision, analog peripheral integration (DAC/OPAMP/COMP), 5 V-tolerant I/O count (up to 28), LQFP32 package footprint, and support for digital power control algorithms requiring sub-nanosecond PWM edge placement.
Technical Context
The STM32F334K4T6 implements a tightly coupled analog-digital architecture optimized for closed-loop digital power conversion: its HRTIM1 provides six 16-bit counters with synchronized fault handling, deadtime insertion, and external event triggering - enabling multi-phase interleaved DC-DC controllers. The embedded OPAMP supports programmable gain amplifier (PGA) mode with full terminal access, while DAC outputs feed comparator references or analog control paths.
Its dual ADC system supports simultaneous sampling across up to 21 channels with hardware oversampling and differential mode, and the 32-pin LQFP package allocates dedicated analog supply pins (VDDA/VSSA) with independent 2.0–3.6 V range, ensuring noise isolation for precision measurement in SMPS feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 72 MHz max - enables real-time execution of PID, SVM, and predictive control algorithms in firmware. |
| Flash / SRAM | 32 KB Flash, 12 KB SRAM with HW parity - sufficient for certified digital power firmware with safety checksums and runtime integrity checks. |
| HRTIM Resolution | 217 ps timing resolution - allows <1 ns PWM edge placement accuracy for >1 MHz switching frequencies in GaN/SiC converters. |
| Analog Peripherals | 3× 12-bit DACs, 3× comparators, 1× OPAMP (PGA mode), 2× ADCs - supports full analog signal chain replacement (reference generation, error amplification, sensing). |
| Digital Interfaces | CAN 2.0B, 3× USART (1 with ISO7816), 1× I2C, 1× SPI - enables communication with PMBus-compatible power ICs and host monitoring systems. |
| I/O Count & Tolerance | 28 GPIOs, all mappable to interrupts, several 5 V-tolerant - simplifies interface with legacy logic, optocouplers, and industrial-level signaling. |
| Supply Range | VDD/VDDA: 2.0–3.6 V - compatible with single 3.3 V rail design; VBAT backup supports RTC during main power loss. |
Pinout & Package
LQFP32 (7 × 7 mm, 0.8 mm pitch) package with exposed thermal pad - optimized for compact digital power modules and motor gate driver boards requiring low-inductance layout and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Main/analog power supply | Separate 2.0–3.6 V inputs enable analog domain isolation; VDDA powers ADC/DAC/OPAMP/COMP for <1 LSB INL stability. |
| VSS, VSSA | Main/analog ground | Dedicated analog ground plane connection minimizes coupling noise into sensitive analog peripherals. |
| PA0–PA15, PB0–PB12 | General-purpose I/O | 28 total GPIOs; multiple pins support HRTIM CHx outputs, ADC inputs, DAC outputs, and comparator inputs - enabling full PWM + sensing integration. |
| PA13/PA14/PA15 | SWD debug interface | Serial Wire Debug (SWD) only - no JTAG pins in LQFP32; enables in-circuit programming and real-time trace without extra header footprint. |
| NRST | Active-low reset | Programmable voltage detector (PVD) and POR/PDR ensure robust startup and brownout recovery in unregulated power environments. |
| BOOT0 | Boot mode select | External pull-up/down configures boot from System Memory (for DFU) or Flash - critical for field firmware updates in power equipment. |
Key Features
| Feature | Design Value |
|---|---|
| HRTIM1 with fault protection | Six 16-bit timers, 10 PWM outputs, 5 fault inputs, and automatic deadtime insertion - enables safe multi-phase synchronous rectification and overcurrent shutdown in <500 ns. |
| Integrated analog signal chain | Three DACs drive comparator references or OPAMP inputs; OPAMP supports PGA mode with gain up to 16× - eliminates external opamp and reference ICs in voltage-mode control loops. |
| Dual ADC with hardware oversampling | Two 12-bit ADCs, 0.2 µs conversion, selectable resolution (6–12 bit), differential mode - achieves effective 14-bit resolution at 100 kSPS for current/voltage sensing in isolated DC-DC stages. |
| Capacitive touch sensing (TSC) | Up to 18 channels on GPIOs - supports front-panel user interface on power supplies without adding dedicated touch controller IC. |
| Low-power operation | Stop mode current <1.7 µA (typ), wakeup in <5 µs - enables energy-efficient standby states while retaining RTC and backup registers for time-stamped fault logging. |
Applications
| Digital Power Supply Controller | GaN/SiC Gate Driver Interface |
|---|---|
|
Use Scenario: Closed-loop regulation in 1–3 kW telecom rectifiers and server PSUs using GaN FETs. IC Role / Device Role / Timing Role: Primary controller executing digital PWM, current/voltage loop compensation, and HRTIM-based phase-shifted modulation. Use Value: 217 ps HRTIM resolution enables precise deadtime tuning and adaptive timing margins to prevent shoot-through in fast-switching topologies. |
Use Scenario: Driving half-bridge GaN drivers with isolated level-shifted PWM and real-time fault feedback. IC Role / Device Role / Timing Role: Interface MCU generating isolated PWM signals and decoding desaturation fault pulses via comparators. Use Value: Three ultra-fast comparators (<100 ns response) directly monitor drain-source voltage for overcurrent detection without external fast comparators. |
| Industrial Motor Control Module | Programmable Power Source |
|
Use Scenario: Compact BLDC inverter for HVAC blowers and pumps with sensorless FOC. IC Role / Device Role / Timing Role: Real-time motor commutation engine using HRTIM for 6-step or SVM PWM, ADC for back-EMF sampling, and OPAMP for current shunt amplification. Use Value: Integrated OPAMP with PGA mode replaces discrete instrumentation amp, reducing BOM count and PCB area in cost-sensitive motor drives. |
Use Scenario: Bench-grade programmable DC source with remote voltage/current programming and dynamic load simulation. IC Role / Device Role / Timing Role: Precision analog waveform generator using three DACs for independent voltage, current, and ramp reference synthesis. Use Value: Simultaneous 12-bit DAC outputs with <1 LSB monotonicity enable smooth, glitch-free voltage/current sweeps and arbitrary waveform generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital power control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F334R6T6 | LQFP64 package, 51 GPIOs, 64 KB Flash, same HRTIM/peripheral set - adds more ADC channels and I/O flexibility. | Required when >28 GPIOs needed for multi-rail sequencing, additional analog inputs, or expanded communication interfaces (e.g., dual CAN). | Select for higher I/O density and larger firmware capacity; board redesign required due to 64-pin footprint and different thermal pad layout. |
| STM32G431KB6 | Same LQFP32 package, 128 KB Flash, 32 KB SRAM, enhanced HRTIM (217 ps), added CORDIC/ART accelerators - newer G4-series silicon. | Better suited for complex control laws (e.g., model-predictive control) and firmware-over-the-air updates due to larger memory and math acceleration. | Choose for future-proof designs needing extended code space, faster computation, or long-term ST roadmap alignment - requires minor peripheral register mapping update. |
Compared with STM32F334R6T6, the K4T6 offers identical analog/digital capability in a smaller footprint but fewer I/Os; versus STM32G431KB6, it trades raw compute headroom and memory for proven qualification in industrial power applications and lower toolchain migration effort.
Availability
STM32F334K4T6 is available at Aetrix Electronics and suitable for digital power supplies, motor control modules, and programmable bench power sources requiring stable component supply, long-lifecycle assurance, and consistent parametric performance across production batches.
Supply support for STM32F334K4T6 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, and analog/mixed-signal ICs for industrial, automotive, and consumer markets.
The STM32F3 series targets cost-sensitive, analog-rich embedded control applications - specifically engineered for digital power conversion, motor control, and sensor fusion where precision timing and integrated analog peripherals reduce system complexity.
FAQ
Does STM32F334K4T6 support hardware CRC calculation?
Yes, it integrates a dedicated cyclic redundancy check (CRC) calculation unit compliant with IEEE-802.3, enabling fast checksum generation for firmware integrity verification, communication packet validation, and secure bootloader operations without CPU overhead.
What is the maximum operating temperature range for this device?
The STM32F334K4T6 is qualified for industrial temperature range: –40 °C to +85 °C ambient, with thermal characteristics validated per JEDEC JESD51 standards - suitable for enclosed power supply enclosures and motor drive cabinets without forced cooling.
Can the OPAMP be used without external resistors in PGA mode?
Yes, the embedded OPAMP supports programmable gain amplifier (PGA) mode with internal resistor network options (gain = 1, 2, 4, 8, 16), allowing direct configuration via OPAMPx_CSR register - eliminating external feedback components for standard gain settings in voltage sensing paths.
Is CAN FD supported on the CAN interface?
No, the integrated CAN peripheral supports only ISO 11898-1:2015 Classical CAN 2.0B (up to 1 Mbit/s), not CAN FD. It lacks the extended data length and flexible bit rate features - suitable for basic power system telemetry and status reporting, not high-bandwidth diagnostics.
STM32F334K4T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-LQFP
- Series:
- STM32F3
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 72MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- DMA, POR, PWM, WDT
- Number of I/O:
- 25
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 9x12b; D/A 3x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F334K4T6 FAQ
1.How can I place an order for STM32F334K4T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F334K4T6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32F334K4T6 reliable?
The price and inventory of STM32F334K4T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F334K4T6 is usually 5 days.
3.What payment methods are accepted for STM32F334K4T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F334K4T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F334K4T6?
STM32F334K4T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F334K4T6 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32F334K4T6?
For technical support, including STM32F334K4T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F334K4T6 requirements.
6.How does Aetrix verify that STM32F334K4T6 is sourced from the original manufacturer or authorized distributors?
All STM32F334K4T6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32F334K4T6 meets industry standards.
7.What is the process for return or replacement of STM32F334K4T6?
All STM32F334K4T6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F334K4T6, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32F334K4T6 part is unused and in its original packaging.
Return procedure for STM32F334K4T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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