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STMicroelectronics STM32F334R6T6
- Part No.:
- STM32F334R6T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F334R6T6.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,825
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Product details
Overview
STM32F334R6T6 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 high-resolution timer (HRTIM1). It integrates one rail-to-rail op-amp, three ultra-fast comparators, and capacitive touch sensing-targeting digital power control in AC/DC SMPS and motor drive gate driver modules.
For engineers reviewing the STM32F334R6T6 datasheet, STM32F334R6T6 pinout, STM32F334R6T6 application, or STM32F334R6T6 equivalent, key selection criteria include HRTIM timing precision for synchronous rectification, analog peripheral supply voltage ranges (VDDA = 2.0–3.6 V), DAC settling time (≤5 µs), op-amp gain-bandwidth (10 MHz), and LQFP64 package thermal resistance (θJA = 40 °C/W).
Technical Context
The device implements a tightly coupled Cortex-M4 core with hardware FPU and DSP extensions, enabling real-time execution of PID loops and observer algorithms at ≤72 MHz. Its analog subsystem features independent VDDA/VREF+ supplies, allowing simultaneous high-precision ADC sampling (12-bit, ±1 LSB INL) and DAC output (12-bit monotonicity) without cross-coupling.
HRTIM1 provides six 16-bit counters with 217 ps resolution, five fault inputs, and synchronized PWM outputs-designed for interleaved multi-phase power converters requiring sub-nanosecond dead-time control and cycle-by-cycle protection response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 72 MHz max - enables real-time control of 3-phase PFC + LLC resonant converter in single chip |
| Flash / SRAM | 64 KB Flash, 16 KB SRAM - sufficient for dual-loop digital control firmware with safety checksum and parameter storage |
| ADC Performance | 2 × 12-bit ADCs, 0.20 µs conversion, 21 channels - supports simultaneous voltage/current sensing across 3-phase inverter legs |
| DAC Output | 3 × 12-bit DACs, 2.4–3.6 V analog supply - drives reference voltages for current shunt amplifiers or optocoupler biasing |
| HRTIM Resolution | 217 ps timing resolution, 10-channel PWM - achieves <1 ns dead-time accuracy critical for SiC/GaN half-bridge gate driving |
| Analog Peripherals | 1 op-amp (PGA mode), 3 comparators (rail-to-rail), temp sensor - enables on-chip current limiting, overvoltage detection, and thermal foldback |
| Package | LQFP64 (10 × 10 mm), ECOPACK®2 - industrial-grade thermal performance (θJA = 40 °C/W) for convection-cooled power boards |
Pinout & Package
LQFP64 package with 0.5 mm pitch, 10 × 10 mm body, and exposed thermal pad (EPAD) for enhanced heat dissipation in power-conversion applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Digital/analog power supply | Separate 2.0–3.6 V domains prevent noise coupling between digital logic and precision analog circuits |
| VSS, VSSA | Digital/analog ground | Independent ground planes required to maintain ADC/DAC SNR >70 dB and comparator propagation delay <50 ns |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15 | General-purpose I/O | 51 pins total; up to 21 support ADC input, 18 support capacitive sensing, all mappable to EXTI for fast fault response |
| PHRTIMx_CHy | HRTIM PWM output | Dedicated high-speed pins with <2 ns rise/fall time for direct connection to gate drivers without external buffers |
| COMP1_INP, COMP1_INN | Comparator input | Rail-to-rail inputs enable direct connection to shunt resistor differential nodes without level-shifting |
| OPAMP1_VINP, OPAMP1_VINN, OPAMP1_VOUT | Op-amp terminals | Full access to all pins allows PGA configuration (gain = 2–16) for current-sense amplifier front-end |
Key Features
| Feature | Design Value |
|---|---|
| HRTIM1 with 217 ps resolution | Enables precise phase-shift control and adaptive dead-time compensation in resonant topologies |
| Dual 12-bit ADCs with hardware oversampling | Delivers effective 14-bit resolution at 1 MSPS for accurate RMS current measurement in noisy EMI environments |
| Triple 12-bit DACs with independent triggers | Supports synchronized waveform generation for multi-channel feedback references (e.g., Vref, Ilim, Tprot) |
| Single op-amp with programmable gain | Configurable as transimpedance amplifier for optical current sensors or as unity-gain buffer for DAC outputs |
| Capacitive touch sensing (18 channels) | Enables integrated user interface on power supply front panel without external controller |
Applications
| AC/DC Digital Power Supply | Three-Phase Motor Gate Driver |
|---|---|
Use Scenario: 1 kW server PSU with active clamp forward topology and digital PFC stage. IC Role / Device Role / Timing Role: Primary controller executing dual-loop (voltage + current) regulation, HRTIM-driven synchronous rectification, and real-time fault shutdown. Use Value: 217 ps HRTIM resolution reduces conduction loss by 3.2% vs. 1 ns timers; integrated DACs eliminate 3 external DAC ICs. | Use Scenario: 750 W servo drive with field-oriented control (FOC) and SiC MOSFET half-bridges. IC Role / Device Role / Timing Role: Real-time FOC engine with space-vector PWM generation, current reconstruction via dual ADCs, and overcurrent protection via comparators. Use Value: Simultaneous ADC sampling on 6 current paths enables <1 µs current loop update; op-amp PGA configures shunt amplifier gain dynamically. |
| Resonant LLC Converter | Programmable DC Load |
Use Scenario: 500 W telecom brick using variable-frequency LLC with adaptive frequency sweep. IC Role / Device Role / Timing Role: Frequency modulator with HRTIM-based variable-period PWM, temperature-compensated DAC reference, and thermal foldback via internal sensor. Use Value: Hardware-accelerated phase-shift modulation reduces CPU load by 42%; internal temp sensor eliminates external NTC circuit. | Use Scenario: 200 W battery simulator with programmable IV curve and dynamic load stepping. IC Role / Device Role / Timing Role: Precision current source controller using DAC output + op-amp, fast transient response via comparator-based current limiting. Use Value: 12-bit DAC + op-amp achieves ±0.5 mA current accuracy; comparator response <100 ns ensures safe short-circuit shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital power control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F334K6T6 | Same core/peripherals but LQFP32 package, 32-pin count, reduced I/O (25 GPIO), no HRTIM fault inputs | Suitable only for single-phase or low-channel-count designs; lacks 5 fault inputs needed for full bridge protection | Select when board space is constrained and HRTIM fault handling is not required |
| STM32G474RET6 | Higher clock (170 MHz), 512 KB Flash, 128 KB SRAM, dual HRTIM, faster ADC (0.13 µs), but no integrated op-amp | Enables more complex control algorithms (e.g., predictive current control) but requires external op-amp for shunt sensing | Select for next-gen designs needing higher processing headroom and dual HRTIM synchronization |
Compared with STM32F334K6T6, the R6T6 offers full HRTIM fault protection and 64-pin routing flexibility; versus STM32G474RET6, it retains the integrated op-amp for compact current-sense front-ends but trades off raw compute throughput.
Availability
STM32F334R6T6 is available at Aetrix Electronics and suitable for AC/DC digital power supplies, three-phase motor gate drivers, resonant LLC converters, and programmable DC loads requiring stable component supply across extended production lifecycles.
Supply support for STM32F334R6T6 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-intensive real-time control applications-specifically engineered for digital power conversion, motor control, and sensor signal conditioning with integrated high-precision analog peripherals.
FAQ
What is the maximum operating temperature range for STM32F334R6T6?
The STM32F334R6T6 is qualified for industrial operation from –40 °C to +85 °C ambient temperature. Its thermal resistance (θJA = 40 °C/W) and internal temperature sensor allow real-time thermal monitoring and automatic derating in enclosed power enclosures without external thermal ICs.
Does STM32F334R6T6 support hardware CRC calculation?
Yes, it includes a dedicated cyclic redundancy check (CRC) calculation unit compliant with IEEE-802.3, enabling real-time integrity verification of Flash memory contents, communication packets, and configuration parameters-critical for functional safety compliance in IEC 61800-5-2 motor drives.
Can the op-amp in STM32F334R6T6 be used in transimpedance configuration?
Yes-the op-amp supports PGA mode with configurable non-inverting gain (2×, 4×, 8×, 16×) and full terminal access (VINP, VINN, VOUT). When combined with external feedback resistors and capacitors, it functions as a precision transimpedance amplifier for photodiode or optical current sensor interfaces.
How many independent clock sources does STM32F334R6T6 provide for system redundancy?
It provides four independent clock sources: 4–32 MHz HSE crystal oscillator, 32.768 kHz LSE for RTC, 8 MHz HSI RC (calibrated to ±1%), and 40 kHz LSI RC. This enables failover clock switching during oscillator faults-essential for uninterrupted operation in uninterruptible power supplies (UPS) and medical power systems.
STM32F334R6T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-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:
- 51
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 21x12b; D/A 3x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F334R6T6 FAQ
1.How can I place an order for STM32F334R6T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F334R6T6 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 STM32F334R6T6 reliable?
The price and inventory of STM32F334R6T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F334R6T6 is usually 5 days.
3.What payment methods are accepted for STM32F334R6T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F334R6T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F334R6T6?
STM32F334R6T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F334R6T6 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 STM32F334R6T6?
For technical support, including STM32F334R6T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F334R6T6 requirements.
6.How does Aetrix verify that STM32F334R6T6 is sourced from the original manufacturer or authorized distributors?
All STM32F334R6T6 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 STM32F334R6T6 meets industry standards.
7.What is the process for return or replacement of STM32F334R6T6?
All STM32F334R6T6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F334R6T6, 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 STM32F334R6T6 part is unused and in its original packaging.
Return procedure for STM32F334R6T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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