STM32F334R8T6 - 64KB Flash ARM Cortex-M4 MCU | STMicroelectronics
MPN: STM32F334R8T6 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.68 | $2,340.00 |
| 1,000 | $4.16 | $4,160.00 |
Drop-in alternatives for STM32F334R8T6 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
STM32F334R8T7
β Drop-Inπ Reference alternative (not in catalog)
STM32F334R6T6
β Drop-Inπ Reference alternative (not in catalog)
STM32F334R8T6TR
β Drop-Inπ Reference alternative (not in catalog)
STM32F303RCT6
β‘ Same Packageβ 99,999 In Stock
$5.44 / Unit
View Datasheet βSTM32F334R8T6 Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M4 with FPU |
| Maximum Clock Speed | 72 MHz |
| Flash Memory | 64 KB |
| SRAM | 12 KB |
| Package | LQFP64 (10x10 mm) |
| Supply Voltage | 2.0V to 3.6V |
| Operating Temperature | -40Β°C to +85Β°C |
| Number of I/O Pins | 51 |
| ADC | 3x 12-bit, up to 5 MSPS |
| DAC | 2x 12-bit |
| Comparators | 7 |
| High-Resolution Timer | 217 ps resolution |
| Communication Interfaces | CAN, USART, SPI, I2C, USB |
| DMA | Yes, 5 channels |
| RoHS Status | Compliant |
STM32F334R8T6 Pin Configuration
| Pin 1 | VBAT β Battery backup supply |
| Pin 2 | PC13 β GPIO / RTC output |
| Pin 3 | PC14 β GPIO / OSC32_IN |
| Pin 4 | PC15 β GPIO / OSC32_OUT |
| Pin 5 | PF0 β GPIO / OSC_IN |
| Pin 6 | PF1 β GPIO / OSC_OUT |
| Pin 7 | NRST β Reset (active low) |
| Pin 8 | VSSA β Analog ground |
| Pin 9 | VDDA β Analog power supply |
| Pin 10 | PA0 β GPIO / ADC_IN0 |
| Pin 11 | PA1 β GPIO / ADC_IN1 |
| Pin 12 | PA2 β GPIO / USART2_TX |
| Pin 13 | PA3 β GPIO / USART2_RX |
| Pin 14 | PA4 β GPIO / DAC_OUT1 |
| Pin 15 | PA5 β GPIO / DAC_OUT2 |
| Pin 16 | PA6 β GPIO / TIM3_CH1 |
| Pin 17 | PA7 β GPIO / TIM3_CH2 |
| Pin 18 | PA8 β GPIO / TIM1_CH1 |
| Pin 19 | PA9 β GPIO / USART1_TX |
| Pin 20 | PA10 β GPIO / USART1_RX |
| Pin 21 | PA11 β GPIO / USB_DM |
| Pin 22 | PA12 β GPIO / USB_DP |
| Pin 23 | PA13 β GPIO / SWDIO |
| Pin 24 | PA14 β GPIO / SWCLK |
| Pin 25 | PA15 β GPIO / JTDI |
| Pin 26 | PB0 β GPIO / ADC_IN8 |
| Pin 27 | PB1 β GPIO / ADC_IN9 |
| Pin 28 | PB2 β GPIO / BOOT1 |
| Pin 29 | PB3 β GPIO / JTDO |
| Pin 30 | PB4 β GPIO / NJTRST |
| Pin 31 | PB5 β GPIO / I2C1_SMBA |
| Pin 32 | PB6 β GPIO / I2C1_SCL |
| Pin 33 | PB7 β GPIO / I2C1_SDA |
| Pin 34 | PB8 β GPIO / CAN_RX |
| Pin 35 | PB9 β GPIO / CAN_TX |
| Pin 36 | PB10 β GPIO / I2C2_SCL |
| Pin 37 | PB11 β GPIO / I2C2_SDA |
| Pin 38 | PB12 β GPIO / SPI2_NSS |
| Pin 39 | PB13 β GPIO / SPI2_SCK |
| Pin 40 | PB14 β GPIO / SPI2_MISO |
| Pin 41 | PB15 β GPIO / SPI2_MOSI |
| Pin 42 | PC0 β GPIO / ADC_IN10 |
| Pin 43 | PC1 β GPIO / ADC_IN11 |
| Pin 44 | PC2 β GPIO / ADC_IN12 |
| Pin 45 | PC3 β GPIO / ADC_IN13 |
| Pin 46 | PC4 β GPIO / ADC_IN14 |
| Pin 47 | PC5 β GPIO / ADC_IN15 |
| Pin 48 | PC6 β GPIO / TIM3_CH1 |
| Pin 49 | PC7 β GPIO / TIM3_CH2 |
| Pin 50 | PC8 β GPIO / TIM3_CH3 |
| Pin 51 | PC9 β GPIO / TIM3_CH4 |
| Pin 52 | PC10 β GPIO / USART4_TX |
| Pin 53 | PC11 β GPIO / USART4_RX |
| Pin 54 | PC12 β GPIO / USART5_TX |
| Pin 55 | PD0 β GPIO / OSC_IN |
| Pin 56 | PD1 β GPIO / OSC_OUT |
| Pin 57 | PD2 β GPIO / TIM1_ETR |
| Pin 58 | VSS β Ground |
| Pin 59 | VDD β Power supply |
| Pin 60 | PD3 β GPIO / USART2_CTS |
| Pin 61 | PD4 β GPIO / USART2_RTS |
| Pin 62 | PD5 β GPIO / USART2_CK |
| Pin 63 | PD6 β GPIO / SPI3_MISO |
| Pin 64 | PD7 β GPIO / SPI3_MOSI |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
STM32F334R8T6 is suitable for 6 applications: Digital Power Supply, Three-Phase Motor Control, Solar Inverter, Industrial Automation, Consumer Electronics, Medical Devices.
Digital Power Supply
The STM32F334R8T6 is ideal for digital power supplies due to its high-resolution timer (217 ps) and fast ADCs. In a typical application, the HRTIM generates PWM signals for the power stage, while the ADC samples the output voltage and current for closed-loop control. The device's 72 MHz Cortex-M4 core executes control algorithms efficiently, enabling high-frequency switching with precise regulation. Compared to analog controllers, this MCU offers flexibility and programmability, allowing for adaptive control strategies and communication with a host system. The integrated comparators provide fast overcurrent protection, enhancing system reliability.
Recommended
Three-Phase Motor Control
The STM32F334R8T6 excels in three-phase motor control, particularly field-oriented control (FOC). The high-resolution timer generates precise PWM signals for the inverter, while the three ADCs simultaneously sample phase currents. The Cortex-M4 FPU accelerates the Clarke and Park transforms, reducing computational load. The device's seven comparators can be used for overcurrent detection and sensorless control. With a 72 MHz clock, the MCU can execute a complete FOC loop in under 10 microseconds, enabling smooth and efficient motor operation. This makes it suitable for applications ranging from industrial drives to electric vehicles.
Recommended
Solar Inverter
In solar inverters, the STM32F334R8T6 manages maximum power point tracking (MPPT) and DC-AC conversion. The HRTIM generates high-frequency PWM for the boost converter and inverter stages, while the ADCs monitor solar panel voltage and current. The device's fast processing enables real-time MPPT algorithms, maximizing energy harvest. The integrated comparators provide protection against overvoltage and overcurrent. With its wide operating temperature range and robust peripherals, the STM32F334R8T6 is well-suited for outdoor solar installations, ensuring reliable operation in varying environmental conditions.
Recommended
Industrial Automation
The STM32F334R8T6 is used in industrial automation for PLCs, robotics, and process control. Its rich set of communication interfaces (CAN, USART, SPI, I2C) allows seamless integration with industrial networks. The device's high-resolution timer and fast ADCs enable precise control of actuators and sensors. The 51 I/O pins provide ample connectivity for various sensors and actuators. The Cortex-M4 core with FPU handles complex control algorithms, while the low power consumption makes it suitable for energy-efficient designs. The device's robustness and long-term availability make it a reliable choice for industrial applications.
Recommended
Consumer Electronics
In consumer electronics, the STM32F334R8T6 is used in appliances, power tools, and smart home devices. Its compact LQFP64 package and low power consumption make it suitable for space-constrained designs. The device's USB interface enables easy connectivity for charging and data transfer. The high-resolution timer is useful for controlling brushless DC motors in appliances like fans and washing machines. The integrated DACs can generate audio signals for alerts or user feedback. With its cost-effectiveness and rich feature set, the STM32F334R8T6 is a popular choice for consumer products requiring advanced control.
Recommended
Medical Devices
The STM32F334R8T6 is used in medical devices such as infusion pumps, ventilators, and diagnostic equipment. Its high reliability and precise control capabilities are essential for patient safety. The device's fast ADCs and comparators enable accurate monitoring of vital signs. The Cortex-M4 core with FPU processes complex algorithms for signal filtering and analysis. The wide operating temperature range ensures reliable operation in clinical environments. The device's long-term availability and support make it a trusted choice for medical device manufacturers.
Recommended
Recommended Products Summary
Engineering reference data for STM32F334R8T6 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32F334R8T7 | STM32F334R6T6 | STM32F334R8T6TR | STM32F334C8T6 | STM32F303RCT6 |
|---|---|---|---|---|---|---|
| Package | LQFP64 | LQFP64 | LQFP64 | LQFP64 | LQFP48 | LQFP64 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU |
| Maximum Clock Speed | 72 MHz | 72 MHz | 72 MHz | 72 MHz | 72 MHz | 72 MHz |
| Flash Memory | 64 KB | 64 KB | 32 KB | 64 KB | 64 KB | 256 KB |
| SRAM | 12 KB | 12 KB | 12 KB | 12 KB | 12 KB | 40 KB |
| High-Resolution Timer | Yes (217 ps) | Yes (217 ps) | Yes (217 ps) | Yes (217 ps) | Yes (217 ps) | No |
| Operating Temperature | -40Β°C to +85Β°C | -40Β°C to +105Β°C | -40Β°C to +85Β°C | -40Β°C to +85Β°C | -40Β°C to +85Β°C | -40Β°C to +85Β°C |
Key Differentiators
- High-resolution timer with 217 ps resolution (vs STM32F303RCT6)
- Integrated comparators (7) (vs STM32F334R6T6)
- Wide operating temperature range option (vs STM32F334R8T6)
Design Notes
Decouple the VDD and VDDA pins with 100 nF ceramic capacitors placed as close to the pins as possible. Additionally, use a 4.7 uF tantalum or ceramic capacitor for bulk decoupling. For VDDA, a ferrite bead in series with the supply can reduce high-frequency noise, which is critical when using the ADC and DAC simultaneously.
Ensure a solid ground plane under the MCU to minimize noise and provide a low-impedance return path. For the high-resolution timer and ADC, keep analog and digital grounds separate and connect them at a single point. Place the crystal oscillator (if used) close to the OSC_IN/OSC_OUT pins with proper load capacitors.
Do not exceed the absolute maximum ratings for VDD (3.6V) and VDDA (3.6V). Ensure the BOOT0 pin is correctly configured to select the desired boot mode. When using the HRTIM, verify that the clock source is stable and free of jitter, as this directly affects PWM resolution. Also, avoid floating unused I/O pins by configuring them as outputs or enabling internal pull-ups/pull-downs.
Compliance Information
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified; for automotive, consider STM32F334R8T7 or other automotive-grade variants.
