STM32F334R8T6 - 64KB Flash ARM Cortex-M4 MCU | STMicroelectronics
料号： STM32F334R8T6 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 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 |
STM32F334R8T6 概述
A microcontroller (MCU) is a compact integrated circuit designed to govern a specific operation in an embedded system. It contains a processor core, memory, and programmable input/output peripherals. The STM32F334R8T6 belongs to the STM32F3 family, which is optimized for mixed-signal processing and control applications. Within the hierarchy, it is a microcontroller -> ARM Cortex-M4 -> STM32F3 series -> STM32F334 line, positioning it as a high-performance yet cost-effective solution for real-time control.
Key features include a 72 MHz ARM Cortex-M4 core with FPU, 64 KB flash, 12 KB SRAM, and a rich set of peripherals: three 12-bit ADCs (up to 5 MSPS), two 12-bit DACs, seven comparators, and advanced timers including a high-resolution timer (HRTIM) with 217 ps resolution. The device also supports a CAN controller, USART, SPI, I2C, and USB. These features make it ideal for digital power conversion, motor control, and industrial automation.
Technically, the STM32F334R8T6 leverages the ARM Cortex-M4 architecture with DSP instructions and a single-precision FPU, enabling efficient execution of complex control algorithms. The HRTIM is a standout feature, providing high-resolution PWM generation essential for switch-mode power supplies and motor drives. The device operates from 2.0V to 3.6V and supports a temperature range of -40°C to +85°C, ensuring robust performance in harsh environments.
Typical applications include digital power supplies, three-phase motor control, solar inverters, and industrial automation. The combination of high-resolution timers, fast ADCs, and comparators allows for precise, real-time control loops. For instance, in a digital power supply, the HRTIM generates PWM signals with nanosecond-level accuracy, while the fast ADC samples the output voltage for closed-loop regulation.
When designing with this MCU, ensure proper decoupling of the power supply pins and a clean ground plane to minimize noise, especially when using the high-resolution timer and ADC simultaneously. The device supports SWD and JTAG debugging, facilitating development. Consider using the STM32CubeF3 software package for rapid prototyping and code generation.
直接替换替代料： STM32F334R8T6 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
STM32F334R8T7
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32F334R6T6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32F334R8T6TR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32F303RCT6
⚡ 相同封装 ⚠️ 规格未核验✓ 有现货
$5.2 / 个
查看数据手册 →STM32F334R8T6 最大额定值与电气特性
| Core | ARM Cortex-M4 with FPU |
| Maximum Clock Speed | 72 MHz |
| Flash Memory | 64 KB |
| SRAM | 12 KB |
| 封装 | LQFP64 (10x10 mm) |
| 电源电压 | 2.0V to 3.6V |
| 工作温度 | -40°C to +85°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 状态 | Compliant |
STM32F334R8T6 引脚配置
| 引脚 1 | VBAT — Battery backup supply |
| 引脚 2 | PC13 — GPIO / RTC output |
| 引脚 3 | PC14 — GPIO / OSC32_IN |
| 引脚 4 | PC15 — GPIO / OSC32_OUT |
| 引脚 5 | PF0 — GPIO / OSC_IN |
| 引脚 6 | PF1 — GPIO / OSC_OUT |
| 引脚 7 | NRST — Reset (active low) |
| 引脚 8 | VSSA — Analog ground |
| 引脚 9 | VDDA — Analog power supply |
| 引脚 10 | PA0 — GPIO / ADC_IN0 |
| 引脚 11 | PA1 — GPIO / ADC_IN1 |
| 引脚 12 | PA2 — GPIO / USART2_TX |
| 引脚 13 | PA3 — GPIO / USART2_RX |
| 引脚 14 | PA4 — GPIO / DAC_OUT1 |
| 引脚 15 | PA5 — GPIO / DAC_OUT2 |
| 引脚 16 | PA6 — GPIO / TIM3_CH1 |
| 引脚 17 | PA7 — GPIO / TIM3_CH2 |
| 引脚 18 | PA8 — GPIO / TIM1_CH1 |
| 引脚 19 | PA9 — GPIO / USART1_TX |
| 引脚 20 | PA10 — GPIO / USART1_RX |
| 引脚 21 | PA11 — GPIO / USB_DM |
| 引脚 22 | PA12 — GPIO / USB_DP |
| 引脚 23 | PA13 — GPIO / SWDIO |
| 引脚 24 | PA14 — GPIO / SWCLK |
| 引脚 25 | PA15 — GPIO / JTDI |
| 引脚 26 | PB0 — GPIO / ADC_IN8 |
| 引脚 27 | PB1 — GPIO / ADC_IN9 |
| 引脚 28 | PB2 — GPIO / BOOT1 |
| 引脚 29 | PB3 — GPIO / JTDO |
| 引脚 30 | PB4 — GPIO / NJTRST |
| 引脚 31 | PB5 — GPIO / I2C1_SMBA |
| 引脚 32 | PB6 — GPIO / I2C1_SCL |
| 引脚 33 | PB7 — GPIO / I2C1_SDA |
| 引脚 34 | PB8 — GPIO / CAN_RX |
| 引脚 35 | PB9 — GPIO / CAN_TX |
| 引脚 36 | PB10 — GPIO / I2C2_SCL |
| 引脚 37 | PB11 — GPIO / I2C2_SDA |
| 引脚 38 | PB12 — GPIO / SPI2_NSS |
| 引脚 39 | PB13 — GPIO / SPI2_SCK |
| 引脚 40 | PB14 — GPIO / SPI2_MISO |
| 引脚 41 | PB15 — GPIO / SPI2_MOSI |
| 引脚 42 | PC0 — GPIO / ADC_IN10 |
| 引脚 43 | PC1 — GPIO / ADC_IN11 |
| 引脚 44 | PC2 — GPIO / ADC_IN12 |
| 引脚 45 | PC3 — GPIO / ADC_IN13 |
| 引脚 46 | PC4 — GPIO / ADC_IN14 |
| 引脚 47 | PC5 — GPIO / ADC_IN15 |
| 引脚 48 | PC6 — GPIO / TIM3_CH1 |
| 引脚 49 | PC7 — GPIO / TIM3_CH2 |
| 引脚 50 | PC8 — GPIO / TIM3_CH3 |
| 引脚 51 | PC9 — GPIO / TIM3_CH4 |
| 引脚 52 | PC10 — GPIO / USART4_TX |
| 引脚 53 | PC11 — GPIO / USART4_RX |
| 引脚 54 | PC12 — GPIO / USART5_TX |
| 引脚 55 | PD0 — GPIO / OSC_IN |
| 引脚 56 | PD1 — GPIO / OSC_OUT |
| 引脚 57 | PD2 — GPIO / TIM1_ETR |
| 引脚 58 | VSS — Ground |
| 引脚 59 | VDD — Power supply |
| 引脚 60 | PD3 — GPIO / USART2_CTS |
| 引脚 61 | PD4 — GPIO / USART2_RTS |
| 引脚 62 | PD5 — GPIO / USART2_CK |
| 引脚 63 | PD6 — GPIO / SPI3_MISO |
| 引脚 64 | PD7 — GPIO / SPI3_MOSI |
典型应用
STM32F334R8T6 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： STM32F334R8T6 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 | -40°C to +85°C | -40°C to +105°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C |
关键差异点
- High-resolution timer with 217 ps resolution （对比 STM32F303RCT6)
- Integrated comparators (7) （对比 STM32F334R6T6)
- Wide operating temperature range option （对比 STM32F334R8T6)
设计说明
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.
合规信息
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified; for automotive, consider STM32F334R8T7 or other automotive-grade variants.
