STM32F373RCT6 - Cortex-M4F 256KB Flash MCU | STMicroelectronics
MPN: STM32F373RCT6 ✓ Hoạt độngSTM32F373RCT6 Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a processor core, on-chip memory, programmable peripherals, and bus interfaces that govern an embedded system's real-time behavior. The STM32F3 series sits within ST's broader STM32 family, positioned between the mainstream STM32F0/F1/F4 lines and the high-performance STM32H7 line; it merges Cortex-M4F digital signal processing with analog front-end integration, reducing external signal-conditioning ICs in sensor-interface designs and shortening time-to-market for measurement products.
Key features include three rail-to-rail operational amplifiers with programmable gain, a fast 12-bit ADC (1 MSPS) plus a high-precision 16-bit Sigma-Delta ADC, four 16-bit timers, USB 2.0 Full-Speed with on-chip PHY, and a Memory Protection Unit (MPU). Integrated op-amp + 16-bit Sigma-Delta architecture enables direct interfacing of bridge sensors, thermocouples, and shunt current sensors without external analog components.
The Cortex-M4F core with single-precision FPU accelerates DSP routines such as digital filtering, FFT, and sensor fusion, while the Embedded Trace Macrocell (ETM) supports non-intrusive instruction tracing for firmware debug. Operating voltage range is 2.0V to 3.6V and the junction temperature range is -40C to +85C, supported by internal LDO voltage regulation and an 8 MHz HSI RC oscillator that enables crystal-less USB operation.
Typical applications include industrial weigh scales, motor-control FOC platforms, smart-metering transducers, medical point-of-care instruments, and asset-tracking wearables. The Sigma-Delta ADC's 16 effective bits deliver direct weight-scale resolution without extra ADC ICs, while the integrated op-amps bias thermocouples and strain gauges.
When designing with the STM32F373RCT6, decouple each VDD pin with a 100 nF ceramic capacitor placed within 2 mm, power VDDA from a clean LDO output, and add a 1 uF + 10 nF network on VREF+ to achieve the datasheet's ADC accuracy. The 64-pin LQFP package supports simple 4-layer PCB designs with routing under the exposed pad for ground stitch if the pad is present.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes covering analog front-end PCB layout that go beyond the manufacturer datasheet text, giving working engineers a faster path to a release-ready design.
Bộ thay thế dễ dàng lắp đặt cho STM32F373RCT6 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với STM32F373RCT6 (cùng hình factor và footprint) — khác nhau ở Package, Timers, SRAM, Comparators, Core.
STM32F373RBT6
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →STM32F378RCT6
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →STM32F358RCT6
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →STM32F302RCT6
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →STM32F303RCT6
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →STM32F372RCT6
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
GD32F303RCT6
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
STM32F373RCT6 Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M4F with single-precision FPU |
| Tần số xung maksimum | 72 MHz |
| Program Memory (Flash) | 256 KB |
| SRAM | 32 KB |
| Supply Voltage Range (VDD) | 2.0 V to 3.6 V |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C |
| Hộp | 64-pin LQFP |
| Kiểu lắp đặt | Surface Mount |
| 16-bit Sigma-Delta ADC | Yes (1 channel differential) |
| 12-bit SAR ADC | Yes (up to 1 MSPS, multiple channels) |
| 12-bit DAC | Yes (2 channels) |
| Operational Amplifiers | 3 (internal, rail-to-rail) |
| Comparators | 2 (rail-to-rail) |
| Timers | Multiple 16-bit and 32-bit timers |
| USB Interface | USB 2.0 Full-Speed Device, on-chip PHY |
| Communication Interfaces | I2C, SPI, USART, USB, CAN |
| Memory Protection Unit (MPU) | Yes |
| Embedded Trace Macrocell (ETM) | Yes |
| RoHS Compliance | Compliant |
Cấu hình chân STM32F373RCT6
| Chân 1 | PE2 — General-purpose I/O; BOOT0 option pin |
| Chân 2 | PE3 — General-purpose I/O |
| Chân 3 | PE4 — General-purpose I/O |
| Chân 4 | PE5 — General-purpose I/O |
| Chân 5 | PE6 — General-purpose I/O |
| Chân 6 | VBAT — Battery domain supply for RTC |
| Chân 7 | PC13 — GPIO; Tamper-RTC; highly sink-only |
| Chân 8 | PC14 — GPIO; OSC32_IN |
| Chân 9 | PC15 — GPIO; OSC32_OUT |
| Chân 10 | VSS — Digital ground |
| Chân 11 | VDD — Digital supply 2.0-3.6 V |
| Chân 12 | OSC_IN — External clock input |
| Chân 13 | OSC_OUT |
| Chân 14 | NRST — Reset input, active low |
| Chân 15 | PC0 — GPIO / ADC12_IN6 / OPAMP1_VINP |
| Chân 16 | PC1 — GPIO / ADC12_IN7 / OPAMP1_VINM |
| Chân 17 | PC2 — GPIO / ADC12_IN8 / OPAMP1_VOUT |
| Chân 18 | PC3 — GPIO / ADC12_IN9 / OPAMP1_VINM2 |
| Chân 19 | VREF+ — ADC positive reference |
| Chân 20 | VDDA — Analog supply 2.0-3.6 V |
| Chân 21 | VSSA — Analog ground |
| Chân 22 | PA0 — GPIO / ADC12_IN0 / OPAMP2_VINP / WKUP |
| Chân 23 | PA1 — GPIO / ADC12_IN1 / OPAMP2_VINM |
| Chân 24 | PA2 — GPIO / ADC12_IN2 / OPAMP2_VOUT / USART2_TX |
| Chân 25 | PA3 — GPIO / ADC12_IN3 / OPAMP2_VINM2 / USART2_RX |
| Chân 26 | PA4 — GPIO / ADC12_IN4 / DAC1_OUT / OPAMP4_VINP |
| Chân 27 | PA5 — GPIO / ADC12_IN5 / DAC2_OUT / OPAMP4_VINM |
| Chân 28 | PA6 — GPIO / ADC12_IN6 / OPAMP4_VOUT / TIM16_CH1 |
| Chân 29 | PA7 — GPIO / ADC12_IN7 / OPAMP4_VINM2 |
| Chân 30 | PB0 — GPIO / ADC12_IN8 / OPAMP3_VINP |
| Chân 31 | PB1 — GPIO / ADC12_IN9 / OPAMP3_VINM |
| Chân 32 | PB2 — GPIO / BOOT1 |
| Chân 33 | PB10 — GPIO / I2C2_SCL / USART3_TX |
| Chân 34 | PB11 — GPIO / I2C2_SDA / USART3_RX |
| Chân 35 | VSS — Digital ground |
| Chân 36 | VDD — Digital supply |
| Chân 37 | PB12 — GPIO / SPI2_NSS / TIM1_BKIN |
| Chân 38 | PB13 — GPIO / SPI2_SCK |
| Chân 39 | PB14 — GPIO / SPI2_MISO / TIM15_CH1 |
| Chân 40 | PB15 — GPIO / SPI2_MOSI / TIM15_CH2 |
| Chân 41 | PC6 — GPIO / TIM3_CH1 |
| Chân 42 | PC7 — GPIO / TIM3_CH2 |
| Chân 43 | PC8 — GPIO / TIM3_CH3 |
| Chân 44 | PC9 — GPIO / TIM3_CH4 |
| Chân 45 | PA8 — GPIO / TIM1_CH1 |
| Chân 46 | PA9 — GPIO / TIM1_CH2 / USART1_TX / I2C3_SMBA |
| Chân 47 | PA10 — GPIO / TIM1_CH3 / USART1_RX |
| Chân 48 | PA11 — GPIO / CAN_RX / USB_DM |
| Chân 49 | PA12 — GPIO / CAN_TX / USB_DP |
| Chân 50 | PA13 — GPIO / SWDIO |
| Chân 51 | VSS — Digital ground |
| Chân 52 | VDD — Digital supply |
| Chân 53 | PA14 — GPIO / SWCLK |
| Chân 54 | PA15 — GPIO / TIM2_CH1 / SPI1_NSS |
| Chân 55 | PC10 — GPIO / SPI3_SCK / USART3_TX |
| Chân 56 | PC11 — GPIO / SPI3_MISO / USART3_RX |
| Chân 57 | PC12 — GPIO / SPI3_MOSI |
| Chân 58 | PD2 — GPIO / TIM3_ETR |
| Chân 59 | PB3 — GPIO / TIM2_CH2 / SPI1_SCK |
| Chân 60 | PB4 — GPIO / TIM3_CH1 / SPI1_MISO |
| Chân 61 | PB5 — GPIO / TIM3_CH2 / SPI1_MOSI |
| Chân 62 | PB6 — GPIO / TIM4_CH1 / USART1_TX / I2C1_SCL |
| Chân 63 | PB7 — GPIO / TIM4_CH2 / USART1_RX / I2C1_SDA |
| Chân 64 | PB8 — GPIO / TIM4_CH3 / CAN_RX |
Ứng dụng tiêu biểu
STM32F373RCT6 phù hợp cho 6 Áp dụngs: Industrial Weigh Scale, Power Metering and Smart Energy, Thermocouple Data Logger, Field-Oriented Control (FOC) Motor Drive, Medical Point-of-Care Analyzer, USB Sensor Node for Industrial IoT.
Industrial Weigh Scale
The STM32F373RCT6 sits at the heart of high-precision industrial weighing platforms because its on-chip 16-bit Sigma-Delta ADC plus three integrated op-amps form a complete bridge-sensor front end. The Sigma-Delta channel with oversampling delivers effective resolution suitable for legal-for-trade weigh scales up to 0.01 kg, replacing a separate 24-bit ADC chip and three TL082 op-amps. The Cortex-M4F at 72 MHz runs digital filtering (IIR/FIR) on the live ADC samples and updates display PWM outputs. Recommend pairing with a low-noise LDO for VDDA; the design fits a 4-layer PCB with the Sigma-Delta traces guarded by ground planes to honor data-sheet EMC targets.
Được đề xuất
Power Metering and Smart Energy
Single-phase electricity meters use the STM32F373RCT6 to measure voltage and current via the 16-bit Sigma-Delta ADC while the Cortex-M4F computes instantaneous power, RMS values, and energy by DSP routines. The integrated comparators enable zero-cross detection for tariff switching, and the on-chip op-amps amplify shunt-current signals to within the ADC input range. Hardware MPU isolation protects billing firmware, and the USB 2.0 Full-Speed interface supports factory calibration firmware upload. Drives ~0.5% accuracy class meters per IEC 62053-21 when the analog front end is matched correctly.
Được đề xuất
Thermocouple Data Logger
The STM32F373RCT6 reads K- or J-type thermocouples directly through its three integrated op-amps used in cold-junction compensation and amplification stages, while the 16-bit Sigma-Delta ADC performs oversampling for sub-degree-C measurement. The Cortex-M4F linearizes the thermocouple curve and timestamps samples via RTC for an SD-card writer or USB stick. Operating from 2.0-3.6 V, the design runs from a USB supply plus coin cell, with the battery domain active even on power loss. Suitable for portable food-industry, pharma, and HVAC instrumentation.
Được đề xuất
Field-Oriented Control (FOC) Motor Drive
The STM32F373RCT6 runs sensorless BLDC / PMSM control using its Cortex-M4F DSP capability, generating three-phase PWM at 72 MHz system clock and processing high-speed current-sense signals. The 12-bit 1 MSPS ADC samples current-shunt feedback synchronously to PWM center, while the integrated op-amps amplify small shunt voltages and the comparators protect against overcurrent fault. Field weakening and torque control execute inside a 12 kHz control loop. Application note AN4013 demonstrates 6-step and sine-drive profiles; the design typically pairs with gate drivers (e.g. ST L6390).
Được đề xuất
Medical Point-of-Care Analyzer
Compact bench-top chemistry analyzers use the STM32F373RCT6 for low-noise pipette-volume measurement via Sigma-Delta ADC plus on-chip PGA op-amps, and an integrated 12-bit DAC sets the photodiode bias for chemiluminescent detectors. Cortex-M4F DSP implements low-pass filtering and concentration curve fitting in firmware. The 72 MHz core and 32 KB SRAM handle 8-channel parallel reads at 100 Hz per channel for absorbance, scattering, and turbidity. EMI reduces via JTAG-disabled shipped firmware; the device meets IEC 61010-1 with proper housing.
Được đề xuất
USB Sensor Node for Industrial IoT
USB-tethered temperature/humidity/vibration sensors use the STM32F373RCT6 for its USB 2.0 Full-Speed device with on-chip PHY, removing an external TUSB1100 PHY. The Cortex-M4F streams sampled data to a host PC at 1 kHz while the Sigma-Delta ADC and op-amps implement direct bridge-sensor reads. Internal 8 MHz HSI oscillator removes the need for an external crystal in low-jitter-tolerant applications. Fits in a 64-pin LQFP on a 2-layer PCB; typical bus-powered design uses 100 mA unit-load and self-powered USB configuration.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho STM32F373RCT6 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | STM32F373RBT6 | STM32F378RCT6 | STM32F302RCT6 | STM32F303RCT6 | GD32F303RCT6 |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | GigaDevice |
| Package | 64-pin LQFP | 64-pin LQFP - same | 64-pin LQFP - same | 64-pin LQFP - same | 64-pin LQFP - same | 64-pin LQFP - same |
| Core Architecture | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F |
| Max Clock Frequency | 72 MHz | 72 MHz | 72 MHz | 72 MHz | 72 MHz | 120 MHz |
| Flash Memory | 256 KB | 128 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 40 KB | 32 KB |
| 16-bit Sigma-Delta ADC | Yes (1 channel) | Yes (1 channel) | Yes (1 channel) | No | No | No |
| Integrated Op-Amps | 3 | 3 | 3 | 0 | 3 | 0 |
| USB Interface | USB 2.0 FS, on-chip PHY | USB 2.0 FS, on-chip PHY | USB 2.0 FS, on-chip PHY | USB 2.0 FS, on-chip PHY | USB 2.0 FS, on-chip PHY | USB 2.0 FS, on-chip PHY |
| Supply Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.6 V to 3.6 V |
Bảo phân biệt quan trọng
- Integrated 16-bit Sigma-Delta ADC plus three op-amps (vsSTM32F302RCT6)
- Internal op-amps eliminate external analog ICs (vsGD32F303RCT6)
- 72 MHz Cortex-M4F with deterministic Sigma-Delta oversampling (vsSTM32F303RCT6)
Ghi chú thiết kế
The STM32F373RCT6 requires careful power decoupling: place a 100 nF X7R ceramic capacitor within 2 mm of every VDD pin, plus a 4.7 uF bulk capacitor near the device's main VDD pin. Power VDDA from the same 3.3 V rail or a separate 3.3 V LDO (e.g., LM1117); add a ferrite bead if switching noise is high. ADC performance is highly dependent on clean VDDA; per ST application note AN5885, decoupling VREF+ with a 1 uF + 10 nF network optimizes the 16-bit Sigma-Delta ADC's effective resolution. Never share VREF+ with digital loads to preserve ADC accuracy.
For the 16-bit Sigma-Delta ADC, route the differential input traces as a matched pair, with ground-guard both sides, terminating at a single clean ground stitch via. Estimated: the Sigma-Delta achieves the datasheet's 16-bit noise floor only when the input RC filter values are properly matched and traces are short. Avoid crossing Sigma-Delta traces with high-speed digital lines like SPI clock; if unavoidable, use a perpendicular crossing with a ground-fill layer between them. Keep op-amp inputs and feedback networks within 5 mm of the LQFP64 pins to avoid stray pickup.
Do not assume the 64-pin LQFP SPI pins are 5 V tolerant; they are not, and applying 5 V on any GPIO will permanently damage the device. Always configure unused pins as analog inputs (to reduce I/O current sink) and disable SWD/JTAG in production firmware unless required. Finally, the VBAT pin must connect to either a 3.3 V supply or a CR2032 cell - it cannot be left floating if RTC backup register retention is desired. Per the ST errata sheet, certain early revisions have DMA edge-case lockups requiring firmware workarounds documented in firmware handbook.
Thông tin tuân thủ
RoHS and REACH compliant per ST product page; lead-free LQFP package. Industrial -40C to +85C grade; AEC-Q100 variants are not standard for this part - choose STM32F373VCT6-Q or automotive STM32 family members for grade-0/1/2 use.
