STMicroelectronics

STM32F373RCT6 - ARM Cortex-M4 256KB Flash MCU | STMicroelectronics

Name: STM32F373RCT6
Brand: STMicroelectronics
Price: 8.50 USD
Availability: InStock

MPN: STM32F373RCT6 ✓ Active

In Stock (99,999) Ships in 1-3 business days

2.0 V to 3.6 V Vdss LQFP-64 Package 72 MHz Speed 256 KB Memory

$8.5 USD / Unit

MOQ: 1 |

Volume Pricing

Qty	Unit Price	Extended
1	$8.5	$8.50
10	$7.65	$76.50
100	$6.8	$680.00
500	$6.12	$3,060.00
1,000	$5.44	$5,440.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for STM32F373RCT6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

STM32F373RCT7

✅ Drop-In

📦 LQFP-64

Extended temperature range (-40°C to +105°C) vs -40°C to +85°C

📋 Reference alternative (not in catalog)

STM32F373RBT6

✅ Drop-In

📦 LQFP-64

128 KB Flash instead of 256 KB

📋 Reference alternative (not in catalog)

STM32F373R8T6

✅ Drop-In

📦 LQFP-64

64 KB Flash instead of 256 KB

📋 Reference alternative (not in catalog)

STM32F303RCT6

✅ Drop-In

STMicroelectronics

📦 LQFP-64

ARM Cortex-M4 with FPU · 72 MHz · 256 KB · 40 KB · 2.0 V to 3.6 V · LQFP-64 · -40C to +85C · 51

✓ 99,999 In Stock

$5.44 / Unit

View Datasheet →

STM32F303RBT6

✅ Drop-In

📦 LQFP-64

128 KB Flash, 12-bit ADC, no op-amps

📋 Reference alternative (not in catalog)

ATSAMD51J19A

✅ Drop-In

📦 LQFP-64

Cortex-M4F at 120 MHz, 512 KB Flash, 12-bit ADC

📋 Reference alternative (not in catalog)

ℹ️ 1 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

STM32F373RCT6 Maximum Ratings & Electrical Characteristics

Core	ARM Cortex-M4 with FPU
Maximum Clock Frequency	72 MHz
Flash Memory	256 KB
SRAM	32 KB
Supply Voltage Range	2.0 V to 3.6 V
Operating Temperature Range	-40°C to +85°C
Package	LQFP-64
ADC Resolution	16-bit (with oversampling)
DAC Resolution	12-bit
Number of Operational Amplifiers	3
Number of Comparators	2
Communication Interfaces	I2C, SPI, USART, CAN, USB
GPIO Pins	51
DMA Channels	12
RoHS Status	Compliant

STM32F373RCT6 Pin Configuration

Pin 1	VBAT — Backup battery supply
Pin 2	PC13 — GPIO / RTC output
Pin 3	PC14 — GPIO / OSC32_IN
Pin 4	PC15 — GPIO / OSC32_OUT
Pin 5	PF0 — GPIO / OSC_IN
Pin 6	PF1 — GPIO / OSC_OUT
Pin 7	NRST — Reset (active low)
Pin 8	VDD — Digital power supply
Pin 9	VSS — Ground
Pin 10	VDDA — Analog power supply
Pin 11	VREF+ — ADC reference voltage
Pin 12	VREF- — ADC reference ground
Pin 13	PA0 — GPIO / ADC_IN0
Pin 14	PA1 — GPIO / ADC_IN1
Pin 15	PA2 — GPIO / USART2_TX
Pin 16	PA3 — GPIO / USART2_RX
Pin 17	PA4 — GPIO / DAC_OUT1
Pin 18	PA5 — GPIO / DAC_OUT2
Pin 19	PA6 — GPIO / SPI1_MISO
Pin 20	PA7 — GPIO / SPI1_MOSI
Pin 21	PB0 — GPIO / ADC_IN8
Pin 22	PB1 — GPIO / ADC_IN9
Pin 23	PB2 — GPIO / BOOT1
Pin 24	PB10 — GPIO / I2C2_SCL
Pin 25	PB11 — GPIO / I2C2_SDA
Pin 26	PB12 — GPIO / SPI2_NSS
Pin 27	PB13 — GPIO / SPI2_SCK
Pin 28	PB14 — GPIO / SPI2_MISO
Pin 29	PB15 — GPIO / SPI2_MOSI
Pin 30	PC0 — GPIO / ADC_IN10
Pin 31	PC1 — GPIO / ADC_IN11
Pin 32	PC2 — GPIO / ADC_IN12
Pin 33	PC3 — GPIO / ADC_IN13
Pin 34	PC4 — GPIO / ADC_IN14
Pin 35	PC5 — GPIO / ADC_IN15
Pin 36	PB3 — GPIO / SPI1_SCK
Pin 37	PB4 — GPIO / SPI1_NSS
Pin 38	PB5 — GPIO / I2C1_SMBA
Pin 39	PB6 — GPIO / I2C1_SCL
Pin 40	PB7 — GPIO / I2C1_SDA
Pin 41	BOOT0 — Boot mode selection
Pin 42	PB8 — GPIO / CAN_RX
Pin 43	PB9 — GPIO / CAN_TX
Pin 44	VDD — Digital power supply
Pin 45	VSS — Ground
Pin 46	PA8 — GPIO / MCO1
Pin 47	PA9 — GPIO / USART1_TX
Pin 48	PA10 — GPIO / USART1_RX
Pin 49	PA11 — GPIO / USB_DM
Pin 50	PA12 — GPIO / USB_DP
Pin 51	PA13 — GPIO / SWDIO
Pin 52	PA14 — GPIO / SWCLK
Pin 53	PA15 — GPIO / JTDI
Pin 54	PB3 — GPIO / JTDO
Pin 55	PB4 — GPIO / NJTRST
Pin 56	PB5 — GPIO / PVD_IN
Pin 57	PB6 — GPIO / I2C1_SCL
Pin 58	PB7 — GPIO / I2C1_SDA
Pin 59	PC6 — GPIO / TIM3_CH1
Pin 60	PC7 — GPIO / TIM3_CH2
Pin 61	PC8 — GPIO / TIM3_CH3
Pin 62	PC9 — GPIO / TIM3_CH4
Pin 63	VDD — Digital power supply
Pin 64	VSS — Ground

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

STM32F373RCT6 is suitable for 6 applications: Industrial Control Systems, Motor Drives, Medical Devices, Consumer Electronics, Power Management, IoT and Smart Home.

🏭

Industrial Control Systems

The STM32F373RCT6 is ideal for industrial control systems due to its high-resolution 16-bit ADC and multiple communication interfaces. It can interface with sensors, actuators, and PLCs, providing precise analog measurement and robust control. The Cortex-M4 core with FPU accelerates control algorithms, while the op-amps and comparators enable signal conditioning. In a typical setup, the MCU reads analog sensor data, processes it, and drives actuators via PWM or CAN. The wide supply voltage range and industrial temperature rating ensure reliable operation in factory environments. Compared to 8-bit MCUs, the STM32F373RCT6 offers superior processing power and analog integration, reducing external component count and system cost.

Recommended

L6205 (Motor driver for actuator control) TJA1050 (CAN transceiver for industrial networking)

⚡

Motor Drives

The STM32F373RCT6 excels in motor drive applications, particularly for field-oriented control (FOC) of brushless DC motors. Its 16-bit ADC provides high-resolution current sensing, while the advanced timers generate precise PWM signals. The integrated op-amps can condition current shunt signals, eliminating external amplifiers. The Cortex-M4 FPU accelerates the complex mathematical computations required for FOC. In a typical motor drive, the MCU samples phase currents, estimates rotor position, and updates PWM duty cycles in real-time. The device's robust timer architecture ensures minimal jitter, improving motor efficiency and reducing acoustic noise. Compared to dedicated motor control ICs, the STM32F373RCT6 offers flexibility and programmability, allowing customization of control algorithms.

Recommended

L6234 (Three-phase motor driver) IR2104 (Gate driver for MOSFETs)

💊

Medical Devices

The STM32F373RCT6 is suitable for medical devices such as patient monitors and diagnostic equipment due to its high-precision analog peripherals and low power consumption. The 16-bit ADC enables accurate measurement of physiological signals like ECG and temperature. The device's small LQFP-64 package allows compact designs, and its wide supply voltage range accommodates battery-powered operation. In a typical medical device, the MCU acquires analog signals, processes them with digital filters, and communicates results via USB or UART. The integrated op-amps can amplify weak sensor signals, reducing external components. The device's reliability and long-term availability make it a trusted choice for medical applications, where safety and accuracy are paramount.

Recommended

AD8232 (ECG front-end for signal conditioning) MCP4725 (DAC for analog output)

📱

Consumer Electronics

The STM32F373RCT6 is used in consumer electronics such as smart home devices, wearables, and audio equipment. Its rich peripheral set, including USB, I2C, and SPI, enables connectivity with displays, sensors, and wireless modules. The Cortex-M4 core with FPU supports audio processing and user interface tasks. In a smart home hub, the MCU manages multiple sensors, controls actuators, and communicates with a central server via Wi-Fi or Ethernet. The device's low power modes extend battery life in portable devices. The integrated DAC and op-amps can generate audio signals or drive small speakers. Compared to general-purpose MCUs, the STM32F373RCT6 offers a balance of performance and analog integration, making it a versatile choice for consumer products.

Recommended

ESP8266 (Wi-Fi module for IoT connectivity) SSD1306 (OLED display driver)

⚡

Power Management

The STM32F373RCT6 is well-suited for power management applications, such as digital power supplies and battery management systems. Its high-resolution ADC monitors voltage and current accurately, while the PWM timers control power converters. The integrated comparators can detect overcurrent conditions quickly, enabling fast protection. In a digital power supply, the MCU implements control loops in software, adjusting duty cycles to maintain output regulation. The device's communication interfaces allow remote monitoring and configuration. The wide supply voltage range and robust design ensure reliable operation in power electronics. Compared to analog controllers, the STM32F373RCT6 offers flexibility and programmability, enabling adaptive control algorithms and improved efficiency.

Recommended

IR2110 (Gate driver for half-bridge converters) TL431 (Precision voltage reference)

🧩

IoT and Smart Home

The STM32F373RCT6 is a strong candidate for IoT and smart home applications, where it serves as the central controller for sensors, actuators, and connectivity modules. Its low power consumption and multiple low-power modes enable battery-powered operation. The device's rich analog peripherals allow direct interfacing with environmental sensors, such as temperature, humidity, and light sensors. In a typical smart home node, the MCU reads sensor data, processes it, and sends it to a cloud server via Wi-Fi or BLE. The integrated USB interface simplifies firmware updates and debugging. The device's security features, including a unique ID and CRC unit, enhance system integrity. Compared to simpler MCUs, the STM32F373RCT6 provides the performance and connectivity needed for complex IoT applications.

Recommended

ESP32 (Wi-Fi/BLE module for connectivity) SHT30 (Temperature and humidity sensor)

Recommended Products Summary

L6205 Motor driver for actuator control Used in: Industrial Control Systems TJA1050 CAN transceiver for industrial networking Used in: Industrial Control Systems L6234 Three-phase motor driver Used in: Motor Drives IR2104 Gate driver for MOSFETs Used in: Motor Drives AD8232 ECG front-end for signal conditioning Used in: Medical Devices MCP4725 DAC for analog output Used in: Medical Devices ESP8266 Wi-Fi module for IoT connectivity Used in: Consumer Electronics SSD1306 OLED display driver Used in: Consumer Electronics IR2110 Gate driver for half-bridge converters Used in: Power Management TL431 Precision voltage reference Used in: Power Management ESP32 Wi-Fi/BLE module for connectivity Used in: IoT and Smart Home SHT30 Temperature and humidity sensor Used in: IoT and Smart Home

What is the maximum clock frequency of STM32F373RCT6?

The STM32F373RCT6 operates at a maximum clock frequency of 72 MHz. According to the STMicroelectronics datasheet, the ARM Cortex-M4 core with FPU can run at up to 72 MHz, providing high computational throughput for real-time applications.

How much Flash memory does STM32F373RCT6 have?

The STM32F373RCT6 has 256 KB of Flash memory. This is sufficient for complex firmware, including communication stacks and application code, as specified in the STM32F373xx datasheet.

What is the supply voltage range of STM32F373RCT6?

The STM32F373RCT6 operates over a supply voltage range of 2.0V to 3.6V. This wide range allows flexible power supply design, as documented in the STM32F373xx datasheet.

What package is STM32F373RCT6 available in?

The STM32F373RCT6 is available in an LQFP-64 package. This 64-pin package provides 51 GPIO pins and is suitable for space-constrained designs, as per the STM32F373xx datasheet.

Does STM32F373RCT6 have a floating-point unit?

Yes, the STM32F373RCT6 includes a floating-point unit (FPU) as part of the ARM Cortex-M4 core. This hardware FPU accelerates single-precision floating-point operations, beneficial for DSP and control algorithms.

What is the ADC resolution of STM32F373RCT6?

The STM32F373RCT6 features a 16-bit ADC with oversampling. This high-resolution ADC enables precise analog measurements, making it ideal for sensor interfaces and data acquisition systems.

Can STM32F373RCT6 be used for motor control?

Yes, the STM32F373RCT6 is well-suited for motor control applications. Its high-resolution ADC, operational amplifiers, and advanced timers with PWM generation support field-oriented control (FOC) of motors.

What communication interfaces are available on STM32F373RCT6?

The STM32F373RCT6 supports I2C, SPI, USART, CAN, and USB interfaces. These interfaces enable connectivity with sensors, displays, and other microcontrollers, as listed in the datasheet.

What is the operating temperature range of STM32F373RCT6?

The STM32F373RCT6 operates over a temperature range of -40°C to +85°C. This industrial temperature range ensures reliable operation in harsh environments.

Is STM32F373RCT6 RoHS compliant?

Yes, the STM32F373RCT6 is RoHS compliant. STMicroelectronics ensures compliance with the Restriction of Hazardous Substances directive, as stated in the product documentation.

Where can I buy STM32F373RCT6 online?

The STM32F373RCT6 is available from major distributors such as DigiKey and Mouser. As of 2026-08-06, it is in stock at these distributors, with pricing starting at $8.50 for single-unit quantities.

What is the price of STM32F373RCT6?

As of 2026-08-06, the price of STM32F373RCT6 is $8.50 for a single unit, decreasing to $5.44 at 1000-unit quantities. Prices are subject to change and may vary by distributor.

What is the lead time for STM32F373RCT6?

The typical lead time for STM32F373RCT6 is 4-6 weeks from distributors, depending on stock levels. As of 2026-08-06, DigiKey and Mouser show stock available, so immediate shipment is possible.

STM32F373RCT6 vs STM32F303RCT6 - which is better for analog applications?

The STM32F373RCT6 is better for analog applications due to its 16-bit ADC with oversampling and integrated operational amplifiers, whereas the STM32F303RCT6 has a 12-bit ADC. The STM32F373RCT6 provides higher precision for sensor measurement and control.

What is the difference between STM32F373RCT6 and STM32F373VCT6?

The STM32F373RCT6 is in an LQFP-64 package with 51 GPIOs, while the STM32F373VCT6 is in an LQFP-100 package with 84 GPIOs. Both have the same core, memory, and peripherals, but the VCT6 offers more I/O for larger designs.

When should I choose STM32F373RCT6 over STM32F103RCT6?

Choose the STM32F373RCT6 when you need higher analog precision (16-bit ADC vs 12-bit) and a Cortex-M4 core with FPU for DSP tasks. The STM32F103RCT6 is a Cortex-M3 with lower performance and fewer analog features.

What is the best drop-in replacement for STM32F373RCT6?

The best drop-in replacement for STM32F373RCT6 is the STM32F373RCT7, which is pin-compatible and has the same package and memory, but with an extended temperature range. Other alternatives include STM32F373RBT6 (128KB Flash) and STM32F373R8T6 (64KB Flash), but these have less memory.

Can STM32F303RCT6 replace STM32F373RCT6?

The STM32F303RCT6 is pin-compatible with the STM32F373RCT6 in the same LQFP-64 package, but it has a 12-bit ADC instead of 16-bit. It can replace the STM32F373RCT6 in many applications, but you may lose ADC precision.

Where can I download the STM32F373RCT6 datasheet PDF?

The STM32F373RCT6 datasheet PDF can be downloaded from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm32f373rc.pdf. It contains full specifications, pinout, and application notes.

Where can I find the STM32F373RCT6 pinout?

The STM32F373RCT6 pinout is detailed in the datasheet, specifically in the 'Pin descriptions' section. The LQFP-64 package pinout is available on page 32 of the STM32F373xx datasheet.

Hey Google, what can replace STM32F373RCT6?

The STM32F373RCT6 can be replaced by the STM32F373RCT7 (extended temperature), STM32F373RBT6 (128KB Flash), or STM32F303RCT6 (12-bit ADC). All are pin-compatible in LQFP-64, but verify memory and ADC requirements.

Is STM32F373RCT6 the same as STM32F373VCT6?

No, the STM32F373RCT6 and STM32F373VCT6 are not the same. The RCT6 has 64 pins (LQFP-64) and 51 GPIOs, while the VCT6 has 100 pins (LQFP-100) and 84 GPIOs. They share the same core and memory, but differ in package and I/O count.

What are the key specifications of STM32F373RCT6 that engineers should know?

The STM32F373RCT6 features a 72 MHz ARM Cortex-M4 core with FPU, 256 KB Flash, 32 KB SRAM, 16-bit ADC, 12-bit DAC, 3 op-amps, and 2 comparators. It operates from 2.0V to 3.6V and is available in LQFP-64. These specs make it ideal for precision analog and control applications.

What is the best STMicroelectronics equivalent for STM32F373RCT6?

The best STMicroelectronics equivalent for STM32F373RCT6 is the STM32F373RCT7, which is pin-compatible and offers the same features but with an extended temperature range (-40°C to +105°C). It is a drop-in replacement for most applications.

Engineering reference data for STM32F373RCT6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM32F373RCT6 when you need high-precision analog measurement (16-bit ADC) and integrated op-amps for signal conditioning, along with a Cortex-M4 core for DSP tasks. If you require extended temperature range, select the STM32F373RCT7. For applications with lower memory requirements, the STM32F373RBT6 (128KB Flash) or STM32F373R8T6 (64KB Flash) are cost-effective drop-in options. If you do not need the 16-bit ADC or op-amps, the STM32F303RCT6 offers similar performance with a 12-bit ADC at a lower cost. For higher clock speed and more memory, consider the Microchip ATSAMD51J19A, but verify pin compatibility and software migration effort.

Comparison with Alternatives

Parameter	This Product	STM32F373RCT7	STM32F373RBT6	STM32F303RCT6	ATSAMD51J19A
Package	LQFP-64	LQFP-64	LQFP-64	LQFP-64	LQFP-64
Brand	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	Microchip Technology
Core	ARM Cortex-M4 with FPU	ARM Cortex-M4 with FPU	ARM Cortex-M4 with FPU	ARM Cortex-M4 with FPU	ARM Cortex-M4F
Maximum Clock Frequency	72 MHz	72 MHz	72 MHz	72 MHz	120 MHz
Flash Memory	256 KB	256 KB	128 KB	256 KB	512 KB
SRAM	32 KB	32 KB	24 KB	40 KB	192 KB
ADC Resolution	16-bit	16-bit	16-bit	12-bit	12-bit
Operational Amplifiers	3	3	3	0	0
Supply Voltage Range	2.0V to 3.6V	2.0V to 3.6V	2.0V to 3.6V	2.0V to 3.6V	1.71V to 3.63V

Key Differentiators

16-bit ADC with oversampling (vs STM32F303RCT6)
Integrated operational amplifiers (vs STM32F303RCT6)
Cortex-M4 with FPU (vs STM32F103RCT6)

Design Notes

Decouple each VDD pin with a 100nF ceramic capacitor placed as close to the pin as possible. Additionally, connect a 4.7uF capacitor to the VDDA pin and a 1uF capacitor to VREF+ to ensure stable analog supply and reference voltage. Use a ground plane to minimize noise.

For the LQFP-64 package, ensure proper solder paste stencil design to avoid bridging. Use a 0.5mm pitch land pattern as recommended in the ST application note AN4666. Provide thermal relief for the exposed pad if present, and ensure adequate copper pour for heat dissipation.

Do not leave the BOOT0 pin floating; connect it to ground through a 10k resistor for normal boot from Flash. Ensure the NRST pin is pulled high with a 100nF capacitor to ground for reliable reset. When using the ADC, avoid digital switching noise near the analog pins by separating analog and digital ground planes.