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STMicroelectronics STM32G473CBT6
- Part No.:
- STM32G473CBT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32G473CBT6.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:764
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Product details
Overview
STM32G473CBT6 from STMicroelectronics is an Arm® Cortex®-M4 32-bit microcontroller with FPU, 512 KB Flash (ECC-enabled), 128 KB SRAM (including 32 KB CCM-SRAM with parity), and integrated analog peripherals including five 12-bit ADCs (0.25 µs conversion), seven 12-bit DACs, six rail-to-rail op-amps, and hardware math accelerators (CORDIC + FMAC). It operates up to 170 MHz (213 DMIPS) and targets high-precision motor control, digital power conversion, and industrial sensing systems.
For engineers reviewing the STM32G473CBT6 datasheet, STM32G473CBT6 pinout, STM32G473CBT6 application, or STM32G473CBT6 equivalent, key selection criteria include its dual-bank Flash with read-while-write capability, 32-pin LQFP48 package with 5 V-tolerant I/Os, FDCAN support for flexible data-rate automotive/industrial networks, and dedicated analog subsystem for closed-loop real-time signal processing.
Technical Context
The STM32G473CBT6 implements a tightly coupled architecture where the Adaptive Real-Time (ART) Accelerator enables zero-wait-state execution from Flash at 170 MHz, while the interconnect matrix ensures deterministic latency for concurrent DMA transfers across peripherals including ADCs, timers, and communication interfaces. Its memory protection unit (MPU) supports secure partitioning of code and data regions in safety-critical applications.
Hardware acceleration is deeply integrated: the CORDIC engine computes trigonometric functions in ≤10 cycles, and the FMAC performs parallel FIR/IIR filtering without CPU intervention. The analog subsystem features independent calibration registers per ADC channel and programmable gain amplifier (PGA) modes on all six op-amps - enabling direct sensor interface without external signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP instructions, delivering 213 DMIPS at 170 MHz - enables real-time control loops with floating-point math in motor drives. |
| Flash Memory | 512 KB with ECC, dual-bank architecture - supports seamless firmware updates via read-while-write and secure boot verification. |
| SRAM | 128 KB total: 96 KB general-purpose + 32 KB CCM-SRAM (parity-checked) - isolates critical control code from bus contention. |
| Analog Peripherals | 5 × 12-bit ADCs (42 channels, 0.25 µs), 7 × 12-bit DACs (3 buffered @ 1 MSPS), 6 op-amps (PGA mode), 7 comparators - forms complete analog front-end for multi-sensor feedback systems. |
| Timers | 14 timers including 3 × 16-bit advanced motor control timers (8 PWM channels, dead-time insertion, emergency stop) - meets IEC 60730 Class B functional safety requirements. |
| Communication | 3 × FDCAN (ISO 11898-1:2015 compliant), 5 × USART, 4 × I²C (Fast Mode Plus), USB FS + UCPD - supports mixed-criticality networks in smart power systems. |
| Package | LQFP48 (7 × 7 mm), 48-pin, 5 V-tolerant I/Os - simplifies interface with legacy 5 V logic and industrial sensors without level shifters. |
Pinout & Package
LQFP48 (7 × 7 mm) package with exposed thermal pad; RoHS-compliant, industrial temperature range (–40 °C to +85 °C); pin pitch 0.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Core & analog supply | 1.71–3.6 V operation; separate analog domain ensures clean reference for ADC/DAC/OPAMP subsystems. |
| VSS, VSSA | Digital & analog ground | Independent grounding reduces noise coupling between digital switching and precision analog measurements. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2, PF0–PF1 | General-purpose I/Os | Up to 42 GPIOs mappable to EXTI; 5 V-tolerant on selected pins - enables direct connection to industrial sensors and actuators. |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB12–PB15, PC0–PC5, PC10–PC15, PD2, PF0, PF1 | ADC input channels | 42-channel multiplexed input support - allows simultaneous sampling across multiple current/voltage/temperature sensors. |
| PA4, PA5, PA6, PA7, PB0, PB1, PB15, PC0–PC2, PC4, PC5 | DAC output channels | 7 independent 12-bit outputs: 3 buffered (1 MSPS), 4 unbuffered (15 MSPS) - supports multi-axis waveform generation and fast actuator control. |
| PA8–PA15, PB3–PB10, PB12–PB15, PC6–PC15, PD0–PD2, PF0–PF1 | Alternate function (AF) capable | Supports FDCAN, USART, SPI, I²C, TIM, SAI - enables flexible peripheral routing without PCB redesign. |
Key Features
| Feature | Design Value |
|---|---|
| CORDIC accelerator | Hardware trigonometric computation (sin/cos/tan/atan) in ≤10 cycles - eliminates software library overhead in field-oriented motor control. |
| FMAC filter engine | Parallel 32-bit MAC operations with 16-bit coefficient/data - enables real-time 200-tap FIR filtering for EMI suppression in digital power supplies. |
| Adaptive Real-Time Accelerator (ART) | Zero-wait-state Flash execution at 170 MHz - guarantees deterministic interrupt latency (<12 cycles) for time-critical control tasks. |
| Proprietary Code Readout Protection (PCROP) | Configurable read/write protection per Flash sector - enforces IP security in licensed firmware modules without external secure element. |
| Internal voltage reference buffer (VREFBUF) | Three selectable outputs (2.048 V, 2.5 V, 2.9 V) with ±0.5% accuracy - provides stable reference for ADC/DAC calibration without external components. |
Applications
| Industrial Motor Drives | Digital Power Supplies |
|---|---|
|
Use Scenario: Field-oriented control (FOC) of 3-phase BLDC/PMSM motors in HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm (Park/Clarke transforms, PI regulators), synchronized PWM generation, and current/voltage sensing via integrated ADCs/DACs. Use Value: Eliminates need for external math coprocessor or FPGA; 170 MHz core + CORDIC/FMAC achieves <5 µs loop time at 20 kHz PWM frequency. |
Use Scenario: Closed-loop regulation in AC-DC and DC-DC SMPS with adaptive load compensation and fault logging. IC Role / Device Role / Timing Role: Primary controller managing voltage/current feedback, digital compensator (PID/FIR), soft-start sequencing, and overvoltage/overcurrent protection. Use Value: Integrated 12-bit ADCs with hardware oversampling (up to 16-bit effective resolution) enable ±0.5% output regulation accuracy across line/load transients. |
| Smart Grid Sensors | Medical Diagnostic Equipment |
|
Use Scenario: High-accuracy energy metering and power quality monitoring in DIN-rail mounted grid edge devices. IC Role / Device Role / Timing Role: Simultaneous sampling of 3-phase voltage/current using 5 ADCs, harmonic analysis via CORDIC/FMAC, and secure data reporting via FDCAN/USB. Use Value: Dual-bank Flash allows A/B firmware update without service interruption; UCPD interface supports USB-C power negotiation for portable test equipment. |
Use Scenario: Portable ultrasound probe signal conditioning and beamforming control in point-of-care imaging systems. IC Role / Device Role / Timing Role: Analog front-end controller for low-noise amplification, variable-gain PGA configuration, and time-of-flight calculation via high-speed timers. Use Value: Six op-amps with accessible terminals enable fully programmable gain stages; 128 KB SRAM buffers raw RF data for real-time FFT processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G431CBT6 | Same Cortex-M4 core but 128 KB Flash, no CORDIC/FMAC, single-bank Flash only. | Suitable for cost-sensitive motor control without complex math; lacks hardware acceleration for real-time harmonic analysis. | Select when BOM cost is primary constraint and control algorithms fit within 128 KB Flash without hardware math assist. |
| STM32F303CCT6 | Cortex-M4 core at 72 MHz, 256 KB Flash, no CORDIC/FMAC, older analog IP (12-bit ADC @ 5 MSPS, no FMAC). | Legacy design continuity for F3-based platforms; lower performance ceiling limits high-frequency PWM or multi-sensor fusion. | Choose only for migration from existing F3 designs where 72 MHz timing margin suffices and no new math acceleration is required. |
Compared with STM32G431CBT6 and STM32F303CCT6, the STM32G473CBT6 delivers 2.4× higher DMIPS, hardware-accelerated math for real-time signal processing, and dual-bank Flash for robust firmware updates - making it optimal for next-generation digital power and motor control requiring deterministic sub-microsecond response.
Availability
STM32G473CBT6 is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, smart grid sensors, and medical diagnostic equipment requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for STM32G473CBT6 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, analog, and MEMS technologies for industrial, automotive, and consumer markets.
The STM32G4 series is designed specifically for high-performance, analog-intensive embedded applications - combining real-time control, rich signal processing, and functional safety features in a single-chip solution for digital power, motor control, and sensing systems.
FAQ
What is the maximum operating frequency and corresponding performance metric of the STM32G473CBT6?
The STM32G473CBT6 operates at up to 170 MHz with an integer performance rating of 213 DMIPS (Dhrystone MIPS), verified under conditions of zero-wait-state Flash execution enabled by the ART Accelerator. Its FPU supports IEEE 754 single-precision operations, and the core includes DSP extensions for efficient MAC and saturating arithmetic used in motor control and digital filtering.
Does the STM32G473CBT6 support hardware cryptographic acceleration or secure boot features?
No - the STM32G473CBT6 does not integrate hardware cryptographic accelerators (AES/RSA/SHA) or a dedicated secure boot ROM. It relies on software-based implementations and optional external secure elements. However, it provides robust firmware protection via Proprietary Code Readout Protection (PCROP), memory write protection, and tamper detection through backup registers and RTC alarm events.
How many analog-to-digital converter (ADC) channels are available, and what is their maximum sampling rate?
The STM32G473CBT6 integrates five independent 12-bit ADCs supporting up to 42 total input channels. Each ADC achieves a maximum conversion time of 0.25 µs (4 MSPS), with hardware oversampling enabling effective resolutions up to 16 bits. All ADCs share common calibration registers and support synchronous sampling across multiple units for phase-aligned measurements in motor control.
Is the STM32G473CBT6 pin-compatible with other members of the STM32G4 family?
Yes - the STM32G473CBT6 in LQFP48 is pin-compatible with other G473 variants sharing the same package (e.g., STM32G473RBT6, STM32G473VBT6), differing only in Flash size and peripheral enablement. However, it is not pin-compatible with G431 or G491 devices due to differences in peripheral mapping, alternate function assignments, and internal voltage regulator configurations.
STM32G473CBT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM32G4
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit
- Speed:
- 170MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, QSPI, SAI, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, POR, PWM, TRNG, WDT
- Number of I/O:
- 38
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 20x12b SAR; D/A 7x12b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G473CBT6 FAQ
1.How can I place an order for STM32G473CBT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G473CBT6 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 STM32G473CBT6 reliable?
The price and inventory of STM32G473CBT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G473CBT6 is usually 5 days.
3.What payment methods are accepted for STM32G473CBT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G473CBT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G473CBT6?
STM32G473CBT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G473CBT6 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 STM32G473CBT6?
For technical support, including STM32G473CBT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G473CBT6 requirements.
6.How does Aetrix verify that STM32G473CBT6 is sourced from the original manufacturer or authorized distributors?
All STM32G473CBT6 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 STM32G473CBT6 meets industry standards.
7.What is the process for return or replacement of STM32G473CBT6?
All STM32G473CBT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G473CBT6, 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 STM32G473CBT6 part is unused and in its original packaging.
Return procedure for STM32G473CBT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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