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STMicroelectronics STM32G474CBT6
- Part No.:
- STM32G474CBT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32G474CBT6.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,923
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Product details
Overview
STM32G474CBT6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 170 MHz (213 DMIPS), featuring 512 KB Flash with ECC, 96 KB SRAM (32 KB with hardware parity), and integrated CORDIC/FMAC math accelerators. It delivers 184 ps resolution on its HRTIM for high-precision motor control in industrial inverters.
For engineers reviewing the STM32G474CBT6 datasheet, STM32G474CBT6 pinout, STM32G474CBT6 application, or STM32G474CBT6 equivalent, key selection criteria include its dual-bank read-while-write Flash, 7-channel 12-bit DAC (3 buffered at 1 MSPS), 5×12-bit ADCs with 42-channel multiplexing, and FDCAN support for automotive-grade communication.
Technical Context
The device integrates an Adaptive Real-time Accelerator (ART) enabling zero-wait-state execution from Flash, and a multi-AHB interconnect matrix supporting concurrent peripheral access. Its power architecture includes programmable voltage detector (PVD), multiple low-power modes (sleep/stop/standby/shutdown), and VBAT-backed RTC with alarm and periodic wakeup.
Timing subsystem comprises 17 timers including HRTIM (6×16-bit counters, 184 ps resolution), three 16-bit advanced motor control timers with dead-time generation and emergency stop, plus FDCAN controllers compliant with ISO 11898-1:2015 for flexible data-rate operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 170 MHz max frequency (213 DMIPS) |
| Memory | 512 KB Flash with ECC and PCROP; 96 KB SRAM (32 KB with hardware parity) |
| Analog Peripherals | 5×12-bit ADCs (0.25 µs conversion, up to 42 channels); 7×12-bit DACs (3 buffered external @ 1 MSPS) |
| High-Resolution Timer | HRTIM with 184 ps timing resolution, 12 PWM outputs, and complex waveform synthesis |
| Communication | 3×FDCAN (ISO 11898-1:2015), 5×USART/UART, 4×I²C (Fast-mode Plus), USB 2.0 FS with LPM/BCD |
| Math Acceleration | CORDIC engine for trigonometric functions; FMAC for digital filter computation |
| Package | LQFP48 (7 × 7 mm), 48-pin, RoHS-compliant, industrial temperature range (–40°C to +85°C) |
Pinout & Package
LQFP48 package with exposed thermal pad; 48-pin quad flat pack, 0.5 mm pitch, JEDEC standard footprint compatible with automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Core & analog supply | 1.71–3.6 V operation; separate analog rail enables precision ADC/DAC performance |
| VSS, VSSA | Digital & analog ground | Independent grounding reduces noise coupling between digital switching and analog conversion |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external reset sources and brownout detection |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | Up to 107 fast I/Os; most support 5 V tolerance and remappable interrupt vectors |
| PA1, PA2, PA3, etc. | Alternate function pins | Support FDCAN_RX/TX, USART_TX/RX, SPI_MOSI/MISO/SCK, TIMx_CHy, ADC_INy, DAC_OUTy |
| VBAT | RTC backup supply | Enables calendar RTC and 32 backup registers during main power loss |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Real-time Accelerator (ART) | Enables 0-wait-state execution from Flash memory, eliminating instruction fetch stalls at full 170 MHz |
| CORDIC & FMAC engines | Hardware-accelerated trigonometric and filtering operations reduce CPU load by >70% vs software implementation |
| Dual-bank Flash with RWW | Allows firmware update in one bank while executing from the other-critical for fail-safe field upgrades |
| HRTIM ultra-fine timing | 184 ps resolution and 12 independent PWM outputs enable precise gate driving in SiC/GaN inverter designs |
| FDCAN with FD mode | Supports data rates up to 5 Mbps and payloads up to 64 bytes-meets modern automotive ECU bandwidth needs |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Closed-loop vector control of 3-phase PMSM/BLDC motors in HVAC compressors and pump inverters. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, managing gate drivers via HRTIM PWM, and sampling current/voltage via synchronized ADC triggers. Use Value: 184 ps HRTIM resolution enables <1 ns dead-time accuracy; dual-bank Flash allows seamless OTA updates without halting motion control. | Use Scenario: Central body controller managing lighting, window lift, seat position, and door locks in 12 V vehicle architectures. IC Role / Device Role / Timing Role: System-on-chip host with FDCAN interfaces for LIN-to-CAN gateway functions and robust 5 V-tolerant I/Os for direct switch/sensor interfacing. Use Value: Integrated 3×FDCAN controllers eliminate external transceivers; 107 GPIOs support mixed-signal sensor fusion without external logic. |
| Programmable Power Supplies | Digital Audio Signal Processors |
Use Scenario: Digitally controlled AC/DC and DC/DC converters with adaptive voltage/current regulation and protection. IC Role / Device Role / Timing Role: Real-time regulator controller using CORDIC for RMS calculation and FMAC for PID loop filtering, with ADC-triggered PWM modulation. Use Value: Hardware math accelerators cut control loop latency to <5 µs; 7 DAC channels provide independent reference and bias voltages. | Use Scenario: Low-latency audio processing node in smart speakers and soundbars with analog input/output and USB audio class support. IC Role / Device Role / Timing Role: Audio interface hub with SAI, I²S-muxed SPI, USB 2.0 FS, and 5×ADC/7×DAC for multi-channel analog front-end conditioning. Use Value: Simultaneous 5 ADC inputs and 7 DAC outputs enable full-duplex 4-in/4-out audio path; USB BCD ensures plug-and-play charger detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G473CBT6 | No FDCAN; 384 KB Flash; no CORDIC/FMAC accelerators | Suitable for cost-sensitive motor control without CAN FD or advanced math requirements | Select when FDCAN and hardware math acceleration are not required |
| STM32H743VIT6 | Cortex-M7 core @ 480 MHz; 2 MB Flash; dual-core capability; no HRTIM | Better for high-throughput signal processing but lacks sub-nanosecond PWM timing | Choose for compute-intensive tasks where ultra-fine PWM resolution is secondary |
Compared with STM32G474CBT6, STM32G473CBT6 trades FDCAN and math accelerators for lower cost and power, while STM32H743VIT6 offers higher CPU throughput at the expense of HRTIM's 184 ps resolution-making G474CBT6 optimal for time-critical motor and power conversion systems.
Availability
STM32G474CBT6 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, programmable power supplies, and digital audio signal processors requiring stable component supply across extended production lifecycles.
Supply support for STM32G474CBT6 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, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.
The STM32G4 series targets high-performance, resource-rich embedded applications demanding real-time control, analog integration, and mathematical acceleration-especially in motor control, digital power, and industrial automation.
FAQ
What is the maximum operating frequency and associated performance metric of the STM32G474CBT6?
The STM32G474CBT6 operates at up to 170 MHz with an integer performance rating of 213 DMIPS (Dhrystone MIPS). This is achieved using the Arm Cortex-M4 core with FPU and Adaptive Real-time Accelerator (ART), which enables zero-wait-state execution from Flash memory under all operating conditions.
Does the STM32G474CBT6 support true hardware-based cryptographic functions?
No-the STM32G474CBT6 does not integrate dedicated cryptographic accelerators (e.g., AES, SHA, PKA). It includes a True Random Number Generator (RNG) and 96-bit unique ID for secure boot seeding and device identity, but encryption/decryption must be implemented in software or via external co-processors.
How many independent ADC instances are integrated, and what is their maximum aggregate sampling rate?
The device integrates five independent 12-bit ADCs, each capable of up to 4.2 MSPS (0.25 µs conversion time). With interleaved triggering and DMA-driven transfers, the effective aggregate sampling rate reaches 21 MSPS across all five units-enabling simultaneous multi-channel current/voltage sensing in motor control applications.
Is the LQFP48 package of STM32G474CBT6 pin-compatible with other members of the STM32G474x family?
Yes-the LQFP48 variant (e.g., STM32G474CBT6) shares identical pinout, power sequencing, and peripheral mapping with other LQFP48-packaged devices in the G474xB/C/E series (e.g., STM32G474RBT6), allowing drop-in replacement within the same package option based on Flash size and feature set.
STM32G474CBT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM32G4
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4F
- Core Size:
- 32-Bit Single-Core
- Speed:
- 170MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, QSPI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, POR, PWM, 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; D/A 7x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G474CBT6 FAQ
1.How can I place an order for STM32G474CBT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G474CBT6 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 STM32G474CBT6 reliable?
The price and inventory of STM32G474CBT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G474CBT6 is usually 5 days.
3.What payment methods are accepted for STM32G474CBT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G474CBT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G474CBT6?
STM32G474CBT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G474CBT6 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 STM32G474CBT6?
For technical support, including STM32G474CBT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G474CBT6 requirements.
6.How does Aetrix verify that STM32G474CBT6 is sourced from the original manufacturer or authorized distributors?
All STM32G474CBT6 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 STM32G474CBT6 meets industry standards.
7.What is the process for return or replacement of STM32G474CBT6?
All STM32G474CBT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G474CBT6, 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 STM32G474CBT6 part is unused and in its original packaging.
Return procedure for STM32G474CBT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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