Overview
The STM32G491CET6 is a mainstream Arm Cortex-M4 microcontroller (MCU) produced by STMicroelectronics. It is based on the high-performance Arm® Cortex®-M4 32-bit RISC core, operating at a frequency of up to 170 MHz. The Cortex-M4 core includes a single-precision floating-point unit (FPU), a full set of DSP (digital signal processing) instructions, and a memory protection unit (MPU) to enhance application security. This MCU also features several protection mechanisms for embedded Flash memory and SRAM, including readout protection, write protection, securable memory area, and proprietary code readout protection.
Key Specifications
| Specification | Details |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator) |
| Operating Frequency | Up to 170 MHz |
| Memory | 512 Kbytes of Flash memory, 96 Kbytes of SRAM (including 16 Kbytes of CCM SRAM) |
| Communication Interfaces | 3 SPI, 2 I²S, 3 I²C, 3 USART, LPUART, 2 FDCANs, USB, UCPD, SAI |
| Timers | 1 x 32-bit timer, 11 x 16-bit timers (including 3 advanced motor control timers) |
| ADC/DAC | 3 x 12-bit ADCs (18 channels), 2 x 12-bit DACs (4 channels) |
| Analog Peripherals | Internal voltage reference buffer, 4 analog comparators, 4 operational amplifiers |
| Operating Voltage | 1.71 V to 3.6 V |
| Operating Temperature | -40°C to +85°C (junction temperature up to +105°C) |
| Package | LQFP 48 (7x7x1.4 mm) |
Key Features
- Single-precision floating-point unit (FPU) and DSP instructions for enhanced performance
- Memory protection unit (MPU) for improved security
- Protection mechanisms for embedded Flash memory and SRAM (readout protection, write protection, securable memory area, proprietary code readout protection)
- Mathematical hardware accelerators: CORDIC for trigonometric functions and FMAC for filter functions
- Quad-SPI flash memory interface
- Comprehensive set of power-saving modes (sleep, stop, standby, shutdown)
- Low-power RTC, random number generator, and true random number generator (RNG)
- Extensive range of communication interfaces including USB, FDCAN, I²C, SPI, USART, and SAI
- Advanced motor control timers and general-purpose timers
- Internal voltage reference buffer, analog comparators, and operational amplifiers
Applications
The STM32G491CET6 is suitable for a wide range of applications due to its high performance, low power consumption, and extensive set of peripherals. Some typical applications include:
- Industrial automation and control systems
- Medical devices requiring precise analog and digital signal processing
- Automotive systems, including advanced motor control and communication interfaces
- Consumer electronics requiring high-performance and low-power operation
- IoT devices needing robust security and communication capabilities
Q & A
- What is the core architecture of the STM32G491CET6?
The STM32G491CET6 is based on the Arm® 32-bit Cortex®-M4 CPU with a single-precision floating-point unit (FPU) and DSP instructions.
- What is the maximum operating frequency of the STM32G491CET6?
The maximum operating frequency is up to 170 MHz.
- How much memory does the STM32G491CET6 have?
The device has 512 Kbytes of Flash memory and 96 Kbytes of SRAM, including 16 Kbytes of CCM SRAM.
- What communication interfaces are available on the STM32G491CET6?
The device features 3 SPI, 2 I²S, 3 I²C, 3 USART, LPUART, 2 FDCANs, USB, UCPD, and SAI interfaces.
- What are the power-saving modes available on the STM32G491CET6?
The device supports sleep, stop, standby, and shutdown power-saving modes.
- What is the operating voltage range of the STM32G491CET6?
The operating voltage range is from 1.71 V to 3.6 V.
- What are the key analog peripherals of the STM32G491CET6?
The device includes an internal voltage reference buffer, 4 analog comparators, and 4 operational amplifiers.
- Does the STM32G491CET6 support advanced motor control?
Yes, it includes 3 advanced motor control timers with up to 8 PWM channels each.
- What is the package type of the STM32G491CET6?
The device is available in an LQFP 48 (7x7x1.4 mm) package.
- Is the STM32G491CET6 suitable for low-power applications?
Yes, it features a comprehensive set of power-saving modes and low-power peripherals, making it suitable for low-power applications.
- Does the STM32G491CET6 have any security features?
Yes, it includes several protection mechanisms for embedded Flash memory and SRAM, such as readout protection, write protection, securable memory area, and proprietary code readout protection.
