Overview
The STM32G491REI6, produced by STMicroelectronics, is a high-performance microcontroller based on the Arm® Cortex®-M4 32-bit RISC core. It operates at a frequency of up to 170 MHz and features a single-precision floating-point unit (FPU), DSP instructions, and a memory protection unit (MPU) for enhanced security. The device includes 512 Kbytes of flash memory and 96 Kbytes of SRAM, along with a Quad-SPI flash memory interface and various protection mechanisms for embedded memory. It supports a wide range of peripherals and communication interfaces, making it suitable for diverse applications requiring high performance and low power consumption.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator) |
| Frequency | Up to 170 MHz with 213 DMIPS |
| Memories | 512 Kbytes of flash memory, 96 Kbytes of SRAM, 16 Kbytes of CCM SRAM |
| Operating Voltage | 1.71 V to 3.6 V |
| Operating Temperature | -40 to +85 °C (+105 °C junction), -40 to +125 °C (+130 °C junction) |
| ADCs | Three 12-bit ADCs (4 Msps), up to 36 channels |
| DACs | Four 12-bit DAC channels (2 external, 2 internal) |
| Timers | One 32-bit timer, eleven 16-bit timers, two watchdog timers |
| Communication Interfaces | Three I2Cs, three SPIs, three USARTs, two UARTs, one low-power UART, two FDCANs, one SAI, USB device, UCPD |
| Package | UFBGA 64 5x5x0.6 P 0.5 mm |
Key Features
- Includes ST state-of-the-art patented technology
- Mathematical hardware accelerators: CORDIC for trigonometric functions and FMAC for filter functions
- Quad-SPI flash memory interface
- Low-power modes: sleep, stop, standby, and shutdown
- VBAT supply for RTC and backup registers
- Internal voltage reference buffer (VREFBUF) supporting three output voltages
- Four ultra-fast rail-to-rail analog comparators and four operational amplifiers
- 16-channel DMA controller and up to 86 fast I/Os
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
- All packages are ECOPACK2 compliant
Applications
The STM32G491REI6 is versatile and can be used in various applications, including:
- Industrial automation and control systems
- Personal electronics and consumer devices
- Automotive systems, especially for advanced motor control
- Medical devices requiring precise analog and digital processing
- IoT devices that need low power consumption and high performance
Q & A
- What is the core architecture of the STM32G491REI6?
The STM32G491REI6 is based on the Arm® Cortex®-M4 32-bit RISC core.
- What is the maximum operating frequency of the STM32G491REI6?
The maximum operating frequency is up to 170 MHz with 213 DMIPS.
- What types of memory does the STM32G491REI6 have?
The device includes 512 Kbytes of flash memory, 96 Kbytes of SRAM, and 16 Kbytes of CCM SRAM.
- What are the operating voltage and temperature ranges of the STM32G491REI6?
The operating voltage range is 1.71 V to 3.6 V, and the operating temperature range is -40 to +85 °C (+105 °C junction), -40 to +125 °C (+130 °C junction).
- What types of analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) are available on the STM32G491REI6?
The device features three 12-bit ADCs (4 Msps) and four 12-bit DAC channels (two external and two internal).
- What communication interfaces are supported by the STM32G491REI6?
The device supports three I2Cs, three SPIs, three USARTs, two UARTs, one low-power UART, two FDCANs, one SAI, USB device, and UCPD.
- What are the low-power modes available on the STM32G491REI6?
The device supports sleep, stop, standby, and shutdown low-power modes.
- What is the package type of the STM32G491REI6?
The package type is UFBGA 64 5x5x0.6 P 0.5 mm.
- Is the STM32G491REI6 compliant with any environmental standards?
Yes, all packages are ECOPACK2 compliant.
- What development tools are supported by the STM32G491REI6?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
- What are some typical applications of the STM32G491REI6?
Typical applications include industrial automation, personal electronics, automotive systems, medical devices, and IoT devices.
