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STMicroelectronics STM32G491RE

STM32G491RE - Mainstream Arm Cortex-M4 MCU 170 MHz with 512 Kbytes of Flash memory, Math Accelerator, High Analog level integration

The STM32G491xC/xE devices are based on the high-performance Arm® Cortex®-M4 32-bit RISC core. They operate at a frequency of up to 170 MHz. The Cortex-M4 core features a single-precision floating-point unit (FPU), which supports all the Arm single-precision data-processing instructions and all the data types. It also implements a full set of DSP (digital signal processing) instructions and a memory protection unit (MPU) which enhances the application’s security.

These devices embed high-speed memories (512 Kbytes of Flash memory, and 112 Kbytes of SRAM), a Quad SPI Flash memory interface, an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.

The devices also embed several protection mechanisms for embedded Flash memory and SRAM: readout protection, write protection, securable memory area and proprietary code readout protection.

The devices embed peripherals allowing mathematical/arithmetic function acceleration (CORDIC for trigonometric functions and FMAC unit for filter functions).

They offer three fast 12-bit ADCs (5 Msps), four comparators, four operational amplifiers, four DAC channels (2 external and 2 internal), an internal voltage reference buffer, a low-power RTC, one general-purpose 32-bit timers, three 16-bit PWM timers dedicated to motor control, seven general-purpose 16-bit timers, and one 16-bit low-power timer.

They also feature standard and advanced communication interfaces such as:

Three I2Cs
Three SPIs multiplexed with two half duplex I2Ss
Three USARTs, two UARTs and one low-power UART.
Two FDCANs
One SAI
USB device
UCPD

The devices operate in the -40 to +85 °C (+105 °C junction) and -40 to +125 °C (+130 °C junction) temperature ranges from a 1.71 to 3.6 V power supply. A comprehensive set of power-saving modes allows the design of low-power applications.

Some independent power supplies are supported including an analog independent supply input for ADC, DAC, OPAMPs and comparators. A VBAT input allows backup of the RTC and the registers.

The STM32G491xC/xE family offers 9 packages from 32-pin to 100-pin.

Features

Core: Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator) allowing 0-wait-state execution from Flash memory, frequency up to 170 MHz with 213 DMIPS, MPU, DSP instructions
Operating conditions:
- V_DD, V_DDA voltage range: 1.71 V to 3.6 V
Mathematical hardware accelerators
- CORDIC for trigonometric functions acceleration
- FMAC: filter mathematical accelerator
Memories
- 512 Kbytes of Flash memory with ECC support, proprietary code readout protection (PCROP), securable memory area, 1 Kbyte OTP
- 96 Kbytes of SRAM, with hardware parity check implemented on the first 32 Kbytes
- Routine booster: 16 Kbytes of SRAM on instruction and data bus, with hardware parity check (CCM SRAM)
- Quad-SPI memory interface
Reset and supply management
- Power-on/power-down reset (POR/PDR/BOR)
- Programmable voltage detector (PVD)
- Low-power modes: sleep, stop, standby and shutdown
- VBAT supply for RTC and backup registers
Clock management
- 4 to 48 MHz crystal oscillator
- 32 kHz oscillator with calibration
- Internal 16 MHz RC with PLL option (± 1%)
- Internal 32 kHz RC oscillator (± 5%)
Up to 86 fast I/Os
- All mappable on external interrupt vectors
- Several I/Os with 5 V tolerant capability
Interconnect matrix
16-channel DMA controller
3 x ADCs 0.25 µs (up to 36 channels). Resolution up to 16-bit with hardware oversampling, 0 to 3.6 V conversion range

4 x 12-bit DAC channels
- 2 x buffered external channels 1 MSPS
- 2 x unbuffered internal channels 15 MSPS
4 x ultra-fast rail-to-rail analog comparators
4 x operational amplifiers that can be used in PGA mode, all terminals accessible
Internal voltage reference buffer (VREFBUF) supporting three output voltages (2.048 V, 2.5 V, 2.9 V)
15 timers:
- 1 x 32-bit timer and 2 x 16-bit timers with up to four IC/OC/PWM or pulse counter and quadrature (incremental) encoder input
- 3 x 16-bit 8-channel advanced motor control timers, with up to 8 x PWM channels, dead time generation and emergency stop
- 1 x 16-bit timer with 2 x IC/OCs, one OCN/PWM, dead time generation and emergency stop
- 2 x 16-bit timers with IC/OC/OCN/PWM, dead time generation and emergency stop
- 2 x watchdog timers (independent, window)
- 1 x SysTick timer: 24-bit downcounter
- 2 x 16-bit basic timers
- 1 x low-power timer
Calendar RTC with alarm, periodic wakeup from stop/standby
Communication interfaces
- 2 x FDCAN controller supporting flexible data rate
- 3 x I2C Fast mode plus (1 Mbit/s) with 20 mA current sink, SMBus/PMBus, wakeup from stop
- 5 x USART/UARTs (ISO 7816 interface, LIN, IrDA, modem control)
- 1 x LPUART
- 3 x SPIs, 4 to 16 programmable bit frames, 2 x with multiplexed half duplex I2S interface
- 1 x SAI (serial audio interface)
- USB 2.0 full-speed interface with LPM and BCD support
- IRTIM (infrared interface)
- USB Type-C™ /USB power delivery controller (UCPD)
True random number generator (RNG)
CRC calculation unit, 96-bit unique ID
Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™

NUCLEO-G491RE - STM32 Nucleo-64 development board with STM32G491RE MCU, supports Arduino and ST morpho connectivity

The STM32 Nucleo-64 board provides an affordable and flexible way for users to try out new concepts and build prototypes by choosing from the various combinations of performance and power consumption features, provided by the STM32 microcontroller. For the compatible boards, the external SMPS significantly reduces power consumption in Run mode. The ARDUINO® Uno V3 connectivity support and the ST morpho headers allow the easy expansion of the functionality of the STM32 Nucleo open development platform with a wide choice of specialized shields. The STM32 Nucleo-64 board does not require any separate probe as it integrates the ST-LINK debugger/programmer.

The STM32 Nucleo-64 board comes with the STM32 comprehensive free software libraries and examples available with the STM32Cube MCU Package.

Key features

Common features
- STM32 microcontroller in LQFP64 package
- 1 user LED shared with ARDUINO®
- 1 user and 1 reset push-buttons
- 32.768 kHz crystal oscillator
- Board connectors:ARDUINO® Uno V3 expansion connectorST morpho extension pin headers for full access to all STM32 I/Os
- Flexible power-supply options: ST-LINK, USB VBUS, or external sources
- On-board ST-LINK debugger/programmer with USB re-enumeration capability: mass storage, Virtual COM port and debug port
- Comprehensive free software libraries and examples available with the STM32Cube MCU Package
- Support of a wide choice of Integrated Development Environments (IDEs) including IAR Embedded Workbench®, MDK-ARM, and STM32CubeIDE
Board-specific features
- External SMPS to generate V_core logic supply
- 24 MHz HSE
- Board connectors:External SMPS experimentation dedicated connectorMicro-AB or Mini-AB USB connector for the ST-LINKMIPI® debug connector
- Arm® Mbed Enabled™ compliant