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 applications 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.
Key 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:;
VDD, VDDA 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