STMicroelectronics STM32G491RET6, 32bit ARM Cortex M4 Microcontroller MCU, STM32G4, 48MHz, 512 kB Flash, 64-Pin LQFP

RS Stock No.:: 215-0850
Mfr. Part No.:: STM32G491RET6
Brand:: STMicroelectronics

STMicroelectronics STM32G491RET6, 32bit ARM Cortex M4 Microcontroller MCU, STM32G4, 48MHz, 512 kB Flash, 64-Pin LQFP

Bulk discount available

Subtotal (1 pack of 2 units)**

£11.84

(exc. VAT)

£14.20

(inc. VAT)

Available to back order for despatch 09/06/2025*

* Delivery dates may change based on your chosen quantity and delivery address.

FREE delivery for orders over £50.00

Units	Per unit	Per Pack**
2 - 8	£5.92	£11.84
10 - 18	£5.33	£10.66
20 - 48	£5.23	£10.46
50 +	£5.095	£10.19

**price indicative

RS Stock No.:: 215-0850
Mfr. Part No.:: STM32G491RET6
Brand:: STMicroelectronics

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

The STMicroelectronics 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.

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:

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
V_BAT 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

Attribute	Value
Family Name	STM32G4
Package Type	LQFP
Mounting Type	Surface Mount
Pin Count	64
Device Core	ARM Cortex M4
Data Bus Width	32bit
Program Memory Size	512 kB
Maximum Frequency	48MHz
Program Memory Type	Flash

STMicroelectronics STM32G491RET6, 32bit ARM Cortex M4 Microcontroller MCU, STM32G4, 48MHz, 512 kB Flash, 64-Pin LQFP

FREE delivery for orders over £50.00

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

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:

Mathematical hardware accelerators

Memories

Reset and supply management

Clock management

Up to 86 fast I/Os

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

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

Related links

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STMicroelectronics STM32G491RET6, 32bit ARM Cortex M4 Microcontroller MCU, STM32G4, 48MHz, 512 kB Flash, 64-Pin LQFP

FREE delivery for orders over £50.00

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

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:

Mathematical hardware accelerators

Memories

Reset and supply management

Clock management

Up to 86 fast I/Os

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

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

Related links

Be the first to know about our latest products and services

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