Product overview
Description
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 (up to 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 (4 Msps), four comparators, four four DAC channels (two external and two internal), an internal voltage reference buffer, a low-power RTC, one general-purpose 32-bit timer, 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.
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All features
- Includes ST state-of-the-art patented technology
- 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 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™
- All packages are ECOPACK2 compliant
Circuit Diagram
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All resources
| Resource title | Version | Latest update |
|---|
System View Description (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 2.2 | 13 Jul 2023 | 13 Jul 2023 |
IBIS models (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 4.0 | 29 Jul 2024 | 29 Jul 2024 |
BSDL files (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 3.0 | 12 Oct 2021 | 12 Oct 2021 |
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| STM32G491REI3 | Active | UFBGA 64 5x5x0.6 P 0.5 mm | Industrial | Ecopack2 | |
| STM32G491REI6 | Active | UFBGA 64 5x5x0.6 P 0.5 mm | Industrial | Ecopack2 | |
| STM32G491RET3 | Active | LQFP 64 10x10x1.4 mm | Industrial | Ecopack2 | |
| STM32G491RET6 | Active | LQFP 64 10x10x1.4 mm | Industrial | Ecopack2 | |
| STM32G491RET6TR | Active | LQFP 64 10x10x1.4 mm | Industrial | Ecopack2 | |
| STM32G491REY6TR | Active | WLCSP 64 3.5x3.6x0.6 P 0.4 mm | Industrial | Ecopack2 |
STM32G491REI3
Package:
UFBGA 64 5x5x0.6 P 0.5 mmMaterial Declaration**:
STM32G491REI6
Package:
UFBGA 64 5x5x0.6 P 0.5 mmMaterial Declaration**:
STM32G491RET6
Package:
LQFP 64 10x10x1.4 mmMaterial Declaration**:
PDFSTM32G491RET6TR
Package:
LQFP 64 10x10x1.4 mmMaterial Declaration**:
PDFSTM32G491REY6TR
Package:
WLCSP 64 3.5x3.6x0.6 P 0.4 mmMaterial Declaration**:
PDF(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | D/A Converters (typ) (12-bit) | Timers (typ) (16-bit) | Timers (typ) (32-bit) | Number of Channels (typ) | SMPS | Number of Channels (typ) | UART (typ) | I/Os (High Current) | Integrated op-amps | Comparator | SPI (typ) | USART (typ) | Number of Channels (typ) | I2S (typ) | Advanced Motor Control Timers | CAN (2.0) | CAN (FD) | ||
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| STM32G491RET6TR | | | distributors No availability of distributors reported, please contact our sales office |
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| STM32G491RET3 | | | distributors No availability of distributors reported, please contact our sales office |
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| STM32G491RET6 | | | distributors No availability of distributors reported, please contact our sales office |
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| STM32G491REY6TR | | | distributors No availability of distributors reported, please contact our sales office |
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| STM32G491REI6 | | | distributors No availability of distributors reported, please contact our sales office |
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| STM32G491REI3 | | | distributors No availability of distributors reported, please contact our sales office |
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STM32G491RET6TR Active
STM32G491RET3 Active
STM32G491RET6 Active
STM32G491REY6TR Active
STM32G491REI6 Active
STM32G491REI3 Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors