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STMicroelectronics expand the STM32G4 Access Line of ARM microcontrollers with increased memory capacity options, evaluation kit and samples available from Anglia

STMicroelectronics STM32G4

 

STMicroelectronics has expanded its popular STM32G4 Access Line with the addition of the STM32G491 and STM32G4A1 microcontrollers. These latest members of the STM32G4 Access Line offer increased memory capacity with 112 KB of RAM and up to 512 KB of Flash, compared to the 32 KB of RAM and 128 KB of Flash of the STM32G431. The STM32G4A1 also has a crypto core for applications that require increased security.

The STM32G4 Access Line is a range of mixed-signal microcontrollers with high-resolution timers and a maths accelerator. The high-resolution timer and FMAC (Filter Math ACcelerator) are useful for digital power applications whilst integrated Motor Control timers and CORDIC maths accelerator optimizes motor control systems. The STM32G4 remains a general-purpose MCU in the strict sense of the term, meaning that it will support any embedded system meant to run on a Cortex-M4 and supported by generic STM32 ecosystem. However, it also targets precise applications by providing analog and digital peripherals or features usually absent from similar general-purpose MCUs.

The STM32G4 Access Line provides a cost-effective microcontroller for a wide range of applications including demanding motor control systems but without compromising performances thanks to its Cortex-M4 running at 170 MHz. Developers can now use the STM32G4 in more cost-effective motor control systems, until now, the only solution was to use an STM32G0 with external analog components. The latter is excellent for cost-oriented customers, but there was still a need for more performance and analog integration, the STM32G4 Access Line delivers this. The latest STM32G491/4A1 increased memory additions to the Access Line are pin-to-pin compatible with other STM32G4 models giving developers a fast and simple upgrade path.

STM32G4 Access Line Block Diagram

STM32G4 Access Line Block Diagram

The STM32G491 and STM32G4A1 adopt a similar architecture as the other member of the Access Line series. As a result, the microcontrollers do not offer high-resolution timers since engineers only need them for digital power systems. However, they do have the USB-C PD controller, two FDCAN interfaces, and a slew of other communication peripherals. Engineers will also find three fast 12-bit ADCs with gain and offset compensation to offload the CPU. The latest models also include four operational amplifiers, four DAC channels, four ultra-fast comparators, and more.

Click below for an overview of the STM32G4 MCU family

The STM32G4 Access Line is now offered in 35 models with 2 RAM memory sizes, 32KB and 112KB, and 5 Flash memory sizes, 32KB, 64KB, 128KB, 256KB and 512KB. Offered in pin counts from 32 to 100 pins the Access Line includes 10 models with Crypto AES-256 support.

FREE Evaluation Kit and Samples   
Key Features & Benefits
  • Core: Arm® 32-bit Cortex®-M4 CPU with FPU, frequency up to 170 MHz with 213 DMIPS
  • 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™
Data

STM32G4 Access Line range overview

STM32G4 Access Line Block Diagram

Long Term support for Industrial applications

Long Term support for Industrial applicationsThe STM32G4 Access Line MCU’s are included in STMicroelectronics product longevity program which guarantees the products will remain in mass production for 10 years from the product introduction date. This gives industrial product designers the confidence to integrate them into their applications knowing the parts will not be discontinued in a short space of time.

Development Board

Development Board

The STM32G4x1 access line of microcontrollers are supported by the NUCLEO-G491RE Nucleo-64 development board that gives designers an affordable and flexible way 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 STMicroelectronics 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 and comes with the STM32 comprehensive free software libraries and examples available with the STM32Cube MCU Package.

Anglia are offering customers a FREE development kit and samples of the expanded STM32G4 Access Line microcontrollers from STMicroelectronics, please fill in the form below to register for evaluation kit and samples now.

To register for a FREE development kit and samples of the expanded STM32G4 Access Line microcontrollers from STMicroelectronics, please fill in the form below

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FREE samples for UK and Ireland customers only, subject to availability.

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