STM32L4R9VIT6                      Description

  STM32L4R5xx, STM32L4R7xx and STM32L4R9xx devices are a family of ultra-low power microcontrollers (STM32L4+ series) based on a high-performance ARM Cortex - M4 32-bit RISC core. They operate at frequencies as high as 120 MHz. The Cortex-M4 kernel uses a single-precision floating-point unit (FPU) that supports all ARM single-precision data processing instructions and all data types. The Cortex M4 kernel also implements a complete set of DSP (Digital signal processing) instructions and memory protection unit (MPU), thereby enhancing the security of the application. These devices embed high-speed memory (2 MB flash and 640K SRAM), a flexible external memory controller (FSMC) for static memory (for devices with 100pin and above packages), two OccSPI flash interfaces (available in all packages), and various enhanced Icano and peripherals connected to two APB buses, two AHB buses, and a 32-bit multi-AHB bus matrix.

STM32L4R9VIT6                    Features

? Ultra-low-power with FlexPowerControl

– 1.71 V to 3.6 V power supply

– -40 °C to 85/125 °C temperature range

– Batch acquisition mode (BAM)

– 305 nA in VBAT mode: supply for RTC and

32x32-bit backup registers

– 33 nA Shutdown mode (5 wakeup pins)

– 125 nA Standby mode (5 wakeup pins)

– 420 nA Standby mode with RTC

– 2.8 μA Stop 2 with RTC

– 110 μA/MHz Run mode (LDO mode)

– 43 μA/MHz Run mode (@ 3.3 V SMPS

mode)

– 5 μs wakeup from Stop mode

– Brownout reset (BOR) in all modes except

shutdown

– Interconnect matrix

? 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 120 MHz,

MPU, 150 DMIPS/1.25 DMIPS/MHz

(Dhrystone 2.1), and DSP instructions

? Performance benckmark

– 1.25 DMIPS/MHz (Drystone 2.1)

– 409.20 Coremark? (3.41 Coremark/MHz

@120 MHz)

? Energy benckmark

– 233 ULPMark?CP score

– 56.5 ULPMark?PP score

? Clock sources

– 4 to 48 MHz crystal oscillator

– 32 kHz crystal oscillator for RTC (LSE)

– Internal 16 MHz factory-trimmed RC (±1%)

– Internal low-power 32 kHz RC (±5%)

STM32L4R9VIT6                    Applications

 memory controller