STM32L462RET6 Description
TheSTM32L462RET6device is an ultra-low power microcontroller based on a high-performance ARM Cortex - M4 32-bit RISC core that operates at up to 80 MHz. The Cortex-M4 kernel uses floating-point unit (FPU) single precision and supports all ARM single-precision data processing instructions and data types. It also implements a complete set of DSP instructions and memory protection unit (MPU) to enhance the security of the application. The STM32L462xx device embeds high-speed memory (flash memory up to 512Kbyte, SRAM for 160Kbyte), a four-way SPI flash interface (available in all packages), and various enhanced iGando and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.
STM32L462RET6 Features
? Ultra-low-power with FlexPowerControl
– 1.71 V to 3.6 V power supply
– -40 °C to 85/125 °C temperature range
– 145 nA in VBAT mode: supply for RTC and
32x32-bit backup registers
– 22 nA Shutdown mode (5 wakeup pins)
– 106 nA Standby mode (5 wakeup pins)
– 375 nA Standby mode with RTC
– 2.05 μA Stop 2 mode, 2.40 μA with RTC
– 84 μA/MHz run mode
– Batch acquisition mode (BAM)
– 4 μs wakeup from Stop mode
– Brown out reset (BOR)
– 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 80 MHz,
MPU, 100DMIPS and DSP instructions
? Performance benchmark
– 1.25 DMIPS/MHz (Drystone 2.1)
– 273.55 CoreMark? (3.42 CoreMark/MHz @
80 MHz)
? Energy benchmark
– 335 ULPMark? CP score
– 104 ULPMark? PP score
STM32L462RET6 Applications
high-speed memory
