ST STM32L4A6QGI6

ARM® Cortex®-M480MHz1MB（1M x 8）

Overview

The STM32L4A6xG devices are the ultra-low-power microcontrollers based on the high-performance Arm® Cortex®-M4 32-bit RISC core operating at a frequency of up to 80 MHz. The Cortex-M4 core features a Floating point unit (FPU) single precision which supports all Arm® single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) which enhances application security.

The STM32L4A6xG devices embed high-speed memories (1 Mbyte of Flash memory, 320 Kbyte of SRAM), a flexible external memory controller (FSMC) for static memories (for devices with packages of 100 pins and more), a Quad SPI flash memories interface (available on all packages) and 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 STM32L4A6xG devices embed several protection mechanisms for embedded Flash memory and SRAM: readout protection, write protection, proprietary code readout protection and Firewall. The devices offer up to three fast 12-bit ADCs (5 Msps), two comparators, two operational amplifiers, two DAC channels, an internal voltage reference buffer, a low-power RTC, two general-purpose 32-bit timer, two 16-bit PWM timers dedicated to motor control, seven general-purpose 16-bit timers, and two 16-bit low-power timers. The devices support four digital filters for external sigma delta modulators (DFSDM). In addition, up to 24 capacitive sensing channels are available. The devices also embed an integrated LCD driver 8x40 or 4x44, with internal step-up converter. They also feature standard and advanced communication interfaces.

Features

Includes ST state-of-the-art patented

technology

? Ultra-low-power with FlexPowerControl

– 1.71 V to 3.6 V power supply

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

– 320 nA in VBAT mode: supply for RTC and

32x32-bit backup registers

– 25 nA Shutdown mode (5 wakeup pins)

– 108 nA Standby mode (5 wakeup pins)

– 426 nA Standby mode with RTC

– 2.57 μA Stop 2 mode, 2.86 μA Stop 2 with

RTC

– 91 μA/MHz run mode (LDO mode)

– 37 μA/MHz run mode (at 3.3 V SMPS

mode)

– Batch acquisition mode (BAM)

– 5 μs wakeup from Stop mode

– Brown out 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 80 MHz,

MPU, 100 DMIPS and DSP instructions

? Performance benchmark

– 1.25 DMIPS/MHz (Drystone 2.1)

– 273.55 Coremark? (3.42 Coremark/MHz at

80 MHz)

? Energy benchmark

– 279 ULPMark? CP score

– 80.2 ULPMark? PP score

? 16 timers: 2x 16-bit advanced motor-control, 2x

32-bit and 5x 16-bit general purpose, 2x 16-bit

basic, 2x low-power 16-bit timers (available in

Stop mode), 2x watchdogs, SysTick timer

Applications

Embedded SRAM