STM32L4A6RGT7 STMicroelectronics 32bit MCU

STM32L4A6RGT7 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.

ECAD Model

Symbol

Footprint

Features

1.71 V to 3.6 V power supply
-40 °C to 85/125 °C temperature range
320 nA in V_BAT 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 (@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 @ 80 MHz)

Energy benchmark

279 ULPMark CP score
80.2 ULPMark PP score

16 x timers: 2 x 16-bit advanced motor-control, 2 x 32-bit and 5 x 16-bit general purpose, 2 x 16-bit basic, 2 x low-power 16-bit timers (available in Stop mode), 2 x watchdogs, SysTick timer

RTC with HW calendar, alarms and calibration

Up to 136 fast I/Os, most 5 V-tolerant, up to 14 I/Os with independent supply down to 1.08 V

Dedicated Chrom-ART Accelerator for enhanced graphic content creation (DMA2D)

8- to 14-bit camera interface up to 32 MHz (black&white) or 10 MHz (color)

Encryption hardware accelerator: AES (128/256-bit key), HASH (SHA-256)

Memories

1 MB Flash, 2 banks read-while-write, proprietary code readout protection
320 KB of SRAM including 64 KB with hardware parity check
External memory interface for static memories supporting SRAM, PSRAM, NOR and NAND memories
Dual-flash Quad SPI memory interface

Applications

STM32L4

Specifications

Core Processor ARM Cortex M4
Speed 80MHz
Operating Temperature -40℃ ~ 105℃ (TA)
Program Memory Type FLASH
RAM Size 320K x 8
Number of I/O 52
Peripherals Brown-out Detect/Reset, DMA, LCD, PWM, WDT
Mounting Type Surface Mount
Oscillator Type Internal
Supplier Device Package 64-LQFP (10x10)
Package / Case 64-LQFP
Core Size 32-Bit
Connectivity CANbus, EBI/EMI, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB OTG
Program Memory Size 1MB (1M x 8)
Data Converters A/D 16x12b; D/A 2x12b
Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.6V