Model No: STM32L476RET6
STMicroelectronics STM32L476RET6
Manufacturer: STMicroelectronics
SEMICON NO.: STM32L476RET6
Package: 64-LQFP
Stock: In stock
Description: Microcontroller Unit 32Bit 80MHz 512KB FLASH
SEMICON NO.: STM32L476RET6
Package: 64-LQFP
Stock: In stock
Description: Microcontroller Unit 32Bit 80MHz 512KB FLASH
Quantity :
| Mfr | STMicroelectronics |
| Product Family | STM32L4 Series |
| Device Type | 32-bit Microcontroller (MCU) with FPU |
| Core Processor | Arm® Cortex®-M4 |
| Core Size | 32-bit RISC |
| Maximum CPU Speed | 80 MHz |
| Memory Protection | Memory Protection Unit (MPU) |
| Program Memory (Flash) | 512 KB (512K x 8) |
| RAM (SRAM) | 128 KB (128K x 8) |
| Analog Peripherals | ADC: 16-channel, 12-bit ADC; DAC: 2-channel, 12-bit DAC |
| General-Purpose I/O Pins | 51 |
| Supply Voltage | 1.71 V to 3.6 V |
| Operating Temperature | –40°C to +85°C |
| Package | 64-LQFP |
| Mounting Type | Surface Mount |
| Compliance | RoHS Compliant |
The STM32L476RET6 from STMicroelectronics is an ultra-low-power 32-bit ARM Cortex-M4 microcontroller unit with FPU and DSP instructions, running at 80 MHz (100 DMIPS) with 512KB Flash memory and 128KB SRAM in a 64-pin LQFP package. This STM32L4 mcu operates from 1.71V to 3.6V across the -40°C to +85°C temperature range, delivering exceptional power efficiency with 100 µA/MHz active consumption in Run mode and down to 30 nA in Shutdown mode.
The mcu integrates a rich peripheral set including three 5 Msps 12-bit ADCs, two 12-bit DACs, two comparators, two operational amplifiers, an LCD driver (8x40 or 4x44) with internal step-up converter, DFSDM digital filters for external sigma-delta modulators, and up to 24 capacitive sensing channels. Comprehensive connectivity spans USB OTG full-speed, CAN, 3x SPI, 3x I2C, 3x USART, 2x UART, 1x LPUART, 2x SAI, SDMMC, QSPI, SWPMI, and IrDA, secured by hardware AES encryption, True RNG, and firewall code protection for robust embedded designs.
Application Scenarios
The STM32L476RET6 ultra-low-power MCU excels in battery-powered consumer and industrial applications where high performance meets energy efficiency. Typical deployments include fitness trackers and wearable health monitors leveraging the low-power run modes and LCD driver, smart meters using DFSDM for precision sensor interfacing, IoT sensor nodes with USB OTG connectivity for data logging, and portable medical devices requiring 12-bit precision analog front-ends. Industrial applications cover motor control systems utilizing the dedicated PWM timers, industrial sensors with capacitive touch interfaces, and building automation controllers where the 100 µA/MHz efficiency and multiple wake-up sources enable long-term battery operation.
Frequently Asked Questions
Q1: What is the difference between STM32L476RET6 and STM32L476RCT6? The RET6 version operates at 80 MHz across -40°C to +85°C in the 64-pin LQFP package, while the RCT6 is the 64-pin variant with identical core specifications; both share 512KB Flash and 128KB SRAM.
Q2: What low-power modes does this MCU support? Eight modes including Low-power Run (up to 2 MHz), Sleep, Stop 1/2, Standby, and Shutdown, with Standby consuming only 1.0 µA (RTC running) and Shutdown at 30 nA.
Alternative Models
● STM32L496RET6: The upgraded variant with 1MB Flash, 320KB SRAM, Chrom-ART Accelerator, and camera interface for graphics-intensive applications.
● STM32L431RET6: A cost-reduced 256KB Flash version in the same LQFP-64 footprint for memory-lighter designs.
● STM32G474RET6: The STM32G4 alternative with 170 MHz operation, rich timers, and math accelerators for motor control and digital power.
● STM32L433RET6: A lower-power derivative with 256KB Flash and reduced peripheral set for simpler ultra-low-power applications.
The mcu integrates a rich peripheral set including three 5 Msps 12-bit ADCs, two 12-bit DACs, two comparators, two operational amplifiers, an LCD driver (8x40 or 4x44) with internal step-up converter, DFSDM digital filters for external sigma-delta modulators, and up to 24 capacitive sensing channels. Comprehensive connectivity spans USB OTG full-speed, CAN, 3x SPI, 3x I2C, 3x USART, 2x UART, 1x LPUART, 2x SAI, SDMMC, QSPI, SWPMI, and IrDA, secured by hardware AES encryption, True RNG, and firewall code protection for robust embedded designs.
Application Scenarios
The STM32L476RET6 ultra-low-power MCU excels in battery-powered consumer and industrial applications where high performance meets energy efficiency. Typical deployments include fitness trackers and wearable health monitors leveraging the low-power run modes and LCD driver, smart meters using DFSDM for precision sensor interfacing, IoT sensor nodes with USB OTG connectivity for data logging, and portable medical devices requiring 12-bit precision analog front-ends. Industrial applications cover motor control systems utilizing the dedicated PWM timers, industrial sensors with capacitive touch interfaces, and building automation controllers where the 100 µA/MHz efficiency and multiple wake-up sources enable long-term battery operation.
Frequently Asked Questions
Q1: What is the difference between STM32L476RET6 and STM32L476RCT6? The RET6 version operates at 80 MHz across -40°C to +85°C in the 64-pin LQFP package, while the RCT6 is the 64-pin variant with identical core specifications; both share 512KB Flash and 128KB SRAM.
Q2: What low-power modes does this MCU support? Eight modes including Low-power Run (up to 2 MHz), Sleep, Stop 1/2, Standby, and Shutdown, with Standby consuming only 1.0 µA (RTC running) and Shutdown at 30 nA.
Alternative Models
● STM32L496RET6: The upgraded variant with 1MB Flash, 320KB SRAM, Chrom-ART Accelerator, and camera interface for graphics-intensive applications.
● STM32L431RET6: A cost-reduced 256KB Flash version in the same LQFP-64 footprint for memory-lighter designs.
● STM32G474RET6: The STM32G4 alternative with 170 MHz operation, rich timers, and math accelerators for motor control and digital power.
● STM32L433RET6: A lower-power derivative with 256KB Flash and reduced peripheral set for simpler ultra-low-power applications.
