The STM32L471VET6 from STMicroelectronics is an ultra-low-power 32-bit MCU from the STM32L4 family, based on an Arm Cortex-M4 core operating at up to 80MHz. The core integrates a single-precision FPU, DSP instruction set, Memory Protection Unit, and ART Accelerator for high-performance embedded control and signal-processing applications.
The exact STM32L471VE configuration provides 512KB of embedded Flash memory. The STM32L471 family provides up to 128KB of SRAM, including 32KB with hardware parity checking, together with Flash read/write protection, proprietary code readout protection, and Firewall mechanisms.
For the 100-pin package, an external static-memory interface supports SRAM, PSRAM, NOR, and NAND memories, while an integrated Quad-SPI interface provides high-speed connectivity to external Flash memory.
Analog resources include up to three 12-bit ADCs operating at up to 5Msps, hardware oversampling up to 16-bit resolution, two 12-bit DAC channels, two operational amplifiers with integrated PGA, and two ultra-low-power comparators.
The device also integrates four digital filters for external sigma-delta modulators (DFSDM), making it suitable for high-resolution sensing, measurement, and digital audio signal acquisition.
Communication peripherals include three I²C interfaces, three SPI interfaces, multiple USART/UART/LPUART interfaces, two SAI interfaces, CAN 2.0B, SDMMC, and SWPMI. I²C supports Fast Mode Plus up to 1Mbit/s with SMBus/PMBus compatibility.
System resources include multiple 16-bit and 32-bit timers, low-power timers, watchdogs, a 14-channel DMA controller, true random-number generator, CRC calculation unit, and 96-bit unique device ID. SWD, JTAG, and Embedded Trace support are also provided.
The STM32L471VET6 operates from a 1.71V-to-3.6V supply and supports multiple ultra-low-power modes. ST specifies typical consumption as low as 30nA in Shutdown, 120nA in Standby, 1.1µA in Stop 2, and approximately 100µA/MHz in Run mode, with approximately 4µs wake-up from Stop mode under specified conditions.
The exact STM32L471VET6 uses an LQFP-100 package measuring 14 × 14 × 1.4mm, is specified for an industrial −40°C to +85°C operating-temperature range, and is supplied in tray packaging. It is ECOPACK2 compliant.
ST currently classifies the exact STM32L471VET6 as Active and in volume production, with a 10-year longevity commitment.
Key Specifications
- Manufacturer: STMicroelectronics
- Manufacturer Part Number: STM32L471VET6
- Family: STM32L4 / STM32L471
- Device Type: Ultra-Low-Power 32-Bit MCU
- CPU Core: Arm Cortex-M4
- Maximum CPU Frequency: 80MHz
- FPU: Single Precision
- DSP Instructions: Yes
- MPU: Yes
- Flash Memory: 512KB
- SRAM: Up to 128KB
- Parity-Protected SRAM: 32KB
- External Memory Interface: Yes
- Quad-SPI: Yes
- Supply Voltage: 1.71V to 3.6V
- Typical Shutdown Current: 30nA
- Typical Standby Current: 120nA
- Typical Stop 2 Current: 1.1µA
- Typical Run Current: 100µA/MHz
- Stop-Mode Wake-Up: Approximately 4µs
- ADC: Up to 3 × 12-Bit
- ADC Speed: Up to 5Msps
- Hardware Oversampling: Up to 16-Bit
- DAC: 2 × 12-Bit
- Operational Amplifiers: 2
- Comparators: 2
- DFSDM Digital Filters: 4
- Capacitive Sensing: Up to 24 Channels
- I²C: 3
- SPI: 3
- USART / UART / LPUART: Supported
- SAI: 2
- CAN: CAN 2.0B
- CAN FD: No
- SDMMC: Yes
- SWPMI: Yes
- DMA: 14 Channels
- True RNG: Yes
- CRC: Yes
- Unique ID: 96-Bit
- Package: LQFP-100
- Package Size: 14 × 14 × 1.4mm
- Grade: Industrial
- Operating Temperature: −40°C to +85°C
- Packing Type: Tray
- RoHS Grade: ECOPACK2
- Product Status: Active / Volume Production
- Longevity Commitment: 10 Years
Typical Applications
Suitable for industrial control, data acquisition, smart meters, sensor nodes, portable instrumentation, battery-powered devices, medical electronics, CAN-network nodes, digital audio and measurement equipment, SD-card data logging, and low-power IoT systems.
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