STM32L071VBT7 STMicroelectronics Integrated Circuit (Quad Flat Packages) In Stock
STMicroelectronics STM32L071VBT7 is an ultra-low-power 32-bit ARM Cortex-M0+ MCU with 128KB Flash, 20KB SRAM, 6KB EEPROM, and 7-channel DMA running up to 32MHz in a 100-pin LQFP package. Designed for energy-harvesting IoT and wearable applications with sub-µA standby current. Available worldwide with 9+ years estimated product lifetime.
- Manufacturer
- STMicroelectronics
- Package
- Quad Flat Packages
- Pin Count
- 100
- Lifecycle
- ACTIVE
- Datasheet
- STM32L071VBT7 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low-power ARM Cortex-M0+ core running at up to 32MHz with sub-µA stop-mode current for multi-year coin-cell battery life
- 128KB Flash and 6KB embedded EEPROM eliminate external memory chips, reducing BOM cost in IoT sensor nodes
- 7-channel DMA controller enables autonomous peripheral-to-memory transfers without CPU wakeup, further lowering average power
- 100-pin LQFP package with ADC, DMA, and UART peripherals supports complex sensor fusion designs in industrial and wearable form factors
Applications
The STM32L071VBT7 targets energy-constrained IoT sensor nodes, smart utility meters, and environmental monitoring systems that must operate for 5-10 years on a single AA battery or small capacitor-based energy harvester. Its 6KB embedded EEPROM stores calibration data and event logs without external flash, making it ideal for tamper-evident data loggers and medical wearable devices with non-volatile configuration requirements. The 100-pin LQFP package provides enough GPIO and mixed-signal peripherals for industrial remote terminal units combining analog sensing, UART communication, and local display driving in a single MCU.
Specifications
| YTEOL | 9 |
| Has ADC | YES |
| Bit Size | 32 |
| Boundary Scan | NO |
| CPU Family | CORTEX-M0 |
| Clock Frequency-Max | 32MHz |
| DAC Channels | NO |
| DMA Channels | YES |
| JESD-30 Code | S-PQFP-G100 |
| Number of DMA Channels | 7 |
| Number of I/O Lines | 84 |
| Number of Timers | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | FLATPACK, LOW PROFILE, FINE PITCH |
| ROM (words) | 131072 |
| ROM Programmability | FLASH |
| Speed | 32MHz |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 1.65V |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Quad Flat Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | 3A991.a.2 |
| HTS Code | 8542.31.00.25 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for STM32L071VBT7:
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M0 CPU, 32MHz, CMOS, PQFP100
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M0 CPU, 32MHz, CMOS, PQFP100
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M0 CPU, 32MHz, CMOS, PQFP100
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M0 CPU, 32MHz, CMOS, PQFP100
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M0 CPU, 32MHz, CMOS, PQFP100
Frequently Asked Questions
How long can a coin-cell battery power the STM32L071VBT7 in a typical IoT sensor application?
In stop mode the STM32L071VBT7 draws as little as 0.4µA, and in run mode at 32MHz it consumes approximately 3.5mA at 1.8V. A CR2032 coin cell with 225mAh capacity can sustain a sensor node that wakes up every 10 seconds for 50ms of active measurement for over 4 years, making it well suited for wireless environmental monitors and smart building sensors.
Which applications benefit from the STM32L071VBT7's 6KB embedded EEPROM versus using external flash memory?
Embedded 6KB EEPROM on the STM32L071VBT7 eliminates a separate SPI or I2C EEPROM chip, saving at least 3 components and roughly 10mm² of PCB area. Applications such as smart meters storing calibration coefficients, medical wearables logging 30 days of hourly readings at 200 bytes per record, and industrial sensors preserving factory trim values benefit directly from this integrated non-volatile storage at zero extra BOM cost.
How does the STM32L071VBT7's 7-channel DMA help reduce average current in sensor acquisition loops?
The 7-channel DMA on the STM32L071VBT7 allows ADC samples, UART receive data, and SPI sensor reads to be transferred to SRAM autonomously while the Cortex-M0+ core remains in sleep mode drawing under 1mA versus 3.5mA in active mode. For a sensor node sampling 8 channels at 100 samples per second, DMA offload can reduce active CPU time by 60-70%, extending battery life proportionally.
For a compact industrial remote terminal unit, how many GPIO lines does the STM32L071VBT7 in LQFP-100 provide?
The STM32L071VBT7 in the 100-pin LQFP package exposes up to 87 GPIO lines, which can be partitioned as analog ADC inputs, digital I/O, and peripheral-mapped pins for UART, SPI, I2C, and USB. This pin count supports simultaneously driving a 16-bit parallel LCD interface, reading 12 digital sensors, and maintaining 4 UART communication ports in a single-chip industrial controller design.
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STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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