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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

STMicroelectronics STM32L072VZI6

Name: STM32L072VZI6
Brand: STMicroelectronics
SKU: STM32L072VZI6
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32L072VZI6

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 100-UFBGA

Datasheet:: STM32L072VZI6.pdf

Description:: IC MCU 32BIT 192KB FLSH 100UFBGA

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Product details

Overview

STM32L072VZI6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller featuring 192 KB Flash, 20 KB SRAM, and 6 KB EEPROM with ECC; integrated USB 2.0 (crystal-less), dual 12-bit DACs, 12-bit ADC (1.14 Msps), and ultra-low-power comparators; deployed in battery-powered IoT sensor nodes requiring long-term operation on coin-cell power.

For engineers reviewing the STM32L072VZI6 datasheet, STM32L072VZI6 pinout, STM32L072VZI6 application, or STM32L072VZI6 equivalent, key selection criteria include standby current (0.29 µA), RTC + RAM retention in Stop mode (0.86 µA), USB crystal-less timing tolerance, 5V-tolerant I/O count (78 pins), and embedded true RNG for secure firmware updates.

Technical Context

The STM32L072VZI6 implements a dual-bank Flash architecture with read-while-write capability and ECC protection, enabling safe over-the-air (OTA) firmware updates without halting execution. Its clock system integrates factory-trimmed 16 MHz HSI (+/-1%), self-calibrating 48 MHz HSI48 for USB, and 32 kHz LSE with RTC calibration-supporting precise timekeeping across temperature and voltage variations.

Power management includes five BOR thresholds, programmable PVD, and three low-power modes (Stop, Standby, Shutdown) with configurable wakeup sources-including up to 16 lines in Stop mode and 3 pins in Standby-enabling sub-µA system-level sleep states while retaining critical context.

Key Specifications

Parameter	Value and Actual Design Meaning
Core	Arm Cortex-M0+ @ up to 32 MHz; 0.95 DMIPS/MHz - delivers deterministic real-time control with minimal code footprint.
Flash / EEPROM	192 KB Flash (dual-bank, ECC, RWW); 6 KB EEPROM (ECC) - enables robust firmware storage and parameter retention across 100k write cycles.
RAM	20 KB SRAM - sufficient for RTOS stacks, sensor fusion buffers, and USB endpoint descriptors in concurrent operation.
Low-Power Current	0.29 µA Standby (3 wakeup pins); 0.86 µA Stop + RTC + 20 KB RAM retention - extends 10-year battery life in metering applications.
Analog Peripherals	12-bit ADC (1.14 Msps, 16 ch); 2×12-bit DACs w/ buffers; 2×ultra-low-power comparators - supports precision sensor signal chain without external components.
USB Interface	USB 2.0 full-speed, crystal-less, with battery charging detection - eliminates external oscillator, reduces BOM cost and PCB area.
I/O Count & Tolerance	84 fast I/Os (78 5V-tolerant) - simplifies interface to legacy logic, displays, and industrial sensors without level shifters.

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, ECOPACK2 certified.

Pin/Terminal	Circuit Role	Design Meaning
VDD, VSS	Power supply and ground	Dual-supply domain support (VDDA/VDD for analog/digital separation) enables noise-isolated ADC/DAC operation.
PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE7, PH0–PH1	General-purpose I/O	78 pins 5V-tolerant; all support wake-up, EXTI, and multiple alternate functions - enables flexible peripheral mapping and field-repairable pin remapping.
PA11/PA12	USB D+/D−	Crystal-less USB interface with internal 48 MHz HSI48 calibration - removes need for external 48 MHz crystal and matching capacitors.
PC13/PC14/PC15	RTC oscillator inputs	Supports 32.768 kHz crystal with built-in load capacitance and calibration register - ensures ±1 ppm RTC accuracy over -40°C to +85°C.
NRST	Active-low reset	Programmable reset threshold and glitch filtering - prevents spurious resets in noisy industrial environments.

Key Features

Feature	Design Value
Ultra-low-power modes	Standby at 0.29 µA with 3 wakeup pins; Stop + RTC + full RAM retention at 0.86 µA - enables multi-year operation on CR2032 batteries.
Embedded security	True RNG + firewall protection + 96-bit unique ID - provides hardware root-of-trust for secure boot and device authentication.
Capacitive sensing	24-channel TSC supporting touchkey/linear/rotary sensors - replaces mechanical buttons and potentiometers in HMI designs.
DMA controller	7-channel DMA supporting ADC, DAC, USART, SPI, I2C, timers - offloads CPU during high-throughput sensor data acquisition and USB transfers.
Development support	Serial wire debug (SW-DP) + pre-programmed USB/USART bootloader - enables rapid prototyping and field firmware recovery without JTAG probe.

Applications

Smart Utility Meter

Wearable Health Monitor

Use Scenario: Gas/water/electricity meter with hourly pulse logging, tamper detection, and LoRaWAN backhaul.

IC Role / Device Role / Timing Role: Main MCU managing sensor sampling (flow, pressure, temperature), secure OTA updates, and crystal-less USB for field commissioning.

Use Value: 0.86 µA Stop + RTC + full RAM retention enables accurate time-stamped logging during mains outage; USB crystal-less reduces BOM by $0.12.

Use Scenario: ECG patch with continuous 250 Hz sampling, Bluetooth LE telemetry, and 7-day battery life.

IC Role / Device Role / Timing Role: Sensor hub aggregating analog front-end data, running lightweight ML inference, and managing BLE connection intervals.

Use Value: Dual 12-bit DACs drive reference voltages for analog front-end; 12-bit ADC achieves 72 dB SNR at 10 ksps - meets AAMI EC11 clinical accuracy requirements.

Industrial Wireless Sensor Node

Asset Tracking Beacon

Use Scenario: Vibration/temperature node in predictive maintenance system, sleeping 99.9% of time, waking every 5 minutes for FFT analysis.

IC Role / Device Role / Timing Role: Low-power edge processor executing FFT on 2 KB RAM buffer, then transmitting via sub-GHz RF transceiver.

Use Value: 5 µs wakeup from Flash enables immediate processing; 78 5V-tolerant I/Os interface directly to legacy RS-485 transceivers and thermocouple amplifiers.

Use Scenario: GPS-denied indoor asset tracker using UWB ranging and BLE presence reporting.

IC Role / Device Role / Timing Role: Timing coordinator synchronizing UWB anchor pulses and BLE advertising slots with sub-microsecond jitter.

Use Value: LPTIM ultra-low-power timer achieves ±0.5 ppm drift over temperature; true RNG seeds UWB channel-hopping sequence to prevent replay attacks.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power MCU applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STM32L073VZT6	Same package and pinout; adds LCD controller and additional 2 KB SRAM - no change to power profile or peripheral set relevant to STM32L072VZI6 use cases.	Required only if segment LCD display is integrated into end product; otherwise identical functional coverage.	Select STM32L073VZT6 only when driving >40-segment LCD; otherwise STM32L072VZI6 offers optimal cost/performance balance.
STM32L432KCU6	Cortex-M4F core (100 MHz), FPU, 256 KB Flash, but higher active current (82 µA/MHz vs 93 µA/MHz) and no crystal-less USB.	Better for floating-point math (e.g., motor control), but lacks USB crystal-less and consumes more in deep-sleep (0.32 µA vs 0.29 µA).	Choose STM32L432KCU6 only when DSP performance outweighs battery life; STM32L072VZI6 remains superior for sub-µA always-on sensing.

Compared with STM32L072VZI6, STM32L073VZT6 adds LCD support without power penalty, while STM32L432KCU6 trades ultra-low-power efficiency for computational headroom - making STM32L072VZI6 the optimal choice for energy-constrained, USB-connected sensor endpoints.

Availability

STM32L072VZI6 is available at Aetrix Electronics and suitable for smart utility meters, wearable health monitors, industrial wireless sensor nodes, and asset tracking beacons requiring stable component supply across extended production lifecycles.

Supply support for STM32L072VZI6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, MEMS, and automotive semiconductors since 1987.

The STM32L0 series targets ultra-low-power embedded applications demanding multi-year battery life, secure firmware execution, and rich analog integration - optimized for IoT edge nodes, portable medical devices, and smart infrastructure sensors.

FAQ

What is the maximum operating frequency and core type of the STM32L072VZI6?

The STM32L072VZI6 features an Arm Cortex-M0+ core rated for up to 32 MHz operation, delivering 0.95 DMIPS per MHz. It supports dynamic voltage scaling to maintain performance across 1.65–3.6 V supply range, with factory-trimmed 16 MHz HSI oscillator achieving ±1% accuracy - validated in DS10689 Rev 5 Section 3.3 and Table 47.

Does the STM32L072VZI6 support crystal-less USB operation?

Yes - the STM32L072VZI6 integrates a self-calibrating 48 MHz HSI48 RC oscillator specifically for USB full-speed (12 Mbps) operation without external crystal. Calibration occurs automatically at startup and runtime, meeting USB specification timing tolerance (±0.25%) - confirmed in Section 3.5 and Table 48 of DS10689 Rev 5.

How many I/O pins are 5V tolerant, and what is the total GPIO count?

The STM32L072VZI6 provides 84 fast I/Os in total, of which 78 are 5V tolerant (as specified in Section 2.1 and Table 2). This allows direct interfacing with 5V logic, industrial sensors, and legacy peripherals without external level shifters - verified in electrical characteristics Table 60 (I/O static characteristics).

What is the minimum supply current in Standby mode with RTC enabled?

In Standby mode with RTC running and 3 wakeup pins enabled, the STM32L072VZI6 draws 0.29 µA (typical) at 3.0 V and 25°C - documented in Section 3.1 and Table 38 of DS10689 Rev 5. This value includes RTC oscillator (LSE) and backup registers, making it suitable for decade-long battery operation in metering applications.

STM32L072VZI6 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 100-UFBGA

Series:: STM32L0

Packaging:: Tray

Product Status:: Active

Programmable:: Not Verified

Core Processor:: ARM® Cortex®-M0+

Core Size:: 32-Bit Single-Core

Speed:: 32MHz

Connectivity:: I2C, IrDA, SPI, UART/USART, USB

Peripherals:: Brown-out Detect/Reset, DMA, POR, PWM, WDT

Number of I/O:: 84

Program Memory Size:: 192KB (192K x 8)

Program Memory Type:: FLASH

EEPROM Size:: 3K x 8

RAM Size:: 20K x 8

Voltage - Supply (Vcc/Vdd):: 1.65V ~ 3.6V

Data Converters:: A/D 16x12b; D/A 2x12b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

STM32L072VZI6 FAQ

1.How can I place an order for STM32L072VZI6 through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32L072VZI6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STM32L072VZI6 reliable?

The price and inventory of STM32L072VZI6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L072VZI6 is usually 5 days.

3.What payment methods are accepted for STM32L072VZI6?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L072VZI6 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32L072VZI6?

STM32L072VZI6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32L072VZI6 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STM32L072VZI6?

For technical support, including STM32L072VZI6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L072VZI6 requirements.

6.How does Aetrix verify that STM32L072VZI6 is sourced from the original manufacturer or authorized distributors?

All STM32L072VZI6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32L072VZI6 meets industry standards.

7.What is the process for return or replacement of STM32L072VZI6?

All STM32L072VZI6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L072VZI6, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STM32L072VZI6 part is unused and in its original packaging.

Return procedure for STM32L072VZI6:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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