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

STMicroelectronics STM32L073VZI6TR

Name: STM32L073VZI6TR
Brand: STMicroelectronics
SKU: STM32L073VZI6TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32L073VZI6TR

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 100-UFBGA

Datasheet:: STM32L073VZI6TR.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STM32L073VZI6TR from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in UFBGA100 (7×7 mm) package, featuring 192 KB Flash with ECC, 20 KB SRAM, 6 KB EEPROM, USB 2.0 crystal-less interface, and integrated LCD driver supporting up to 4×52 segments. It operates from 1.65 V to 3.6 V across –40 °C to +125 °C and delivers 0.29 µA Standby mode current with 3 wakeup pins - deployed in battery-powered industrial sensors and portable medical monitors.

For engineers reviewing the STM32L073VZI6TR datasheet, STM32L073VZI6TR pinout, STM32L073VZI6TR application, or STM32L073VZI6TR equivalent, key selection criteria include verified low-power mode timing (e.g., 5 µs wakeup from Flash), dual 12-bit DAC output buffers (down to 1.8 V), 12-bit ADC at 1.14 Msps with 16 channels, and USB crystal-less LPM support for energy-constrained embedded systems.

Technical Context

This MCU integrates a Cortex-M0+ core with MPU, running at up to 32 MHz with 0.95 DMIPS/MHz performance, supported by multiple clock sources: HSI16 (±1%), HSI48 (self-calibrated for USB), LSE (32 kHz RTC), and MSI (65 kHz–4.2 MHz). Its interconnect matrix enables concurrent peripheral access without bus contention.

Ultra-low-power operation is achieved via five dynamic low-power modes (Run, Sleep, Low-power Run/Sleep, Stop, Standby), each with configurable retention (e.g., 20 KB RAM + RTC in Stop mode at 0.86 µA), programmable voltage detector (PVD), and brownout reset (BOR) with five thresholds - all validated across full temperature and voltage range.

Key Specifications

Parameter	Value and Actual Design Meaning
Core	Arm Cortex-M0+ with MPU, 32 MHz max, 0.95 DMIPS/MHz - enables deterministic real-time control in resource-constrained firmware.
Memory	192 KB Flash (ECC, 2-bank RWW), 20 KB SRAM, 6 KB EEPROM (ECC) - supports robust firmware updates and nonvolatile data logging without external memory.
ADC	12-bit, 1.14 Msps, 16-channel, operational down to 1.65 V - captures high-fidelity analog sensor signals in battery-voltage-declining environments.
DAC	2 × 12-bit channels with output buffers, functional down to 1.8 V - drives analog actuators or reference voltages directly from MCU pins.
USB	USB 2.0 crystal-less, battery charging detection, LPM - eliminates external crystal cost and board space while enabling portable device charging negotiation.
Low-power modes	0.29 µA Standby (3 wakeup pins), 0.43 µA Stop (16 wakeup lines), 0.86 µA Stop+RTC+20KB RAM retention - extends coin-cell or Li-SOCl₂ battery life to multi-year deployments.
LCD driver	Supports up to 4×52 or 8×48 segments with on-board step-up converter and contrast adjustment - enables direct drive of segmented displays without external bias IC.

Pinout & Package

STM32L073VZI6TR uses a 100-pin UFBGA (7×7 mm, 0.5 mm pitch) package with 84 fast I/Os (78 5V-tolerant), including dedicated LCD segment/common pins, USB D+/D−, and multiple wakeup-capable GPIOs. Pin functions are defined per DS10685 Rev 7 Section 4.

Pin/Terminal	Circuit Role	Design Meaning
VDD, VSS	Power supply and ground	Core and I/O domain supply pins; decoupling required per layout guidelines to maintain <0.3 µA standby leakage.
PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15, PH0–PH1	General-purpose I/O	78 pins 5V-tolerant; support multiple alternate functions including USART, SPI, I²C, timers, and capacitive sensing inputs.
PC13–PC15	RTC oscillator pins	Connect external 32.768 kHz crystal; calibrated RTC operation enabled with ±20 ppm accuracy over –40°C to +85°C.
PA11/PA12	USB D+/D−	Crystal-less USB 2.0 interface; internal 48 MHz RC oscillator calibrated to ±0.25% for full-speed USB compliance.
VLCD	LCD voltage supply	Output of internal step-up converter; adjustable contrast via software-controlled voltage scaling for segmented LCD panels.

Key Features

Feature	Design Value
Ultra-low-power BOR	5 selectable thresholds (1.6–2.8 V) ensure reliable reset during battery sag without external supervisor IC.
True RNG & firewall	Hardware entropy source and memory protection unit enable secure boot and cryptographic key generation in certified firmware stacks.
Capacitive sensing	24-channel TSC supports touchkey, linear, and rotary sensors - eliminates mechanical buttons and reduces BOM in HMI designs.
DMA controller	7-channel DMA with peripheral scatter-gather support offloads CPU during ADC conversions, SPI transfers, and LCD refresh cycles.
Serial wire debug	SW-DP interface enables full JTAG-style debugging and flash programming without dedicated debug header footprint.

Applications

Smart Utility Meter

Portable ECG Monitor

Use Scenario: Battery-operated gas/water meter with pulse counting, LCD display, and RF telemetry.

IC Role / Device Role / Timing Role: Main system controller managing metrology ADC sampling, LCD segment driving, USB-based firmware update, and RTC-corrected timestamping.

Use Value: 0.29 µA Standby current extends 10-year battery life; integrated EEPROM stores calibration and usage logs without external NV memory.

Use Scenario: Handheld clinical-grade ECG device powered by single CR2032 cell.

IC Role / Device Role / Timing Role: Signal acquisition controller performing 1.14 Msps ADC sampling, real-time QRS detection, dual DAC-based lead-off detection, and LCD waveform rendering.

Use Value: Dual 12-bit DACs generate precise reference voltages for electrode bias; 125 °C rating ensures reliability in sterilized enclosures.

Industrial Wireless Sensor Node

Low-Power HVAC Controller

Use Scenario: LoRaWAN-enabled temperature/humidity node deployed in unheated warehouses.

IC Role / Device Role / Timing Role: Sensor fusion hub aggregating I²C HTS221 data, executing CRC-protected OTA updates, and scheduling periodic RF transmissions via LPTIM-triggered wakeups.

Use Value: 0.43 µA Stop mode with 16 wakeup lines enables event-driven operation; 24-channel TSC supports local touch interface for field commissioning.

Use Scenario: DIN-rail mounted HVAC actuator with local LCD, relay control, and Modbus RTU communication.

IC Role / Device Role / Timing Role: Real-time actuator manager using 4× USARTs (2 ISO 7816-capable) for legacy building automation protocols and hardware watchdogs for fail-safe valve positioning.

Use Value: 4× USARTs eliminate external level shifters; independent/window watchdogs meet SIL-2 functional safety requirements for thermal cutoff logic.

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
STM32L072VZT6	Same package and pinout, but lacks USB and LCD controller; 128 KB Flash, no DAC.	Suitable for non-USB, non-display sensor nodes where cost reduction outweighs feature loss.	Select when USB/LCD/DAC are unused - saves $0.35/unit at 10k volume without redesign.
STM32L433RCT6	Cortex-M4F core, 80 MHz, 256 KB Flash, 64 KB SRAM, but higher active current (81 µA/MHz vs 93 µA/MHz) and no crystal-less USB.	Better for DSP-intensive tasks (e.g., FFT-based vibration analysis), but requires external USB crystal and increases standby power.	Choose only if floating-point math or larger code footprint justifies 2.5× higher active power and added BOM complexity.

Compared with STM32L073VZI6TR, STM32L072VZT6 trades USB/LCD/DAC for lower cost in static sensor roles, while STM32L433RCT6 adds M4F performance at the expense of verified sub-µA low-power operation and crystal-less USB integration - making STM32L073VZI6TR optimal for battery-critical display+USB edge devices.

Availability

STM32L073VZI6TR is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, industrial wireless sensor nodes, and low-power HVAC controllers requiring stable component supply across extended product lifecycles.

Supply support for STM32L073VZI6TR 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 management ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The STM32L0 series targets ultra-low-power embedded applications demanding multi-year battery life, wide temperature operation, and integrated peripherals - specifically optimized for metering, wearables, and IoT endpoints where energy efficiency defines system viability.

FAQ

What is the maximum operating frequency and core type of STM32L073VZI6TR?

The STM32L073VZI6TR features an Arm Cortex-M0+ core with MPU, operating at up to 32 MHz maximum frequency. It delivers 0.95 DMIPS/MHz performance and supports dynamic voltage scaling to optimize power versus speed. The core is factory-trimmed for HSI16 accuracy (±1%) and includes hardware divide and single-cycle multiply instructions.

Does STM32L073VZI6TR support crystal-less USB operation?

Yes - it integrates a self-calibrating 48 MHz RC oscillator (HSI48) trimmed using the USB SOF signal, enabling full-speed (12 Mbps) crystal-less USB 2.0 operation. This eliminates the need for an external 48 MHz crystal or oscillator, reducing BOM cost and PCB area while maintaining USB compliance per DS10685 Rev 7 Section 3.18.5.

How many low-power modes does STM32L073VZI6TR support, and what are their typical currents?

It supports five low-power modes: Run (93 µA/MHz), Sleep (2.3 µA), Low-power Run (6.5 µA), Stop (0.43 µA with 16 wakeup lines), and Standby (0.29 µA with 3 wakeup pins). All values are measured at 3.0 V and 25 °C per DS10685 Rev 7 Table 37–38, with RTC+20 KB RAM retention achievable in Stop mode at 0.86 µA.

What LCD capabilities does STM32L073VZI6TR provide?

The MCU integrates a hardware LCD controller supporting up to 4×52 or 8×48 segments, with on-chip step-up converter, software-adjustable contrast, blinking mode, and charge pump regulation. It drives common/segment pins directly without external bias circuitry and operates down to 1.8 V supply, validated per DS10685 Rev 7 Section 3.11 and Table 21.

STM32L073VZI6TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 100-UFBGA

Series:: STM32L0

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Core Processor:: ARM® Cortex®-M0+

Core Size:: 32-Bit Single-Core

Speed:: 32MHz

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

Peripherals:: Brown-out Detect/Reset, DMA, I2S, LCD, POR, PWM, WDT

Number of I/O:: 84

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

Program Memory Type:: FLASH

EEPROM Size:: 6K x 8

RAM Size:: 20K x 8

Voltage - Supply (Vcc/Vdd):: 1.8V ~ 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:

STM32L073VZI6TR FAQ

1.How can I place an order for STM32L073VZI6TR through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32L073VZI6TR 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 STM32L073VZI6TR reliable?

The price and inventory of STM32L073VZI6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L073VZI6TR is usually 5 days.

3.What payment methods are accepted for STM32L073VZI6TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L073VZI6TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32L073VZI6TR?

STM32L073VZI6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32L073VZI6TR 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 STM32L073VZI6TR?

For technical support, including STM32L073VZI6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L073VZI6TR requirements.

6.How does Aetrix verify that STM32L073VZI6TR is sourced from the original manufacturer or authorized distributors?

All STM32L073VZI6TR 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 STM32L073VZI6TR meets industry standards.

7.What is the process for return or replacement of STM32L073VZI6TR?

All STM32L073VZI6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L073VZI6TR, 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 STM32L073VZI6TR part is unused and in its original packaging.

Return procedure for STM32L073VZI6TR:

1.Submit a request within 90 days.

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

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