STM32L073VZT3

Microcontrollers Overview

The STM32L073VZT3 is an ultra-low-power microcontroller from the STMicroelectronics STM32L0 series, built on the Arm Cortex-M0+ 32-bit RISC core. It operates at a maximum frequency of 32 MHz and integrates 192 Kbytes of Flash program memory, 6 Kbytes of data EEPROM, and 20 Kbytes of RAM. The device features an extensive range of peripherals including USB 2.0 crystal-less connectivity, an integrated LCD controller with voltage generator, multiple communication interfaces (I2C, SPI, USART, LPUART), and analog components such as a 12-bit ADC with hardware oversampling and two DACs. It supports power supply voltages from 1.8 V to 3.6 V, with operation down to 1.65 V at power down, and is housed in a 100-pin LQFP package.

Microcontrollers Feature Summary

• Integrates a high-performance Arm Cortex-M0+ 32-bit RISC core operating at 32 MHz with a Memory Protection Unit (MPU).
• Features an integrated LCD controller with a built-in voltage generator capable of driving multiplexed LCD displays independent of supply voltage.
• Includes crystal-less USB 2.0 connectivity for simplified design and reduced component count.
• Provides extensive analog capabilities including a 12-bit ADC with hardware oversampling, two DACs, and ultra-low-power comparators.

Microcontrollers Applications

• Gas metering systems requiring low power consumption and LCD display support.
• Heat metering applications utilizing RTC and backup registers for timekeeping.
• IO-Link device applications using expansion boards for industrial digital output control.
• Portable devices benefiting from ultra-low-power modes and crystal-less USB connectivity.

Microcontrollers Procurement Notes

Verify the complete part number against official STMicroelectronics documentation to ensure correct suffix alignment. Confirm that the specific variant matches the required memory size and package type. Check for RoHS compliance status as indicated in the datasheet. Ensure compatibility with the intended operating temperature range and voltage specifications before procurement.

Microcontrollers Selection Notes

Select this model when application requirements include 192 Kbytes of Flash memory and 20 Kbytes of RAM within the STM32L0 series. Choose this variant for designs necessitating a 100-pin LQFP package with 84 I/Os. Consider this MCU for projects requiring integrated LCD driving capabilities and crystal-less USB functionality without external oscillators.

Microcontrollers Part Context

This component belongs to the STM32L073xx family of ultra-low-power microcontrollers. It shares architectural similarities with other members like the STM32L073RZ and STM32L073CB but differs in memory configuration and package type. The VZ suffix indicates the specific pinout and package format, distinguishing it from smaller packages or different memory capacities within the same series.

Microcontrollers Replacement Considerations

Potential substitutes within the STM32L073xx family include STM32L073RZ and STM32L073CB, provided pin compatibility and memory requirements are verified. Cross-referencing datasheets is essential to confirm peripheral availability and package dimensions match the existing design constraints.