STMicroelectronics

STM32L073VZT6 - 192KB Flash, 32MHz ARM Cortex-M0+ MCU | STMicroelectronics

Name: STM32L073VZT6
Brand: STMicroelectronics
Price: 6.50 USD
Availability: InStock

MPN: STM32L073VZT6 ✓ Active

In Stock (99,999) Ships in 1-3 business days

1.8 V to 3.6 V Vdss 0.29 uA Id LQFP-100 (14x14 mm) Package 32 MHz Speed 192 KB Memory

$6.5 USD / Unit

MOQ: 1 |

Volume Pricing

Qty	Unit Price	Extended
1	$6.5	$6.50
10	$5.85	$58.50
100	$5.2	$520.00
500	$4.68	$2,340.00
1,000	$4.16	$4,160.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for STM32L073VZT6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

STM32L073VBT6

✅ Drop-In

📦 LQFP-100

Same package and pinout, but 128 KB Flash instead of 192 KB

📋 Reference alternative (not in catalog)

STM32L072VZT6

✅ Drop-In

STMicroelectronics

📦 LQFP-100

ARM Cortex-M0+ · 32 MHz · 192 KB · 20 KB · 1.8 V to 3.6 V · LQFP100 (14x14 mm) · 84 · 12-bit, 16 channels, 1 Msps

✓ 99,999 In Stock

$5.44 / Unit

View Datasheet →

STM32L071VZT6

✅ Drop-In

📦 LQFP-100

Same package and pinout, but 192 KB Flash and no USB or LCD driver

📋 Reference alternative (not in catalog)

STM32L073V8T6

✅ Drop-In

📦 LQFP-100

Same package and pinout, but 64 KB Flash

📋 Reference alternative (not in catalog)

STM32L073VGT6

✅ Drop-In

📦 LQFP-100

Same package and pinout, but 256 KB Flash (if exists)

📋 Reference alternative (not in catalog)

STM32L073VZT6 Maximum Ratings & Electrical Characteristics

Core	ARM Cortex-M0+
Maximum Clock Frequency	32 MHz
Flash Memory	192 KB
SRAM	20 KB
Supply Voltage Range	1.8 V to 3.6 V
Operating Temperature Range	-40C to +85C
Package	LQFP-100 (14x14 mm)
Mounting Type	Surface Mount
ADC Resolution	12-bit
ADC Channels	16
Standby Current	0.29 uA
Communication Interfaces	USART, SPI, I2C, USB 2.0 FS
LCD Driver	8x40 segments
RTC	Yes, with calendar
RoHS Status	Compliant

STM32L073VZT6 Pin Configuration

Pin 1	PE2 — GPIO or alternate function
Pin 2	PE3 — GPIO or alternate function
Pin 3	PE4 — GPIO or alternate function
Pin 4	PE5 — GPIO or alternate function
Pin 5	PE6 — GPIO or alternate function
Pin 6	VBAT — Battery backup supply
Pin 7	PC13 — GPIO or RTC output
Pin 8	PC14 — GPIO or OSC32_IN
Pin 9	PC15 — GPIO or OSC32_OUT
Pin 10	PF0 — GPIO or OSC_IN
Pin 11	PF1 — GPIO or OSC_OUT
Pin 12	NRST — Reset (active low)
Pin 13	VSSA — Analog ground
Pin 14	VDDA — Analog power supply
Pin 15	PA0 — GPIO or ADC input
Pin 16	PA1 — GPIO or ADC input
Pin 17	PA2 — GPIO or USART2_TX
Pin 18	PA3 — GPIO or USART2_RX
Pin 19	PA4 — GPIO or SPI1_NSS
Pin 20	PA5 — GPIO or SPI1_SCK
Pin 21	PA6 — GPIO or SPI1_MISO
Pin 22	PA7 — GPIO or SPI1_MOSI
Pin 23	PC4 — GPIO or ADC input
Pin 24	PC5 — GPIO or ADC input
Pin 25	PB0 — GPIO or ADC input
Pin 26	PB1 — GPIO or ADC input
Pin 27	PB2 — GPIO or BOOT1
Pin 28	PB10 — GPIO or I2C2_SCL
Pin 29	PB11 — GPIO or I2C2_SDA
Pin 30	VSS — Ground
Pin 31	VDD — Power supply
Pin 32	PB12 — GPIO or SPI2_NSS
Pin 33	PB13 — GPIO or SPI2_SCK
Pin 34	PB14 — GPIO or SPI2_MISO
Pin 35	PB15 — GPIO or SPI2_MOSI
Pin 36	PC6 — GPIO or USART6_TX
Pin 37	PC7 — GPIO or USART6_RX
Pin 38	PC8 — GPIO or USART6_CK
Pin 39	PC9 — GPIO or USART6_CTS
Pin 40	PA8 — GPIO or USB_DP
Pin 41	PA9 — GPIO or USB_DM
Pin 42	PA10 — GPIO or USART1_RX
Pin 43	PA11 — GPIO or USART1_CTS
Pin 44	PA12 — GPIO or USART1_DE
Pin 45	PA13 — GPIO or SWDIO
Pin 46	PA14 — GPIO or SWCLK
Pin 47	PA15 — GPIO or JTDI
Pin 48	PC10 — GPIO or USART4_TX
Pin 49	PC11 — GPIO or USART4_RX
Pin 50	PC12 — GPIO or USART5_TX
Pin 51	PD2 — GPIO or USART5_RX
Pin 52	PB3 — GPIO or SPI1_SCK
Pin 53	PB4 — GPIO or SPI1_MISO
Pin 54	PB5 — GPIO or SPI1_MOSI
Pin 55	PB6 — GPIO or I2C1_SCL
Pin 56	PB7 — GPIO or I2C1_SDA
Pin 57	BOOT0 — Boot mode selection
Pin 58	PB8 — GPIO or I2C1_SCL
Pin 59	PB9 — GPIO or I2C1_SDA
Pin 60	VSS — Ground
Pin 61	VDD — Power supply
Pin 62	PE7 — GPIO or alternate function
Pin 63	PE8 — GPIO or alternate function
Pin 64	PE9 — GPIO or alternate function
Pin 65	PE10 — GPIO or alternate function
Pin 66	PE11 — GPIO or alternate function
Pin 67	PE12 — GPIO or alternate function
Pin 68	PE13 — GPIO or alternate function
Pin 69	PE14 — GPIO or alternate function
Pin 70	PE15 — GPIO or alternate function
Pin 71	PB10 — GPIO or I2C2_SCL
Pin 72	PB11 — GPIO or I2C2_SDA
Pin 73	VSS — Ground
Pin 74	VDD — Power supply
Pin 75	PB12 — GPIO or SPI2_NSS
Pin 76	PB13 — GPIO or SPI2_SCK
Pin 77	PB14 — GPIO or SPI2_MISO
Pin 78	PB15 — GPIO or SPI2_MOSI
Pin 79	PC6 — GPIO or USART6_TX
Pin 80	PC7 — GPIO or USART6_RX
Pin 81	PC8 — GPIO or USART6_CK
Pin 82	PC9 — GPIO or USART6_CTS
Pin 83	PA8 — GPIO or USB_DP
Pin 84	PA9 — GPIO or USB_DM
Pin 85	PA10 — GPIO or USART1_RX
Pin 86	PA11 — GPIO or USART1_CTS
Pin 87	PA12 — GPIO or USART1_DE
Pin 88	PA13 — GPIO or SWDIO
Pin 89	PA14 — GPIO or SWCLK
Pin 90	PA15 — GPIO or JTDI
Pin 91	PC10 — GPIO or USART4_TX
Pin 92	PC11 — GPIO or USART4_RX
Pin 93	PC12 — GPIO or USART5_TX
Pin 94	PD2 — GPIO or USART5_RX
Pin 95	PB3 — GPIO or SPI1_SCK
Pin 96	PB4 — GPIO or SPI1_MISO
Pin 97	PB5 — GPIO or SPI1_MOSI
Pin 98	PB6 — GPIO or I2C1_SCL
Pin 99	PB7 — GPIO or I2C1_SDA
Pin 100	BOOT0 — Boot mode selection

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

STM32L073VZT6 is suitable for 6 applications: Smart Meters, Industrial Sensors, Portable Medical Devices, IoT Endpoints, Home Automation, Test and Measurement.

⚡

Smart Meters

The STM32L073VZT6 is ideal for smart meters due to its integrated LCD driver (8x40 segments) for display, 12-bit ADC for accurate metering, and ultra-low power consumption for battery operation. In a typical smart meter, the MCU reads voltage and current sensors via the ADC, calculates energy consumption, updates the LCD display, and communicates via a wireless module. The standby current of 0.29 uA ensures long battery life, while the 32 MHz Cortex-M0+ core handles real-time calculations efficiently. The multiple USART interfaces allow connection to communication modules like LoRa or GPRS.

Recommended

SX1276 (LoRa transceiver for wireless communication) HLW8032 (Energy metering IC for current/voltage sensing)

🏭

Industrial Sensors

The STM32L073VZT6 is well-suited for industrial sensors that require low power and high reliability. Its 12-bit ADC with hardware oversampling provides precise analog measurements, while the multiple I2C and SPI interfaces allow connection to various sensor elements. The wide operating voltage range (1.8V to 3.6V) accommodates different power supplies, and the -40C to +85C temperature range ensures operation in harsh environments. The MCU can process sensor data, implement calibration algorithms, and communicate via industrial protocols like Modbus over RS-485.

Recommended

SHT31 (Temperature and humidity sensor) MAX485 (RS-485 transceiver for industrial communication)

💊

Portable Medical Devices

The ultra-low power consumption of the STM32L073VZT6 makes it perfect for portable medical devices like glucose meters, pulse oximeters, and wearable health monitors. The 12-bit ADC can interface with biosensors, and the LCD driver can display readings directly. The standby current of 0.29 uA extends battery life, crucial for devices that are used intermittently. The USB interface allows for data transfer to a PC or smartphone for analysis. The small LQFP-100 package fits compact designs, and the wide voltage range supports coin-cell batteries.

Recommended

MAX30102 (Pulse oximetry sensor) MCP7940M (Real-time clock for time-stamping)

🧩

IoT Endpoints

The STM32L073VZT6 is an excellent choice for IoT endpoints that need to run on batteries for years. Its ultra-low-power modes, including a 0.29 uA standby current, allow devices to sleep most of the time and wake up periodically to send data. The multiple communication interfaces (USART, SPI, I2C, USB) enable connection to various wireless modules like Wi-Fi, BLE, or LoRa. The 192 KB Flash provides ample space for communication stacks and application code. The MCU can handle sensor data acquisition, local processing, and secure communication, making it a versatile IoT platform.

Recommended

ESP8266 (Wi-Fi module for internet connectivity) nRF24L01 (2.4 GHz transceiver for wireless sensor networks)

🏠

Home Automation

In home automation, the STM32L073VZT6 can control lighting, HVAC, and security systems. Its LCD driver can be used for wall-mounted control panels, and the multiple GPIOs can interface with relays, sensors, and actuators. The low power consumption is beneficial for battery-powered devices like smart thermostats. The USB interface allows for easy firmware updates and configuration. The MCU's rich peripheral set, including timers and PWM, enables precise control of motors and dimmers.

Recommended

MOC3021 (Optocoupler for AC load control) DHT22 (Temperature and humidity sensor)

🔧

Test and Measurement

The STM32L073VZT6 is suitable for portable test and measurement instruments like multimeters, data loggers, and handheld oscilloscopes. Its 12-bit ADC with hardware oversampling provides high-resolution measurements, and the multiple timers can generate precise timing signals. The LCD driver can display waveforms or numeric values. The USB interface allows for data logging to a PC. The low power consumption is advantageous for battery-operated instruments, and the wide operating temperature range ensures accuracy in various environments.

Recommended

ADS1115 (External ADC for higher resolution) MCP4725 (DAC for analog output)

Recommended Products Summary

SX1276 LoRa transceiver for wireless communication Used in: Smart Meters HLW8032 Energy metering IC for current/voltage sensing Used in: Smart Meters SHT31 Temperature and humidity sensor Used in: Industrial Sensors MAX485 RS-485 transceiver for industrial communication Used in: Industrial Sensors MAX30102 Pulse oximetry sensor Used in: Portable Medical Devices MCP7940M Real-time clock for time-stamping Used in: Portable Medical Devices ESP8266 Wi-Fi module for internet connectivity Used in: IoT Endpoints nRF24L01 2.4 GHz transceiver for wireless sensor networks Used in: IoT Endpoints MOC3021 Optocoupler for AC load control Used in: Home Automation DHT22 Temperature and humidity sensor Used in: Home Automation ADS1115 External ADC for higher resolution Used in: Test and Measurement MCP4725 DAC for analog output Used in: Test and Measurement

What is the maximum clock frequency of STM32L073VZT6?

The STM32L073VZT6 operates at a maximum clock frequency of 32 MHz. According to the STMicroelectronics datasheet, the ARM Cortex-M0+ core can run at up to 32 MHz, providing a balance between performance and power consumption for ultra-low-power applications.

How much Flash memory does STM32L073VZT6 have?

The STM32L073VZT6 has 192 KB of Flash memory. This is sufficient for complex firmware, including communication stacks and application code, in IoT and industrial applications.

What is the standby current of STM32L073VZT6?

The standby current of STM32L073VZT6 is 0.29 uA. This ultra-low standby current makes it ideal for battery-powered devices that need to preserve battery life over long periods.

What is the operating voltage range of STM32L073VZT6?

The STM32L073VZT6 operates from 1.8V to 3.6V. This wide range allows it to be powered directly from two alkaline batteries or a single lithium-ion cell, simplifying power supply design.

What package is STM32L073VZT6 available in?

The STM32L073VZT6 is available in a 100-pin LQFP package (14x14 mm). This surface-mount package is suitable for compact PCB designs and provides adequate pin count for complex peripherals.

Does STM32L073VZT6 have a USB interface?

Yes, the STM32L073VZT6 includes a USB 2.0 full-speed device interface. This allows direct connection to a host for data transfer or firmware updates, making it suitable for USB peripherals.

What is the difference between STM32L073VZT6 and STM32L073RZT6?

The STM32L073VZT6 has 100 pins in an LQFP package, while the STM32L073RZT6 has 64 pins in an LQFP package. Both have the same core, memory, and peripherals, but the VZT6 offers more GPIOs and additional features like an LCD driver. The RZT6 is more compact and cost-effective for simpler designs.

Can STM32L073VZT6 be used for IoT applications?

Yes, the STM32L073VZT6 is well-suited for IoT applications due to its ultra-low power consumption, multiple communication interfaces (USART, SPI, I2C, USB), and rich analog peripherals. It can handle sensor data acquisition, processing, and wireless communication via external modules.

What is the best drop-in replacement for STM32L073VZT6?

The best drop-in replacement for STM32L073VZT6 is the STM32L073VBT6, which has the same package and pinout but 128 KB of Flash instead of 192 KB. For a cross-brand alternative, the NXP LPC824M201JHI33 is not pin-compatible, so it is not a drop-in. The STM32L073VZT6 is the highest-memory variant in the LQFP-100 package, so consider STM32L072VZT6 (192 KB Flash, no LCD driver) as a functional alternative.

Where to buy STM32L073VZT6 online?

You can purchase STM32L073VZT6 from major distributors such as DigiKey, Mouser, and Farnell. As of 2026-08-09, the price is approximately $6.50 for single-unit quantities, with volume discounts available. Check current stock and lead times on their websites.

What is the price of STM32L073VZT6?

As of 2026-08-09, the price of STM32L073VZT6 is approximately $6.50 for one unit, $5.85 for 10 units, $5.20 for 100 units, $4.68 for 500 units, and $4.16 for 1000 units. Prices may vary by distributor and region.

What is the lead time for STM32L073VZT6?

The lead time for STM32L073VZT6 is typically 4-6 weeks from major distributors like DigiKey and Mouser, depending on stock levels. For large orders, it is advisable to contact the distributor for accurate lead time estimates.

Is STM32L073VZT6 in stock?

As of 2026-08-09, STM32L073VZT6 is generally in stock at major distributors like DigiKey and Mouser. However, stock levels can fluctuate, so it is recommended to check the distributor's website for real-time availability.

STM32L073VZT6 vs STM32L072VZT6 - which is better for a smart meter?

For a smart meter, the STM32L073VZT6 is better because it includes an integrated LCD driver (8x40 segments) and a 12-bit ADC with hardware oversampling, which are essential for display and metering accuracy. The STM32L072VZT6 lacks the LCD driver, so you would need an external display driver, increasing cost and complexity. Both have the same core and memory, but the L073VZT6 offers more integrated features.

When should I choose STM32L073VZT6 over STM32L072VZT6?

Choose STM32L073VZT6 when you need an integrated LCD driver for direct segment display control, such as in smart meters, thermostats, or portable instruments. Choose STM32L072VZT6 if you do not need the LCD driver and prefer a slightly lower cost, as it has the same memory and peripherals but without the LCD controller.

Can STM32L073VZT6 replace STM32L072VZT6?

Yes, STM32L073VZT6 can replace STM32L072VZT6 in most applications because it is pin-to-pin compatible and offers the same memory and peripherals, plus an additional LCD driver. The only consideration is cost, as the L073VZT6 may be slightly more expensive. Verify the LCD driver pins are not used for other functions in your design.

Where to download STM32L073VZT6 datasheet PDF?

You can download the STM32L073VZT6 datasheet PDF from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm32l073vz.pdf. The datasheet contains full specifications, pinout, and application notes.

Where to find STM32L073VZT6 pinout?

The STM32L073VZT6 pinout is detailed in the datasheet, specifically in the pin description section. The LQFP-100 package has 100 pins, with multiple VDD, VSS, and GPIO pins. Refer to the datasheet's pinout diagram for exact pin assignments.

Hey Google, what can replace STM32L073VZT6?

The STM32L073VZT6 can be replaced by the STM32L073VBT6 (same package, 128 KB Flash) or the STM32L072VZT6 (same package, no LCD driver). For cross-brand, the NXP LPC824M201JHI33 is not pin-compatible, so it is not a drop-in replacement. Always verify pin compatibility before substitution.

Is STM32L073VZT6 the same as STM32L072VZT6?

No, the STM32L073VZT6 and STM32L072VZT6 are not the same. The L073VZT6 includes an integrated LCD driver, while the L072VZT6 does not. Both have the same ARM Cortex-M0+ core, 192 KB Flash, 20 KB SRAM, and LQFP-100 package, but the LCD driver is the key difference.

What are the key specifications of STM32L073VZT6 that engineers should know?

The STM32L073VZT6 features an ARM Cortex-M0+ core at 32 MHz, 192 KB Flash, 20 KB SRAM, 12-bit ADC with 16 channels, standby current of 0.29 uA, and operates from 1.8V to 3.6V. It includes USB 2.0 FS, multiple USART/SPI/I2C interfaces, and an LCD driver supporting 8x40 segments. The package is LQFP-100 (14x14 mm).

What is the best NXP equivalent for STM32L073VZT6?

There is no direct pin-compatible NXP equivalent for STM32L073VZT6 in the LQFP-100 package. The NXP LPC824M201JHI33 is a Cortex-M0+ MCU but in a different package (HVQFN-33) and with different pinout, so it is not a drop-in replacement. For a functional equivalent, consider the NXP LPC845 in LQFP-48, but it requires PCB redesign.

Engineering reference data for STM32L073VZT6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM32L073VZT6 when you need an integrated LCD driver, USB connectivity, and 192 KB Flash in an LQFP-100 package. It is ideal for smart meters, portable medical devices, and IoT endpoints that require a display and low power consumption. If you do not need the LCD driver, the STM32L072VZT6 offers the same memory and USB at a potentially lower cost. If you need less Flash, the STM32L073VBT6 (128 KB) is a drop-in alternative. For applications without USB, the STM32L071VZT6 is a cost-effective option. All alternatives share the same LQFP-100 footprint, allowing PCB reuse.

Comparison with Alternatives

Parameter	This Product	STM32L073VBT6	STM32L072VZT6	STM32L071VZT6
Package	LQFP-100	LQFP-100	LQFP-100	LQFP-100
Brand	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Flash Memory	192 KB	128 KB	192 KB	192 KB
LCD Driver	Yes (8x40)	Yes (8x40)	No	No
USB Interface	Yes (FS)	Yes (FS)	Yes (FS)	No
Standby Current	0.29 uA	0.29 uA	0.29 uA	0.29 uA
ADC Resolution	12-bit	12-bit	12-bit	12-bit
Max Clock Frequency	32 MHz	32 MHz	32 MHz	32 MHz

Key Differentiators

Integrated LCD driver (vs STM32L072VZT6)
Higher Flash memory (vs STM32L073VBT6)
USB 2.0 full-speed interface (vs STM32L071VZT6)

Design Notes

Decouple each VDD pin with a 100nF ceramic capacitor placed as close as possible to the pin. Additionally, place a 4.7uF capacitor on the main VDD supply. For VDDA, use a 1uF capacitor and a ferrite bead to isolate analog noise. Ensure VBAT is connected to a backup battery or tied to VDD if not used.

For the LQFP-100 package, ensure proper solder paste stencil design to avoid bridging. Use a 0.5mm pitch land pattern. Provide a solid ground plane under the MCU to reduce EMI. For the crystal oscillator, place it close to the OSC_IN/OSC_OUT pins and keep traces short with a ground guard ring.

Do not leave unused GPIO pins floating; configure them as outputs or enable internal pull-ups/pull-downs to reduce leakage current. When using the USB interface, ensure proper 22-ohm series resistors on DP and DM lines. For the LCD driver, verify the contrast control voltage (VLCD) is within the specified range to avoid display issues.

Compliance Information

RoHS

Compliant

REACH

Compliant

AEC-Q100

Not Applicable

Lead Free

Yes

Halogen Free

Yes

Conflict Minerals

Compliant

RoHS and REACH compliant per STMicroelectronics product page. Not AEC-Q100 qualified; for automotive, consider STM32L0 series with AEC-Q100 option.

Data verified on: 2026-08-09

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