Overview
The STM32L073VZT3 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L0 series. It integrates the Arm Cortex-M0+ 32-bit RISC core, operating at a frequency of up to 32 MHz. This microcontroller is designed for high power efficiency and features a wide range of enhanced I/Os and peripherals. It includes high-speed embedded memories, extensive analog capabilities, and advanced communication interfaces. The STM32L073VZT3 is suitable for a variety of low-power applications, including industrial, consumer, and IoT devices.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm 32-bit Cortex-M0+ with MPU |
| Operating Frequency | Up to 32 MHz |
| Flash Memory | Up to 192 Kbytes with ECC (2 banks with read-while-write capability) |
| RAM | 20 Kbytes |
| Data EEPROM | 6 Kbytes with ECC |
| Backup Register | 20 bytes |
| Power Supply | 1.65 V to 3.6 V (down to 1.65 V at power down) |
| Temperature Range | -40 to +125 °C |
| Low-Power Modes | Standby: 0.29 µA (3 wakeup pins), Stop: 0.43 µA (16 wakeup lines), Stop + RTC + 20-Kbyte RAM retention: 0.86 µA |
| Wakeup Time | 5 µs from Flash memory |
| ADC Conversion | 41 µA at 10 ksps |
| I/Os | Up to 84 fast I/Os (78 I/Os 5V tolerant) |
| Communication Interfaces | Up to three I2Cs, two SPIs, one I2S, four USARTs, one low-power UART (LPUART), and a crystal-less USB |
| Analog Peripherals | 12-bit ADC, 2 x 12-bit DACs, 2 ultra-low-power comparators, up to 24 capacitive sensing channels |
| Package | LQFP 100 14x14x1.4 mm |
Key Features
- Ultra-low-power platform with multiple low-power modes (Standby, Stop, etc.)
- High-performance Arm Cortex-M0+ 32-bit RISC core with MPU
- High-speed embedded memories: up to 192 Kbytes of Flash, 20 Kbytes of RAM, and 6 Kbytes of data EEPROM
- Extensive analog peripherals: 12-bit ADC, 2 x 12-bit DACs, 2 ultra-low-power comparators
- Advanced communication interfaces: up to three I2Cs, two SPIs, one I2S, four USARTs, one low-power UART, and a crystal-less USB
- Up to 24 capacitive sensing channels supporting touchkey, linear, and rotary touch sensors
- LCD driver for up to 4x52 or 8x48 segments with contrast adjustment and blinking mode
- Internal voltage adaptation and multiple clock sources
- Ultra-safe, low-power BOR (brownout reset) and programmable voltage detector (PVD)
- Serial wire debug supported and pre-programmed bootloader
Applications
- Industrial automation and control systems
- Consumer electronics requiring low power consumption
- Internet of Things (IoT) devices and smart home applications
- Medical devices and healthcare equipment
- Automotive systems and accessories
- Energy metering and smart grid solutions
Q & A
- What is the core architecture of the STM32L073VZT3?
The STM32L073VZT3 is based on the Arm 32-bit Cortex-M0+ RISC core with a Memory Protection Unit (MPU).
- What is the operating frequency range of the STM32L073VZT3?
The operating frequency range is up to 32 MHz.
- What are the power supply and temperature range specifications?
The power supply range is 1.65 V to 3.6 V, and the temperature range is -40 to +125 °C.
- What are the low-power modes available on the STM32L073VZT3?
The device features Standby, Stop, and Stop + RTC + 20-Kbyte RAM retention modes, with current consumptions of 0.29 µA, 0.43 µA, and 0.86 µA respectively.
- What is the wakeup time from Flash memory?
The wakeup time from Flash memory is 5 µs.
- What analog peripherals are available on the STM32L073VZT3?
The device includes a 12-bit ADC, 2 x 12-bit DACs, and 2 ultra-low-power comparators.
- What communication interfaces does the STM32L073VZT3 support?
The device supports up to three I2Cs, two SPIs, one I2S, four USARTs, one low-power UART, and a crystal-less USB.
- Does the STM32L073VZT3 support capacitive sensing?
Yes, it supports up to 24 capacitive sensing channels for touchkey, linear, and rotary touch sensors.
- What is the package type of the STM32L073VZT3?
The package type is LQFP 100 14x14x1.4 mm.
- Is the STM32L073VZT3 suitable for industrial applications?
Yes, it is suitable for industrial automation and control systems due to its robust specifications and low power consumption.
