Overview
The STM32L073RZT6U is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L0 series. It features 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 is suitable for a wide range of low-power applications. It incorporates advanced peripherals, including USB 2.0 crystal-less, high-speed embedded memories, and an extensive set of I/Os and peripherals.
Key Specifications
| Parameter | Specification |
|---|---|
| Core Processor | ARM® Cortex®-M0+ |
| Core Size | 32-Bit Single-Core |
| 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) |
| Operating Temperature | -40 to +125 °C |
| I/Os | Up to 84 fast I/Os (78 I/Os 5V tolerant) |
| ADC | 12-bit, up to 16 channels |
| DAC | 2 x 12-bit channel DACs with output buffers |
| Comparators | 2 ultra-low-power comparators |
| Timers | 11 timers including 2x 16-bit with up to 4 channels, 2x 16-bit with up to 2 channels, 1x 16-bit ultra-low-power timer, 1x SysTick, 1x RTC |
| Communication Interfaces | 1x USB 2.0 crystal-less, 4x USART, 2x SPI, 3x I2C |
Key Features
- Ultra-low-power platform with multiple power-saving modes (Standby, Stop, and Sleep modes)
- High-performance Arm Cortex-M0+ 32-bit RISC core
- High-speed embedded memories: up to 192 Kbytes of Flash, 20 Kbytes of RAM, and 6 Kbytes of data EEPROM
- Extensive range of enhanced I/Os and peripherals, including USB 2.0 crystal-less, ADC, DACs, and comparators
- Reset and supply management with ultra-safe, low-power BOR and programmable voltage detector (PVD)
- Clock sources: 1 to 25 MHz crystal oscillator, 32 kHz oscillator for RTC, and high-speed internal 16 MHz factory-trimmed RC
- Support for LCD driver and capacitive sensing channels for touchkey, linear, and rotary touch sensors
- 7-channel DMA controller supporting ADC, SPI, I2C, USART, DAC, and Timers
Applications
- Low-power IoT devices and smart home applications
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Consumer electronics such as wearables and fitness trackers
- Automotive systems, especially those requiring low power and high reliability
- Energy harvesting and battery-powered devices
Q & A
- What is the core processor of the STM32L073RZT6U?
The core processor is the ARM® Cortex®-M0+ 32-bit RISC core.
- What is the maximum operating frequency of the STM32L073RZT6U?
The maximum operating frequency is up to 32 MHz.
- What is the range of the power supply for the STM32L073RZT6U?
The power supply range is from 1.65 V to 3.6 V.
- What types of memory does the STM32L073RZT6U have?
The STM32L073RZT6U has up to 192 Kbytes of Flash memory, 20 Kbytes of RAM, and 6 Kbytes of data EEPROM.
- What are the key power-saving features of the STM32L073RZT6U?
The key power-saving features include multiple power-saving modes (Standby, Stop, and Sleep modes), ultra-low-power BOR, and programmable voltage detector (PVD).
- What communication interfaces are available on the STM32L073RZT6U?
The available communication interfaces include 1x USB 2.0 crystal-less, 4x USART, 2x SPI, and 3x I2C.
- What is the operating temperature range of the STM32L073RZT6U?
The operating temperature range is from -40 to +125 °C.
- Does the STM32L073RZT6U support LCD drivers?
Yes, it supports LCD drivers for up to 4x52 or 8x48 segments with contrast adjustment and blinking mode.
- What is the role of the DMA controller in the STM32L073RZT6U?
The 7-channel DMA controller supports ADC, SPI, I2C, USART, DAC, and Timers.
- Can the STM32L073RZT6U be used in automotive systems?
Yes, it can be used in automotive systems due to its low power consumption and high reliability.
