Overview
The STM32L073CZT3 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L0 series. It integrates the high-performance 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 advanced communication interfaces, rich analog peripherals, and a comprehensive set of power-saving modes, making it ideal for low-power applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm 32-bit Cortex-M0+ with MPU |
| 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 |
| Temperature Range | -40 to +125 °C |
| Low-Power Modes | Standby: 0.29 µA, Stop: 0.43 µA, Stop + RTC + RAM retention: 0.86 µA |
| Wakeup Time | 5 µs from Flash memory |
| ADC | 12-bit, 1.14 Msps, up to 16 channels |
| DACs | 2 x 12-bit with output buffers |
| Comparators | 2 ultra-low-power comparators |
| Capacitive Sensing Channels | Up to 24 channels |
| Communication Interfaces | USB 2.0 crystal-less, 4x USART, 1x UART (low power), up to 6x SPI, 3x I2C |
| Timers | 11 timers including 16-bit and ultra-low-power timers, RTC, SysTick |
| Package | LQFP 48 7x7x1.4 mm, UFQFPN 48 7x7x0.55 mm, WLCSP 49 3.3x3.3x0.6 P 0.4 mm |
Key Features
- Ultra-low-power platform with advanced power-saving modes (Standby, Stop, etc.)
- High-performance Arm Cortex-M0+ 32-bit RISC core
- Rich analog peripherals including 12-bit ADC, 2 x 12-bit DACs, and ultra-low-power comparators
- Up to 24 capacitive sensing channels for touchkey, linear, and rotary touch sensors
- Comprehensive communication interfaces: USB 2.0 crystal-less, USART, UART, SPI, I2C
- Integrated LCD controller with LCD voltage generator
- Multiple clock sources and internal voltage adaptation
- Pre-programmed bootloader and serial wire debug support
- Ultra-safe, low-power BOR and PVD
Applications
- Low-power IoT devices and smart sensors
- Portable and battery-powered devices
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Consumer electronics such as wearables and fitness trackers
- Automotive systems requiring low power and high reliability
Q & A
- What is the core architecture of the STM32L073CZT3?
The STM32L073CZT3 features an Arm 32-bit Cortex-M0+ core with an MPU.
- What is the maximum frequency of the STM32L073CZT3?
The maximum frequency is up to 32 MHz.
- What are the power supply voltage ranges for the STM32L073CZT3?
The power supply voltage ranges from 1.65 V to 3.6 V.
- What are the low-power modes available in the STM32L073CZT3?
The device supports Standby, Stop, and Stop + RTC + RAM retention modes.
- How many capacitive sensing channels does the STM32L073CZT3 support?
It supports up to 24 capacitive sensing channels.
- What communication interfaces are available on the STM32L073CZT3?
The device includes USB 2.0 crystal-less, USART, UART, SPI, and I2C interfaces.
- Does the STM32L073CZT3 have an integrated LCD controller?
Yes, it includes an integrated LCD controller with an LCD voltage generator.
- What is the temperature range for the STM32L073CZT3?
The operating temperature range is from -40 to +125 °C.
- What are the available package options for the STM32L073CZT3?
The device is available in LQFP 48, UFQFPN 48, and WLCSP 49 packages.
- Does the STM32L073CZT3 support serial wire debug?
Yes, it supports serial wire debug.
- What is the typical current consumption in Run mode for the STM32L073CZT3?
The typical current consumption in Run mode is down to 93 µA/MHz.
