Overview
The STM32L072KZU7 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 to provide high power efficiency and is suitable for a wide range of applications requiring low power consumption.
The device features a comprehensive set of peripherals, including high-speed embedded memories, advanced communication interfaces, and a variety of analog features. It is particularly noted for its ultra-low-power modes, making it ideal for battery-powered devices and other low-power applications.
Key Specifications
| Specification | Details |
|---|---|
| Core | Arm 32-bit Cortex-M0+ |
| Maximum Clock Frequency | 32 MHz |
| Program Memory | Up to 192 Kbytes Flash 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 |
| ADC Resolution | 12-bit, up to 16 channels |
| DACs | 2 x 12-bit channel DACs with output buffers |
| Timers | 11 timers including 2 x 16-bit with up to 4 channels, 2 x 16-bit with up to 2 channels, 1 x 16-bit ultra-low-power timer, 1 x SysTick, 1 x RTC, and 2 x watchdogs |
| Communication Interfaces | Up to three I2Cs, two SPIs, one I2S, four USARTs, one low-power UART (LPUART), and a crystal-less USB 2.0 |
| Capacitive Sensing Channels | Up to 24 channels supporting touchkey, linear, and rotary touch sensors |
Key Features
- Ultra-low-power platform with multiple power-saving modes (Standby, Stop, and Run modes)
- High-speed embedded memories: up to 192 Kbytes of Flash, 20 Kbytes of RAM, and 6 Kbytes of data EEPROM
- Advanced analog features: 12-bit ADC with hardware oversampling, two DACs, and two ultra-low-power comparators
- Extensive range of peripherals: timers, watchdogs, RTC, and SysTick
- Standard and advanced communication interfaces: USB 2.0 crystal-less, USARTs, SPIs, I2Cs, and I2S
- Up to 24 capacitive sensing channels for touch sensing functionality
- Real-time clock and backup registers that remain powered in Standby mode
- Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds
- Programmable voltage detector (PVD) and ultra-low-power POR/PDR
Applications
The STM32L072KZU7 is suitable for a variety of applications that require low power consumption and high performance. These include:
- Battery-powered devices such as wearables, IoT devices, and smart home appliances
- Industrial automation and control systems
- Medical devices requiring low power and high reliability
- Automotive systems, especially those needing low-power modes
- Consumer electronics such as smart meters, thermostats, and security systems
Q & A
- What is the core architecture of the STM32L072KZU7?
The STM32L072KZU7 is based on the Arm 32-bit Cortex-M0+ core.
- What is the maximum clock frequency of the STM32L072KZU7?
The maximum clock frequency is 32 MHz.
- How much Flash memory does the STM32L072KZU7 have?
The device has up to 192 Kbytes of Flash memory with ECC.
- What are the power supply voltage ranges for the STM32L072KZU7?
The device operates from 1.65 V to 3.6 V (down to 1.65 V at power down).
- What are the key analog features of the STM32L072KZU7?
The device includes a 12-bit ADC, two DACs, and two ultra-low-power comparators.
- Does the STM32L072KZU7 support capacitive sensing?
Yes, it supports up to 24 capacitive sensing channels.
- What communication interfaces are available on the STM32L072KZU7?
The device features USB 2.0 crystal-less, USARTs, SPIs, I2Cs, and I2S.
- What are the low-power modes available on the STM32L072KZU7?
The device offers Standby, Stop, and Run modes with various power-saving features.
- Is the STM32L072KZU7 suitable for industrial applications?
Yes, it is suitable for industrial automation and control systems due to its reliability and low power consumption.
- What is the temperature range for the STM32L072KZU7?
The device operates in the -40 to +125 °C temperature range.
