Overview
The STM32L052C8U6 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 device is designed for high power efficiency and features a comprehensive set of peripherals and interfaces. The STM32L052C8U6 includes high-speed embedded memories such as 64 KB of Flash program memory, 8 KB of RAM, and 2 KB of data EEPROM, all with error correction code (ECC). It also includes a real-time clock (RTC) and backup registers that remain powered in Standby mode. The device operates from a 1.65 to 3.6 V power supply and is available in a UFQFPN 48 package.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M0+ with MPU |
| Frequency | Up to 32 MHz |
| Flash Memory | Up to 64 KB with ECC |
| RAM | 8 KB |
| Data EEPROM | 2 KB 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: 0.27 µA, Stop: 0.4 µA, Stop + RTC + RAM: 0.8 µA |
| Wakeup Time | 3.5 µs from RAM, 5 µs from Flash |
| Clock Sources | 1 to 25 MHz crystal oscillator, 32 kHz oscillator for RTC, internal RC oscillators |
| Communication Interfaces | USB 2.0 crystal-less, 2x USART, 1x UART (low power), up to 4x SPI, 2x I2C, 1x I2S |
| Analog Peripherals | 12-bit ADC, 12-bit DAC, 2x ultra-low-power comparators, up to 24 capacitive sensing channels |
| Timers | 9 timers including 16-bit, ultra-low-power, SysTick, RTC, and watchdogs |
| Package | UFQFPN 48 (7x7 mm) |
Key Features
- Ultra-low-power platform with multiple low-power modes (Standby, Stop, etc.)
- High-performance Arm® Cortex®-M0+ core with MPU
- High-speed embedded memories: 64 KB Flash, 8 KB RAM, 2 KB EEPROM with ECC
- Rich analog peripherals: 12-bit ADC, 12-bit DAC, ultra-low-power comparators, capacitive sensing channels
- Extensive range of communication interfaces: USB 2.0, USART, UART, SPI, I2C, I2S
- Multiple clock sources and internal RC oscillators
- Real-time clock (RTC) and backup registers
- 7-channel DMA controller and CRC calculation unit
- True RNG and firewall protection
- All packages are ECOPACK2 compliant
Applications
- Low-power IoT devices and smart sensors
- Wearable electronics and health monitoring devices
- Industrial automation and control systems
- Consumer electronics requiring low power consumption
- Automotive systems, especially those requiring low power and high reliability
- Medical devices and portable diagnostic equipment
Q & A
- What is the core architecture of the STM32L052C8U6?
The core architecture is based on the Arm® 32-bit Cortex®-M0+ with a memory protection unit (MPU).
- What is the maximum frequency of the STM32L052C8U6?
The maximum frequency is up to 32 MHz.
- What are the power supply and temperature range specifications?
The device operates from a 1.65 V to 3.6 V power supply and is functional in the -40 to 125 °C temperature range.
- What are the low-power modes available on the STM32L052C8U6?
The device features Standby, Stop, and Stop + RTC + RAM retention modes, with current consumptions of 0.27 µA, 0.4 µA, and 0.8 µA respectively.
- What analog peripherals are available on the STM32L052C8U6?
The device includes a 12-bit ADC, a 12-bit DAC, two ultra-low-power comparators, and up to 24 capacitive sensing channels.
- What communication interfaces does the STM32L052C8U6 support?
The device supports USB 2.0 crystal-less, two USARTs, one low-power UART, up to four SPIs, two I2Cs, and one I2S.
- What is the package type of the STM32L052C8U6?
The device is available in a UFQFPN 48 (7x7 mm) package.
- Does the STM32L052C8U6 have any specific security features?
Yes, it includes true RNG and firewall protection.
- Is the STM32L052C8U6 environmentally friendly?
Yes, all packages are ECOPACK2 compliant.
- What is the typical current consumption in Run mode?
The typical current consumption in Run mode is 88 µA/MHz.
- How quickly can the device wake up from low-power modes?
The device can wake up in 3.5 µs from RAM and 5 µs from Flash memory.
