Overview
The STM32L051K8T6TR is a member of the STM32L051x6/8 family of microcontrollers from STMicroelectronics. This ultra-low-power device is based on the Arm® 32-bit Cortex®-M0+ core, operating at a frequency of up to 32 MHz. It is designed to provide high performance and power efficiency, making it suitable for a wide range of low-power applications. The device features an extensive set of peripherals, including high-speed embedded memories, various timers, and advanced communication interfaces. The STM32L051K8T6TR operates within a temperature range of -40 to 125 °C and supports multiple power-saving modes, ensuring minimal energy consumption.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M0+ with MPU |
| Operating Frequency | Up to 32 MHz |
| Power Supply | 1.65 V to 3.6 V |
| Temperature Range | -40 to 125 °C |
| Flash Memory | Up to 64 Kbytes with ECC |
| RAM | 8 Kbytes |
| EEPROM | 2 Kbytes with ECC |
| Backup Register | 20 bytes |
| I/Os | Up to 51 fast I/Os (45 I/Os 5V tolerant) |
| Clock Sources | 1 to 25 MHz crystal oscillator, 32 kHz oscillator for RTC, high-speed internal 16 MHz RC, internal low-power 37 kHz RC, internal multispeed low-power 65 kHz to 4.2 MHz RC |
| Power Consumption | 0.27 µA Standby mode, 0.4 µA Stop mode, 0.8 µA Stop mode + RTC + 8-Kbyte RAM retention, 88 µA/MHz in Run mode |
| Wakeup Time | 3.5 µs from RAM, 5 µs from Flash memory |
| Package | LQFP 32 7x7x1.4 mm |
Key Features
- Ultra-low-power platform with multiple power-saving modes
- Arm® 32-bit Cortex®-M0+ core with MPU, operating at up to 32 MHz
- High-speed embedded memories: up to 64 Kbytes of Flash, 8 Kbytes of RAM, and 2 Kbytes of data EEPROM
- Advanced analog features: 12-bit ADC with hardware oversampling, two ultra-low-power comparators
- Extensive range of timers: three general-purpose 16-bit timers, one low-power timer (LPTIM), one RTC, one SysTick, and two watchdogs
- Standard and advanced communication interfaces: up to two I2C, two SPIs, one I2S, two USARTs, and a low-power UART (LPUART)
- Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds and programmable voltage detector (PVD)
- Reset and supply management with ultra-low-power POR/PDR
- 7-channel DMA controller supporting ADC, SPI, I2C, USART, and timers
- CRC calculation unit and 96-bit unique ID
Applications
The STM32L051K8T6TR is suitable for various low-power applications, including:
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Consumer electronics such as smart home devices and wearables
- Automotive systems where power efficiency is critical
- IoT devices and sensor networks
Q & A
- What is the core architecture of the STM32L051K8T6TR?
The STM32L051K8T6TR is based on the Arm® 32-bit Cortex®-M0+ core with an integrated Memory Protection Unit (MPU).
- What is the operating voltage range of the STM32L051K8T6TR?
The device operates within a voltage range of 1.65 V to 3.6 V.
- What are the key power-saving modes of the STM32L051K8T6TR?
The device features Standby mode (0.27 µA), Stop mode (0.4 µA), and Stop mode + RTC + 8-Kbyte RAM retention (0.8 µA).
- What types of timers are available on the STM32L051K8T6TR?
The device includes three general-purpose 16-bit timers, one low-power timer (LPTIM), one RTC, one SysTick, and two watchdogs.
- What communication interfaces does the STM32L051K8T6TR support?
The device supports up to two I2C, two SPIs, one I2S, two USARTs, and a low-power UART (LPUART).
- What is the temperature range for the STM32L051K8T6TR?
The device operates within a temperature range of -40 to 125 °C.
- What is the package type for the STM32L051K8T6TR?
The device is available in an LQFP 32 7x7x1.4 mm package.
- Does the STM32L051K8T6TR support DMA operations?
Yes, the device includes a 7-channel DMA controller supporting ADC, SPI, I2C, USART, and timers.
- What is the purpose of the BOR and PVD in the STM32L051K8T6TR?
The BOR (brownout reset) and PVD (programmable voltage detector) are used for reset and supply management to ensure safe operation under varying voltage conditions.
- How quickly can the STM32L051K8T6TR wake up from different modes?
The device has a wakeup time of 3.5 µs from RAM and 5 µs from Flash memory.
