Overview
The STM32L151R8T6ATR is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L1 series. It is based on the ARM® Cortex®-M3 32-bit RISC core, operating at a frequency of up to 32 MHz. This microcontroller is designed for low-power applications, featuring a comprehensive set of power-saving modes and a wide range of peripherals and interfaces. The device is suitable for various applications requiring high performance, low power consumption, and advanced connectivity options.
Key Specifications
| Specification | Details |
|---|---|
| Core | ARM® Cortex®-M3 32-bit CPU |
| Frequency | Up to 32 MHz |
| Flash Memory | Up to 128 Kbytes with ECC |
| RAM | Up to 32 Kbytes |
| EEPROM | Up to 4 Kbytes with ECC |
| Backup Register | 80 bytes |
| Power Supply | 1.8 V to 3.6 V (down to 1.65 V at power down) |
| Temperature Range | -40 °C to +85 °C (or +105 °C) |
| Package | LQFP 64 (10x10 mm) or TFBGA 64 (5x5 mm) |
| I/Os | Up to 51 high-current I/Os |
| Analog Peripherals | 12-bit ADC (up to 24 channels), 12-bit DAC (2 channels), 2 ultra-low-power comparators |
| Communication Interfaces | USB 2.0, 3x USART, 2x SPI, 2x I2C |
| Timers | 6x 16-bit timers, 2x basic timers, 2x watchdog timers |
| Capacitive Sensing Channels | Up to 20 channels |
Key Features
- Ultra-low-power platform: Features multiple power-saving modes including Standby, Stop, and Low-power Run modes.
- High-performance core: ARM® Cortex®-M3 32-bit CPU operating at up to 32 MHz.
- Advanced peripherals: Includes 12-bit ADC, 12-bit DAC, ultra-low-power comparators, and multiple communication interfaces like USB, USART, SPI, and I2C.
- Capacitive sensing: Supports up to 20 capacitive sensing channels for touchkey, linear, and rotary touch sensors.
- Memory protection unit (MPU): Enhances system security and reliability.
- Real-time clock (RTC): With sub-second counting and backup registers.
- Low-power BOR and POR/PDR: Ensures ultra-safe operation during power transitions.
Applications
- Industrial automation: Suitable for control systems, sensors, and actuators due to its low power consumption and robust peripherals.
- Medical devices: Ideal for portable medical devices requiring high performance and low power consumption.
- Consumer electronics: Used in devices such as smart home appliances, wearables, and other battery-powered gadgets.
- Automotive systems: Can be used in various automotive applications requiring low power and high reliability.
- IoT devices: Suitable for Internet of Things (IoT) applications that need efficient power management and advanced connectivity options.
Q & A
- What is the core architecture of the STM32L151R8T6ATR?
The STM32L151R8T6ATR is based on the ARM® Cortex®-M3 32-bit RISC core.
- What is the maximum operating frequency of the STM32L151R8T6ATR?
The maximum operating frequency is up to 32 MHz.
- What are the power supply voltage ranges for the STM32L151R8T6ATR?
The device operates from 1.8 V to 3.6 V (down to 1.65 V at power down).
- What types of communication interfaces are available on the STM32L151R8T6ATR?
The device includes USB 2.0, 3x USART, 2x SPI, and 2x I2C interfaces.
- How many capacitive sensing channels does the STM32L151R8T6ATR support?
It supports up to 20 capacitive sensing channels.
- What is the temperature range for the STM32L151R8T6ATR?
The operating temperature range is -40 °C to +85 °C (or +105 °C).
- What types of timers are available on the STM32L151R8T6ATR?
The device includes 6x 16-bit timers, 2x basic timers, and 2x watchdog timers.
- Does the STM32L151R8T6ATR have a real-time clock (RTC)?
Yes, it includes an RTC with sub-second counting and backup registers.
- What is the memory configuration of the STM32L151R8T6ATR?
The device has up to 128 Kbytes of Flash memory, up to 32 Kbytes of RAM, and up to 4 Kbytes of EEPROM.
- Is the STM32L151R8T6ATR RoHS compliant?
Yes, the device is lead-free and RoHS compliant.
- What are the typical power consumption modes of the STM32L151R8T6ATR?
The device features multiple power-saving modes including Standby, Stop, and Low-power Run modes.
