Overview
The STM32L151RBT7ATR is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L1 series. It features the high-performance ARM® Cortex®-M3 32-bit RISC core, operating at a frequency of up to 32 MHz. This MCU is designed for low-power applications, offering 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
| Parameter | Specification |
|---|---|
| Core Processor | ARM® Cortex®-M3 32-bit RISC core |
| Operating 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 |
| Supply Voltage | 1.8 V to 3.6 V (down to 1.65 V at power down) |
| Operating Temperature | -40 °C to +105 °C |
| I/Os | Up to 51 I/Os (5V tolerant) |
| Peripherals | 12-bit ADC, 2 DACs, 2 ultra-low-power comparators, 6 general-purpose 16-bit timers, 2 basic timers, DMA controller, etc. |
| Communication Interfaces | USB 2.0, 3x USART, 2x SPI, 2x I2C, etc. |
| Capacitive Sensing Channels | Up to 20 channels |
Key Features
- Ultra-low-power platform with multiple power-saving modes (Standby, Stop, Low-power Run)
- High-speed embedded memories: up to 128 Kbytes Flash, up to 32 Kbytes RAM, and up to 4 Kbytes of true EEPROM
- Rich analog peripherals including a 12-bit ADC, 2 DACs, and 2 ultra-low-power comparators
- Extensive range of enhanced I/Os and peripherals connected to two APB buses
- Advanced communication interfaces: USB 2.0, USART, SPI, I2C
- Up to 20 capacitive sensing channels for touch sensing functionality
- Real-time clock with sub-second counting and backup registers
- Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds
- Programmable voltage detector (PVD) and clock sources including internal oscillators and external crystal oscillators
Applications
- Low-power IoT devices and smart sensors
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Consumer electronics such as wearables and handheld devices
- Automotive systems where low power and high performance are critical
- Touch sensing applications including touchkey, linear, and rotary touch sensors
Q & A
- What is the core processor of the STM32L151RBT7ATR?
The core processor is the ARM® Cortex®-M3 32-bit RISC core.
- What is the maximum operating frequency of the STM32L151RBT7ATR?
The maximum operating frequency is up to 32 MHz.
- What is the range of supply voltage for the STM32L151RBT7ATR?
The supply voltage range is from 1.8 V to 3.6 V (down to 1.65 V at power down).
- What are the key power-saving modes of the STM32L151RBT7ATR?
The key power-saving modes include Standby, Stop, and Low-power Run modes.
- What types of communication interfaces does the STM32L151RBT7ATR support?
The device supports USB 2.0, USART, SPI, and I2C interfaces.
- How many capacitive sensing channels does the STM32L151RBT7ATR have?
The device has up to 20 capacitive sensing channels.
- What is the operating temperature range of the STM32L151RBT7ATR?
The operating temperature range is from -40 °C to +105 °C.
- Does the STM32L151RBT7ATR support real-time clock functionality?
Yes, it supports a real-time clock with sub-second counting and backup registers.
- What types of timers are available on the STM32L151RBT7ATR?
The device includes six general-purpose 16-bit timers and two basic timers.
- Is the STM32L151RBT7ATR RoHS compliant?
Yes, the device is RoHS compliant.
