Overview
The STM32L151RBT7A 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 wide range of peripherals and interfaces, including USB, I2C, SPI, and USART. The device is available in a 64-pin LQFP package and supports a voltage range from 1.8V to 3.6V, with an operating temperature range of -40°C to 105°C. The STM32L151RBT7A is ideal for applications requiring high performance, low power consumption, and advanced connectivity options.
Key Specifications
| Parameter | Value |
|---|---|
| Device Core | ARM Cortex-M3 32-bit |
| Operating Frequency Max | 32 MHz |
| Program Memory Size | 128 KB |
| No. of Pins | 64 Pins |
| IC Case / Package | LQFP |
| No. of I/O's | 51 I/O's |
| Interfaces | I2C, SPI, USART, USB |
| RAM Memory Size | 32 KB |
| ADC Channels | 20 Channels |
| ADC Resolution | 12 Bit |
| Supply Voltage Min | 1.8 V |
| Supply Voltage Max | 3.6 V |
| Operating Temperature Min | -40°C |
| Operating Temperature Max | 105°C |
| IC Mounting | Surface Mount |
| MSL | MSL 3 - 168 hours |
Key Features
- Ultra-low-power platform with multiple power-saving modes (Standby, Stop, Low-power Run)
- 1.65 V to 3.6 V power supply range (down to 1.65 V at power down)
- Operating temperature range: -40°C to 105°C
- ARM Cortex-M3 32-bit CPU with up to 32 MHz frequency
- Up to 128 KB Flash memory and up to 32 KB RAM
- 12-bit ADC with up to 24 channels and 2 DACs with output buffers
- 2 ultra-low-power comparators with window mode and wake-up capability
- Up to 20 capacitive sensing channels supporting touchkey, linear, and rotary touch sensors
- Rich communication interfaces: USB 2.0, 3 USARTs, 2 SPIs, and 2 I2Cs
- Real-time clock with sub-second counting and backup registers
- High-speed embedded memories and extensive range of enhanced I/Os and peripherals
Applications
The STM32L151RBT7A is suitable for a wide range of applications that require low power consumption and high performance. These include:
- Industrial automation and control systems
- Medical devices requiring low power and high reliability
- Consumer electronics such as smart home devices and wearables
- Automotive systems, especially those needing low power and robust performance
- IoT devices that require efficient power management and advanced connectivity options
Q & A
- What is the core architecture of the STM32L151RBT7A?
The STM32L151RBT7A features the ARM Cortex-M3 32-bit RISC core.
- What is the maximum operating frequency of the STM32L151RBT7A?
The maximum operating frequency is 32 MHz.
- What is the memory configuration of the STM32L151RBT7A?
It has up to 128 KB Flash memory and up to 32 KB RAM.
- What are the power supply voltage ranges for the STM32L151RBT7A?
The device operates from 1.8 V to 3.6 V.
- What are the key communication interfaces available on the STM32L151RBT7A?
The device includes USB 2.0, 3 USARTs, 2 SPIs, and 2 I2Cs.
- What is the operating temperature range of the STM32L151RBT7A?
The operating temperature range is -40°C to 105°C.
- Does the STM32L151RBT7A support capacitive sensing?
Yes, it supports up to 20 capacitive sensing channels.
- What are the power-saving modes available on the STM32L151RBT7A?
The device offers Standby, Stop, and Low-power Run modes.
- Is the STM32L151RBT7A suitable for industrial applications?
Yes, it is suitable for industrial automation and control systems due to its robust performance and low power consumption.
- What is the package type of the STM32L151RBT7A?
The device is available in a 64-pin LQFP package.
- Does the STM32L151RBT7A have a real-time clock?
Yes, it includes a real-time clock with sub-second counting and backup registers.
