Overview
The STM32L151RBT6ATR is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L series. It is based on the ARM Cortex-M3 32-bit RISC core, operating at a frequency of up to 32 MHz. This device is designed for applications requiring high performance and low power consumption, making it ideal for battery-powered devices and energy-efficient systems.
The microcontroller features a comprehensive set of peripherals, including high-speed embedded memories, enhanced I/Os, and advanced communication interfaces. It supports various power-saving modes, ensuring the design of low-power applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | ARM Cortex-M3 32-bit CPU |
| Maximum Clock Frequency | 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 |
| ADC Resolution | 12-bit, up to 24 channels |
| DAC Channels | 2 channels with output buffers |
| Comparators | 2 ultra-low-power comparators |
| Timers | 6 general-purpose 16-bit timers, 2 basic timers, 2 watchdog timers |
| Communication Interfaces | USB 2.0, 3 USARTs, 2 SPIs, 2 I2Cs |
| Capacitive Sensing Channels | Up to 20 channels |
| Power Supply | 1.65 V to 3.6 V |
| Operating Temperature | -40°C to 105°C |
| Package | LQFP 64 10x10x1.4 mm, TFBGA 64 5x5x1.2 P 0.5 mm |
Key Features
- Ultra-low-power platform with multiple power-saving modes (Standby, Stop, Low-power Run)
- High-performance ARM Cortex-M3 32-bit RISC core
- High-speed embedded memories: Flash up to 128 Kbytes, RAM up to 32 Kbytes, and EEPROM up to 4 Kbytes
- Rich analog peripherals: 12-bit ADC, 12-bit DAC, ultra-low-power comparators
- 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
- Integrated LCD controller (except STM32L151x6/8/B-A devices)
- Ultra-safe, low-power BOR (brownout reset) and POR/PDR
- Programmable voltage detector (PVD) and clock sources including crystal oscillators and internal RC oscillators
Applications
The STM32L151RBT6ATR is suitable for a wide range of applications that require low power consumption and high performance. These include:
- Battery-powered devices such as smart meters, fitness trackers, and wireless sensors.
- Industrial automation and control systems.
- Medical devices requiring low power and high reliability.
- Consumer electronics like remote controls, gaming devices, and home automation systems.
- Automotive systems, especially those requiring low power and robust performance.
Q & A
- What is the core architecture of the STM32L151RBT6ATR?
The core architecture is based on the ARM Cortex-M3 32-bit RISC core.
- What is the maximum clock frequency of the STM32L151RBT6ATR?
The maximum clock frequency is 32 MHz.
- What types of memory does the STM32L151RBT6ATR have?
The device features up to 128 Kbytes of Flash memory, up to 32 Kbytes of RAM, and up to 4 Kbytes of true EEPROM.
- What are the power-saving modes available on the STM32L151RBT6ATR?
The device supports Standby, Stop, and Low-power Run modes.
- What is the operating temperature range of the STM32L151RBT6ATR?
The operating temperature range is -40°C to 105°C.
- What communication interfaces are available on the STM32L151RBT6ATR?
The device includes USB 2.0, USART, SPI, and I2C interfaces.
- Does the STM32L151RBT6ATR support capacitive sensing?
Yes, it supports up to 20 capacitive sensing channels.
- What is the power supply range for the STM32L151RBT6ATR?
The power supply range is 1.65 V to 3.6 V.
- What types of packages are available for the STM32L151RBT6ATR?
The device is available in LQFP 64 and TFBGA 64 packages.
- Does the STM32L151RBT6ATR have an integrated LCD controller?
No, the integrated LCD controller is not available on the STM32L151x6/8/B-A devices.
- What is the purpose of the backup registers in the STM32L151RBT6ATR?
The backup registers remain powered in Standby mode to preserve critical data.
