Overview
The STM32L151RBH6ATR is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L151x6/8/B and STM32L152x6/8/B series. It features the high-performance ARM® Cortex®-M3 32-bit RISC core operating at a frequency of 32 MHz (33.3 DMIPS). This MCU is designed for low-power applications, offering a comprehensive set of power-saving modes and a wide range of peripherals.
The device includes high-speed embedded memories such as up to 128 Kbytes of Flash memory with ECC, up to 32 Kbytes of RAM, and up to 4 Kbytes of true EEPROM with ECC. It also features a memory protection unit (MPU) and an extensive range of enhanced I/Os and peripherals connected to two APB buses.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | ARM® Cortex®-M3 32-bit CPU |
| Frequency | Up to 32 MHz (33.3 DMIPS) |
| Flash Memory | Up to 128 Kbytes with ECC |
| RAM | Up to 32 Kbytes |
| EEPROM | Up to 4 Kbytes with ECC |
| Backup Register | 80-byte |
| Power Supply | 1.8 to 3.6 V (down to 1.65 V at power down) |
| Operating Temperature | -40 to +85 °C (extended to 105°C in low power dissipation state) |
| ADC | 12-bit, up to 24 channels, 1 Msps |
| DAC | 12-bit, 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 | Up to 2 I2Cs, 2 SPIs, 3 USARTs, 1 USB 2.0 |
| Capacitive Sensing Channels | Up to 20 channels |
| I/Os | Up to 83 fast I/Os (73 I/Os 5V tolerant) |
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, RAM, and EEPROM
- Rich analog peripherals: 12-bit ADC, 12-bit DAC, 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
- Integrated LCD controller (except STM32L151x6/8/B-A devices) with LCD voltage generator
- Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds
Applications
- Low-power IoT devices
- Smart home appliances
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Consumer electronics such as wearables and handheld devices
- Automotive systems, especially those requiring low power and high reliability
Q & A
- What is the core architecture of the STM32L151RBH6ATR?
The core architecture is based on the ARM® Cortex®-M3 32-bit RISC core.
- What is the maximum frequency of the STM32L151RBH6ATR?
The maximum frequency is up to 32 MHz (33.3 DMIPS).
- What types of memory does the STM32L151RBH6ATR have?
The device includes up to 128 Kbytes of Flash memory with ECC, up to 32 Kbytes of RAM, and up to 4 Kbytes of true EEPROM with ECC.
- What are the power supply and operating temperature ranges of the STM32L151RBH6ATR?
The power supply range is 1.8 to 3.6 V (down to 1.65 V at power down), and the operating temperature range is -40 to +85 °C (extended to 105°C in low power dissipation state).
- What analog peripherals are available on the STM32L151RBH6ATR?
The device features a 12-bit ADC, 2 DACs, and 2 ultra-low-power comparators.
- What communication interfaces does the STM32L151RBH6ATR support?
The device supports up to 2 I2Cs, 2 SPIs, 3 USARTs, and 1 USB 2.0 interface.
- Does the STM32L151RBH6ATR have capacitive sensing capabilities?
Yes, it offers up to 20 capacitive sensing channels for touch sensing functionality.
- Is there an integrated LCD controller on the STM32L151RBH6ATR?
Yes, except for the STM32L151x6/8/B-A devices, it includes an integrated LCD controller with an LCD voltage generator.
- What are the power-saving modes available on the STM32L151RBH6ATR?
The device supports multiple power-saving modes including Standby, Stop, and Low-power Run modes.
- How many I/Os does the STM32L151RBH6ATR have?
The device has up to 83 fast I/Os (73 I/Os 5V tolerant).
