Overview
The STM32L151R8H6ATR, produced by STMicroelectronics, is an ultra-low-power microcontroller unit (MCU) based on the ARM® Cortex®-M3 32-bit RISC core. This device operates at a frequency of up to 32 MHz and is designed for applications requiring high performance and low power consumption. It features a comprehensive set of peripherals, including high-speed embedded memories, advanced communication interfaces, and rich analog peripherals. The STM32L151R8H6ATR is particularly suited for battery-powered devices and other low-power applications due to its ultra-low-power platform and various power-saving modes.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | 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 |
| Power Supply | 1.8 V to 3.6 V (down to 1.65 V at power down) |
| Operating Temperature | -40°C to +85°C (extended to +105°C in low power dissipation state) |
| Package | 64-BGA (5x5) |
| I/Os | Up to 51 high current I/Os (50 for STM32L151R8H6ATR) |
| 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 USARTs, 2x SPIs, 2x I2Cs |
| Timers | 6x 16-bit timers, 2x 16-bit basic timers, 2x watchdog timers |
| Capacitive Sensing Channels | Up to 20 channels |
Key Features
- Ultra-low-power platform with various power-saving modes
- High-performance ARM® Cortex®-M3 32-bit RISC core operating at up to 32 MHz
- High-speed embedded memories: up to 128 Kbytes Flash, up to 32 Kbytes RAM, and up to 4 Kbytes EEPROM
- Rich analog peripherals: 12-bit ADC, 12-bit DAC, and ultra-low-power comparators
- Advanced communication interfaces: USB 2.0, USARTs, SPIs, and I2Cs
- Up to 20 capacitive sensing channels for touch sensing functionality
- Real-time clock with sub-second counting and backup registers
- Memory protection unit (MPU) and reset and supply management
- Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds
- Programmable voltage detector (PVD) and clock sources including crystal oscillators and internal RC oscillators
- Development support: serial wire debug, JTAG, and trace supported
Applications
- Battery-powered devices such as smart meters, fitness trackers, and wearable devices
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Consumer electronics such as remote controls and gaming devices
- Automotive systems, especially those requiring low power and high reliability
- IoT devices and smart home appliances
Q & A
- What is the core architecture of the STM32L151R8H6ATR?
The STM32L151R8H6ATR is based on the ARM® Cortex®-M3 32-bit RISC core.
- What is the maximum operating frequency of the STM32L151R8H6ATR?
The maximum operating frequency is up to 32 MHz.
- What are the memory specifications of the STM32L151R8H6ATR?
The device features up to 128 Kbytes of Flash memory, up to 32 Kbytes of RAM, and up to 4 Kbytes of EEPROM.
- What are the power supply requirements for the STM32L151R8H6ATR?
The device operates from a 1.8 V to 3.6 V power supply (down to 1.65 V at power down).
- What are the key analog peripherals of the STM32L151R8H6ATR?
The device includes a 12-bit ADC, 12-bit DAC, and 2 ultra-low-power comparators.
- What communication interfaces are available on the STM32L151R8H6ATR?
The device features USB 2.0, 3x USARTs, 2x SPIs, and 2x I2Cs.
- How many capacitive sensing channels does the STM32L151R8H6ATR support?
The device supports up to 20 capacitive sensing channels.
- What is the operating temperature range of the STM32L151R8H6ATR?
The operating temperature range is -40°C to +85°C (extended to +105°C in low power dissipation state).
- Does the STM32L151R8H6ATR support real-time clock functionality?
Yes, the device includes a real-time clock with sub-second counting and backup registers.
- What development tools are supported by the STM32L151R8H6ATR?
The device supports serial wire debug, JTAG, and trace.
- Is the STM32L151R8H6ATR RoHS compliant?
Yes, the device is lead-free and RoHS compliant.
