Overview
The STM32L151R8T6A is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L151x6/8/B-A series. It features the high-performance ARM® Cortex®-M3 32-bit RISC core, operating at a frequency of up to 32 MHz (33.3 DMIPS). This device is designed for low-power applications, offering a comprehensive set of power-saving modes and a wide range of enhanced I/Os and peripherals. The STM32L151R8T6A includes high-speed embedded memories, advanced communication interfaces, and various analog and digital peripherals, making it suitable for a variety of applications requiring low power consumption and high performance.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | ARM® Cortex®-M3 32-bit CPU |
| 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) |
| Temperature Range | -40°C to 85°C / 105°C |
| ADC | 12-bit, up to 24 channels |
| DAC | 12-bit, 2 channels with output buffers |
| Timers | 6x 16-bit with up to 4 IC/OC/PWM channels, 2x 16-bit basic timers |
| Communication Interfaces | Up to 2 I2Cs, 2 SPIs, 3 USARTs, 1 USB 2.0 |
| Capacitive Sensing Channels | Up to 20 channels |
| Package | LQFP 64 10x10x1.4 mm |
Key Features
- Ultra-low-power platform: Offers various power-saving modes including Standby, Stop, and Low-power Run modes.
- High-performance core: ARM® Cortex®-M3 32-bit CPU operating at up to 32 MHz.
- Advanced peripherals: Includes 12-bit ADC, 2 DACs, 2 ultra-low-power comparators, and multiple timers.
- Communication interfaces: Supports up to two I2Cs, two SPIs, three USARTs, and one USB 2.0 interface.
- Capacitive sensing: Up to 20 capacitive sensing channels for touchkey, linear, and rotary touch sensors.
- Real-time clock and backup registers: Includes a real-time clock and backup registers that remain powered in Standby mode.
- Memory protection unit: Features a memory protection unit (MPU) for enhanced security.
- Low-power BOR and POR/PDR: Ultra-safe, low-power brownout reset (BOR) and power-on reset (POR)/power-down reset (PDR).
Applications
- Industrial automation: Suitable for low-power industrial control systems.
- Medical devices: Ideal for medical devices requiring low power consumption and high reliability.
- Consumer electronics: Used in various consumer electronics such as smart home devices and wearables.
- Automotive systems: Can be used in automotive applications where low power and high performance are critical.
- IoT devices: Perfect for Internet of Things (IoT) devices that need to operate on low power.
Q & A
- What is the core architecture of the STM32L151R8T6A?
The core architecture is based on the ARM® Cortex®-M3 32-bit RISC CPU.
- What is the maximum frequency of the STM32L151R8T6A?
The maximum frequency is up to 32 MHz.
- How much Flash memory does the STM32L151R8T6A have?
It has up to 128 Kbytes of Flash memory with ECC.
- What are the power-saving modes available on the STM32L151R8T6A?
The device offers Standby, Stop, and Low-power Run modes.
- What communication interfaces are supported by the STM32L151R8T6A?
It supports up to two I2Cs, two SPIs, three USARTs, and one USB 2.0 interface.
- Does the STM32L151R8T6A have capacitive sensing capabilities?
Yes, it offers up to 20 capacitive sensing channels.
- What is the temperature range of the STM32L151R8T6A?
The temperature range is -40°C to 85°C / 105°C.
- What type of package is the STM32L151R8T6A available in?
It is available in the LQFP 64 10x10x1.4 mm package.
- Does the STM32L151R8T6A have a real-time clock?
Yes, it includes a real-time clock with sub-second counting.
- What is the purpose of the backup registers in the STM32L151R8T6A?
The backup registers remain powered in Standby mode to preserve critical data.
