Overview
The STM32L151C6U6ATR is an ultra-low-power microcontroller from STMicroelectronics, based on the ARM Cortex-M3 32-bit RISC core. This device is part of the STM32L151x6/8/B-A series, which combines high performance with low power consumption. It operates at a frequency of up to 32 MHz and features a memory protection unit (MPU), high-speed embedded memories, and an extensive range of enhanced I/Os and peripherals connected to two APB buses.
The STM32L151C6U6ATR is designed for applications requiring low power consumption, with features such as a 12-bit ADC, 2 DACs, and 2 ultra-low-power comparators. It also includes multiple communication interfaces, including USB 2.0, three USARTs, two SPIs, and two I2Cs. The device supports up to 20 capacitive sensing channels and has a real-time clock with backup registers.
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 16 Kbytes |
| EEPROM | Up to 4 Kbytes with ECC |
| Backup Register | 80 bytes |
| Power Supply | 1.65 V to 3.6 V |
| Operating Temperature | -40°C to +105°C |
| ADC | 12-bit, 1 Msps, up to 24 channels |
| DAC | 12-bit, 2 channels with output buffers |
| Comparators | 2 ultra-low-power comparators |
| Timers | 6x 16-bit with up to 4 IC/OC/PWM channels, 2x 16-bit basic timers, 2x watchdog timers |
| Communication Interfaces | 1x USB 2.0, 3x USART, 2x SPI, 2x I2C |
| 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
- ARM Cortex-M3 32-bit CPU operating at up to 32 MHz
- 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 various clock sources
- Rich analog peripherals including 12-bit ADC, 12-bit DAC, and ultra-low-power comparators
- Multiple 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
- Support for LCD driver (except STM32L151x6/8/B-A devices)
- Development support with serial wire debug, JTAG, and trace
Applications
The STM32L151C6U6ATR 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 and healthcare equipment
- Consumer electronics such as smart home devices and wearables
- Automotive systems, especially those requiring low power and high reliability
- IoT devices and smart sensors
- Energy metering and monitoring systems
Q & A
- What is the core architecture of the STM32L151C6U6ATR?
The core architecture is based on the ARM Cortex-M3 32-bit RISC core.
- What is the maximum operating frequency of the STM32L151C6U6ATR?
The maximum operating frequency is up to 32 MHz.
- What is the power supply range for the STM32L151C6U6ATR?
The power supply range is from 1.65 V to 3.6 V.
- What types of communication interfaces are available on the STM32L151C6U6ATR?
The device includes USB 2.0, three USARTs, two SPIs, and two I2Cs.
- Does the STM32L151C6U6ATR support capacitive sensing?
Yes, it supports up to 20 capacitive sensing channels.
- What is the operating temperature range for the STM32L151C6U6ATR?
The operating temperature range is from -40°C to +105°C.
- Does the STM32L151C6U6ATR have any power-saving modes?
Yes, it has multiple power-saving modes including Standby, Stop, and Low-power Run modes.
- What types of timers are available on the STM32L151C6U6ATR?
The device includes six 16-bit timers with up to 4 IC/OC/PWM channels, two 16-bit basic timers, and two watchdog timers.
- Is the STM32L151C6U6ATR RoHS compliant?
Yes, it is RoHS compliant.
- What development tools are supported for the STM32L151C6U6ATR?
The device supports serial wire debug, JTAG, and trace for development.
