Overview
The STM32L151VBH6D is an ultra-low-power microcontroller from STMicroelectronics, based on the ARM® Cortex®-M3 32-bit RISC core. It operates at a frequency of up to 32 MHz and delivers 33.3 DMIPS. This MCU is designed for low-power applications, featuring a comprehensive set of power-saving modes and a wide range of peripherals and interfaces.
The device includes high-speed embedded memories such as up to 128 Kbytes of Flash memory, up to 16 Kbytes of RAM, and up to 4 Kbytes of true EEPROM. It also features a memory protection unit (MPU), reset and supply management, and ultra-safe, low-power brownout reset (BOR) with 5 selectable thresholds.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | ARM® Cortex®-M3 32-bit RISC core |
| Operating Frequency | Up to 32 MHz |
| Performance | 33.3 DMIPS (Dhrystone 2.1) |
| Supply Voltage | 1.8 to 3.6 V (down to 1.65 V at power down) |
| Temperature Range | -40°C to +85°C (extended to +105°C in low power dissipation state) |
| Flash Memory | Up to 128 Kbytes with ECC |
| RAM | Up to 16 Kbytes |
| EEPROM | Up to 4 Kbytes with ECC |
| Backup Register | 80 bytes |
| ADC | 12-bit, 1 Msps, up to 24 channels |
| DAC | 12-bit, 2 channels with output buffers |
| Comparators | 2 ultra-low-power comparators (window mode and wake up capability) |
| Timers | 10 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 USARTs, 2x SPIs, 2x I2Cs |
| Capacitive Sensing Channels | Up to 20 channels supporting touchkey, linear, and rotary touch sensors |
| 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, and Low-power run modes)
- Rich analog peripherals including 12-bit ADC, 12-bit DAC, and ultra-low-power comparators
- Extensive range of enhanced I/Os and peripherals connected to two APB buses
- Standard and advanced communication interfaces: USB 2.0, USARTs, SPIs, and I2Cs
- Real-time clock with sub-second counting and backup registers
- Up to 20 capacitive sensing channels for touch sensing functionality
- DMA controller with 7 channels and CRC calculation unit with 96-bit unique ID
- Development support with serial wire debug, JTAG, and trace
Applications
- Low-power IoT devices and sensors
- Portable and battery-powered devices
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Consumer electronics such as smart home devices and wearables
- Automotive systems, especially those requiring low power and high reliability
Q & A
- What is the core architecture of the STM32L151VBH6D?
The STM32L151VBH6D is based on the ARM® Cortex®-M3 32-bit RISC core.
- What is the operating frequency range of the STM32L151VBH6D?
The device operates at frequencies up to 32 MHz.
- What are the power-saving modes available in the STM32L151VBH6D?
The device features multiple power-saving modes including Standby, Stop, and Low-power run modes.
- What is the temperature range for the STM32L151VBH6D?
The device operates in the -40°C to +85°C temperature range, extended to +105°C in low power dissipation state.
- What types of communication interfaces are available on the STM32L151VBH6D?
The device includes USB 2.0, USARTs, SPIs, and I2Cs.
- Does the STM32L151VBH6D support touch sensing functionality?
Yes, it supports up to 20 capacitive sensing channels for touchkey, linear, and rotary touch sensors.
- What is the maximum number of I/Os available on the STM32L151VBH6D?
Up to 83 fast I/Os (73 I/Os 5V tolerant).
- Does the STM32L151VBH6D have a built-in LCD controller?
No, the STM32L151VBH6D does not have a built-in LCD controller.
- What are the memory options available on the STM32L151VBH6D?
Up to 128 Kbytes of Flash memory, up to 16 Kbytes of RAM, and up to 4 Kbytes of true EEPROM.
- Is the STM32L151VBH6D suitable for industrial automation applications?
Yes, it is suitable due to its low power consumption and robust set of peripherals and interfaces.
