Overview
The STM32L151VBT6ATR 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 microcontroller includes high-speed embedded memories such as up to 128 Kbytes of Flash memory with ECC, up to 16 Kbytes of RAM, and up to 4 Kbytes of true EEPROM with ECC. It also features a real-time clock, backup registers, and an extensive array of communication interfaces including USB 2.0, USARTs, SPIs, and I2Cs.
The STM32L151VBT6ATR operates from a 1.8 to 3.6 V power supply and is available in the -40 to +85 °C temperature range, extendable to +105 °C in low power dissipation state.
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 16 Kbytes |
| EEPROM | Up to 4 Kbytes with ECC |
| Backup Register | 80 bytes |
| Power Supply | 1.8 to 3.6 V (down to 1.65 V at power down) |
| Temperature Range | -40 to +85 °C / -40 to +105 °C (low power dissipation state) |
| 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 | USB 2.0, 3x USARTs, 2x SPIs, 2x I2Cs |
| 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 various power-saving modes (Standby, Stop, Low-power Run)
- High-speed embedded memories: Flash, RAM, and EEPROM
- Rich analog peripherals: 12-bit ADC, 12-bit DAC, ultra-low-power comparators
- Extensive communication interfaces: USB 2.0, USARTs, SPIs, I2Cs
- 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 devices) with LCD voltage generator
- Ultra-safe, low-power BOR with 5 selectable thresholds and programmable voltage detector (PVD)
- Development support: Serial wire debug, JTAG, and trace supported
Applications
The STM32L151VBT6ATR is suitable for a wide range of low-power applications, including:
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Consumer electronics such as smart home devices and wearables
- Automotive systems where low power and high performance are critical
- IoT devices that require efficient power management
Q & A
- What is the core architecture of the STM32L151VBT6ATR?
The core architecture is based on the ARM® Cortex®-M3 32-bit RISC CPU.
- What is the maximum frequency of the STM32L151VBT6ATR?
The maximum frequency is up to 32 MHz.
- How much Flash memory does the STM32L151VBT6ATR have?
It has up to 128 Kbytes of Flash memory with ECC.
- What are the power-saving modes available on the STM32L151VBT6ATR?
The device features Standby, Stop, and Low-power Run modes.
- What communication interfaces are available on the STM32L151VBT6ATR?
The device includes USB 2.0, USARTs, SPIs, and I2Cs.
- Does the STM32L151VBT6ATR support touch sensing?
Yes, it supports up to 20 capacitive sensing channels.
- What is the temperature range of the STM32L151VBT6ATR?
The temperature range is -40 to +85 °C, extendable to +105 °C in low power dissipation state.
- Does the STM32L151VBT6ATR have an integrated LCD controller?
No, the integrated LCD controller is not available on the STM32L151x6/8/B devices.
- What development tools are supported by the STM32L151VBT6ATR?
The device supports Serial wire debug, JTAG, and trace.
- How many I/Os does the STM32L151VBT6ATR have?
It has up to 83 fast I/Os (73 I/Os 5V tolerant).
