Overview
The STM32L451VCI6 is an ultra-low-power microcontroller from STMicroelectronics, based on the high-performance Arm® Cortex®-M4 32-bit RISC core. This device operates at a frequency of up to 80 MHz and features a Floating Point Unit (FPU) that supports all Arm® single-precision data-processing instructions and data types. It also includes a full set of DSP instructions and a memory protection unit (MPU) to enhance application security.
The STM32L451VCI6 embeds high-speed memories, including up to 512 KB of Flash memory and 160 KB of SRAM, along with a Quad SPI Flash memories interface. It offers an extensive range of enhanced I/Os and peripherals connected to multiple buses, and several protection mechanisms for embedded Flash memory and SRAM.
The device is designed for low-power applications, operating within a temperature range of -40 to +85 °C (or +125 °C junction) and powered by a 1.71 to 3.6 V supply. It includes various power-saving modes and independent power supplies for analog components.
Key Specifications
| Specification | Details |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Memories | Up to 512 KB Flash, 160 KB SRAM |
| Power Supply | 1.71 V to 3.6 V |
| Temperature Range | -40 °C to +85 °C (+105 °C junction), -40 °C to +125 °C (+130 °C junction) |
| ADC | 1x 12-bit ADC, 5 Msps |
| DAC | 1x 12-bit DAC output channel |
| Timers | 1x 32-bit, 4x 16-bit general-purpose, 2x 16-bit low-power timers |
| Communication Interfaces | 4x I2C, 3x SPI, 3x USART, 1x UART, 1x LPUART, 1x SAI, 1x SDMMC, 1x CAN |
| Capacitive Sensing Channels | Up to 21 channels |
| Power Modes | VBAT mode: 145 nA, Shutdown mode: 22 nA, Standby mode: 106 nA, Stop 2 mode: 2.05 µA |
| Package | UFBGA 100 7x7x0.6 P 0.5 mm |
Key Features
- Ultra-low-power with FlexPowerControl
- Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™)
- High-speed memories: up to 512 KB Flash, 160 KB SRAM
- Quad SPI Flash memories interface
- Rich analog peripherals: 12-bit ADC, 12-bit DAC, operational amplifier, comparators
- Extensive communication interfaces: I2C, SPI, USART, UART, LPUART, SAI, SDMMC, CAN
- Up to 21 capacitive sensing channels
- Low-power RTC with HW calendar, alarms, and calibration
- Multiple power-saving modes: VBAT mode, Shutdown mode, Standby mode, Stop 2 mode
- Independent power supplies for analog components
- 14-channel DMA controller, true random number generator, CRC calculation unit
Applications
The STM32L451VCI6 is suitable for a wide range of low-power applications, including:
- IoT devices and smart home appliances
- Industrial automation and control systems
- Medical devices and healthcare equipment
- Automotive systems and telematics
- Consumer electronics and wearables
- Energy harvesting and battery-powered devices
Q & A
- What is the core architecture of the STM32L451VCI6?
The STM32L451VCI6 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU).
- What is the maximum operating frequency of the STM32L451VCI6?
The maximum operating frequency is up to 80 MHz.
- What are the power supply voltage ranges for the STM32L451VCI6?
The device operates from a 1.71 V to 3.6 V power supply.
- What are the temperature ranges for the STM32L451VCI6?
The device operates in the -40 °C to +85 °C (+105 °C junction) and -40 °C to +125 °C (+130 °C junction) temperature ranges.
- What types of timers are available on the STM32L451VCI6?
The device includes one 32-bit timer, four 16-bit general-purpose timers, and two 16-bit low-power timers.
- What communication interfaces are supported by the STM32L451VCI6?
The device supports I2C, SPI, USART, UART, LPUART, SAI, SDMMC, and CAN interfaces.
- How many capacitive sensing channels does the STM32L451VCI6 have?
The device supports up to 21 capacitive sensing channels.
- What are the power-saving modes available on the STM32L451VCI6?
The device features VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode.
- Does the STM32L451VCI6 have independent power supplies for analog components?
Yes, it has independent power supplies for ADC, DAC, OPAMP, and comparators.
- What is the package type of the STM32L451VCI6?
The device is available in a UFBGA 100 7x7x0.6 P 0.5 mm package.
