Overview
The STM32L452VEI6, produced by STMicroelectronics, is an ultra-low-power microcontroller 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 STM32L452VEI6 is part of the STM32L452xx family, which is designed for low-power applications, offering various power-saving modes and a wide range of peripherals and interfaces. This makes it suitable for a variety of applications, including automotive, industrial, and consumer electronics.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Memory | Up to 512 KB Flash, 160 KB SRAM (including 32 KB with hardware parity check) |
| Power Supply | 1.71 V to 3.6 V (internal LDO regulator), 1.05 to 1.32 V (external SMPS) |
| Temperature Range | -40 °C to +85 °C (+105 °C junction), -40 °C to +125 °C (+130 °C junction) |
| Timers | 1x 16-bit advanced motor-control, 1x 32-bit, 3x 16-bit general purpose, 2x 16-bit basic, 2x low-power 16-bit timers |
| Analog Peripherals | 1x 12-bit ADC 5 Msps, 1x 12-bit DAC, 1x operational amplifier, 2x ultra-low-power comparators |
| Communication Interfaces | 4x I2C, 3x SPI, 3x USART, 1x UART, 1x LPUART, 1x SAI, 1x SDMMC, 1x CAN, 1x USB full-speed device |
| Capacitive Sensing Channels | Up to 21 channels |
| Package | UFBGA 100 7x7x0.6 P 0.5 mm |
| Power Consumption | 145 nA in VBAT mode, 22 nA Shutdown mode, 106 nA Standby mode, 375 nA Standby mode with RTC |
Key Features
- Ultra-low-power with FlexPowerControl
- 1.71 V to 3.6 V power supply
- -40 °C to 85/125 °C temperature range
- 145 nA in VBAT mode: supply for RTC and 32x32-bit backup registers
- 22 nA Shutdown mode (5 wakeup pins), 106 nA Standby mode (5 wakeup pins)
- 375 nA Standby mode with RTC, 2.05 µA Stop 2 mode, 2.40 µA with RTC
- 84 µA/MHz run mode (LDO Mode), 36 μA/MHz run mode (@3.3 V SMPS Mode)
- Batch acquisition mode (BAM), 4 µs wakeup from Stop mode
- Brown out reset (BOR), Interconnect matrix
- Up to 21 capacitive sensing channels: support touchkey, linear and rotary touch sensors
- Rich analog peripherals (independent supply): 12-bit ADC, 12-bit DAC, operational amplifier, ultra-low-power comparators
- Comprehensive set of communication interfaces: I2C, SPI, USART, UART, LPUART, SAI, SDMMC, CAN, USB full-speed device
- True random number generator, CRC calculation unit, 96-bit unique ID
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
Applications
The STM32L452VEI6 is versatile and can be used in a wide range of applications due to its ultra-low power consumption and rich set of peripherals.
- Automotive systems: For applications requiring low power and high performance, such as in-car infotainment, driver assistance systems, and vehicle control units.
- Industrial automation: Suitable for industrial control systems, sensors, and actuators where low power and reliability are crucial.
- Consumer electronics: Ideal for battery-powered devices such as smart home devices, wearables, and portable electronics.
- Medical devices: Can be used in medical devices that require low power consumption and high reliability, such as portable diagnostic equipment and medical sensors.
- IoT devices: Perfect for Internet of Things (IoT) applications where energy efficiency and a wide range of communication interfaces are necessary.
Q & A
- What is the core architecture of the STM32L452VEI6?
The STM32L452VEI6 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU), operating at up to 80 MHz.
- What is the memory configuration of the STM32L452VEI6?
The device features up to 512 KB of Flash memory and 160 KB of SRAM, including 32 KB with hardware parity check.
- What is the power supply range for the STM32L452VEI6?
The power supply range is from 1.71 V to 3.6 V using the internal LDO regulator, and from 1.05 to 1.32 V using an external SMPS.
- What are the temperature ranges for the STM32L452VEI6?
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 are the key analog peripherals of the STM32L452VEI6?
The device includes a 12-bit ADC, a 12-bit DAC, an operational amplifier, and two ultra-low-power comparators.
- What communication interfaces are available on the STM32L452VEI6?
The device features four I2Cs, three SPIs, three USARTs, one UART, one LPUART, one SAI, one SDMMC, one CAN, and one USB full-speed device.
- How many capacitive sensing channels does the STM32L452VEI6 support?
The device supports up to 21 capacitive sensing channels for touchkey, linear, and rotary touch sensors.
- What are the power consumption modes of the STM32L452VEI6?
The device offers various low-power modes including VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode.
- What development tools are supported by the STM32L452VEI6?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™ for development.
- Is the STM32L452VEI6 RoHS compliant?
- What is the package type of the STM32L452VEI6?
The device is available in a UFBGA 100 7x7x0.6 P 0.5 mm package.
