Overview
The STM32L452RCI6 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) for enhanced application security.
The microcontroller is designed for low-power applications, offering various power-saving modes and a wide temperature range of -40 °C to 85/125 °C. It is suitable for a variety of applications requiring high performance and low energy consumption.
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), 1.05 to 1.32 V (external SMPS) |
| Temperature Range | -40 °C to 85/125 °C |
| Timers | 1x 32-bit, 5x 16-bit (including 1 advanced motor-control timer), 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 | USB 2.0 full-speed, 4x I2C, 3x SPI, 3x USART, 1x UART, 1x LPUART, CAN (2.0B Active), SDMMC |
| Package | UFBGA 64 5x5x0.6 P 0.5 mm |
| Power Consumption | 145 nA in VBAT mode, 22 nA Shutdown mode, 106 nA Standby mode, 2.05 µA Stop 2 mode |
Key Features
- Ultra-low-power with FlexPowerControl
- Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™)
- Up to 512 KB Flash memory and 160 KB SRAM
- Quad SPI Flash memories interface
- Rich analog peripherals including 12-bit ADC, 12-bit DAC, operational amplifier, and comparators
- Multiple communication interfaces: USB, I2C, SPI, USART, UART, LPUART, CAN, SDMMC
- Low-power modes: VBAT mode, Shutdown mode, Standby mode, Stop 2 mode
- Fast wakeup from Stop mode (4 µs)
- Brown out reset (BOR) and interconnect matrix
- True random number generator and CRC calculation unit
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
Applications
The STM32L452RCI6 is versatile and can be used in a wide range of applications that require low power consumption and high performance. Some typical applications include:
- 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 metering and smart grid solutions
Q & A
- What is the core architecture of the STM32L452RCI6?
The STM32L452RCI6 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU).
- What is the maximum operating frequency of the STM32L452RCI6?
The maximum operating frequency is up to 80 MHz.
- What are the power supply ranges for the STM32L452RCI6?
The device operates 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 key analog peripherals available on the STM32L452RCI6?
The device includes a 12-bit ADC, a 12-bit DAC, an operational amplifier, and two ultra-low-power comparators.
- What communication interfaces are supported by the STM32L452RCI6?
The device supports USB 2.0 full-speed, I2C, SPI, USART, UART, LPUART, CAN (2.0B Active), and SDMMC interfaces.
- What are the low-power modes available on the STM32L452RCI6?
The device offers VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode for low-power operation.
- How quickly can the STM32L452RCI6 wake up from Stop mode?
The device can wake up from Stop mode in 4 µs.
- What development tools are supported for the STM32L452RCI6?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™ for development.
- What is the temperature range for the STM32L452RCI6?
The device operates in the temperature range of -40 °C to 85/125 °C.
- What is the package type for the STM32L452RCI6?
The device is available in a UFBGA 64 5x5x0.6 P 0.5 mm package.
- What are some typical applications for the STM32L452RCI6?
The device is suitable for IoT devices, industrial automation, medical devices, automotive systems, consumer electronics, and energy metering solutions.
