Overview
The STM32L452CEU6 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.
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 °C / 125 °C |
| ADC | 1x 12-bit ADC, 5 Msps, up to 16-bit with hardware oversampling |
| DAC | 1x 12-bit DAC output channel, low-power sample and hold |
| Timers | 1x 32-bit, 3x 16-bit general purpose, 1x 16-bit advanced motor-control, 2x low-power 16-bit timers |
| Communication Interfaces | USB 2.0 full-speed, 4x I2C, 3x SPI, 3x USART, 1x UART, 1x LPUART, CAN (2.0B Active), SDMMC |
| Power Modes | VBAT mode: 145 nA, Shutdown mode: 22 nA, Standby mode: 106 nA, Stop 2 mode: 2.05 µA |
| Package | UFQFPN 48 7x7x0.55 mm |
Key Features
- Ultra-low-power with FlexPowerControl
- Batch acquisition mode (BAM) and fast 4 µs wakeup from Stop mode
- Brown out reset (BOR) and interconnect matrix
- Up to 83 fast I/Os, most 5 V-tolerant
- RTC with HW calendar, alarms, and calibration
- Up to 21 capacitive sensing channels for touchkey, linear, and rotary touch sensors
- Rich analog peripherals including operational amplifier, comparators, and accurate reference voltage buffered output
- 14-channel DMA controller, true random number generator, and CRC calculation unit
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
Applications
The STM32L452CEU6 is suitable for a wide range of applications that require ultra-low power consumption and high performance. These include:
- IoT devices and smart home appliances
- Industrial automation and control systems
- Medical devices and healthcare equipment
- Automotive systems and telematics
- Consumer electronics and wearable devices
Q & A
- What is the core architecture of the STM32L452CEU6?
The STM32L452CEU6 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU). - What is the maximum frequency of the STM32L452CEU6?
The maximum frequency is up to 80 MHz. - What are the memory specifications of the STM32L452CEU6?
It has up to 512 KB of Flash memory and 160 KB of SRAM. - What is the power supply range for the STM32L452CEU6?
The power supply range is from 1.71 V to 3.6 V (internal LDO) and 1.05 to 1.32 V (external SMPS). - What are the key analog peripherals of the STM32L452CEU6?
It includes a 12-bit ADC, a 12-bit DAC, an operational amplifier, and ultra-low-power comparators. - What communication interfaces are available on the STM32L452CEU6?
It features USB 2.0 full-speed, I2C, SPI, USART, UART, LPUART, CAN (2.0B Active), and SDMMC interfaces. - What are the power-saving modes of the STM32L452CEU6?
The device supports VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode with very low power consumption. - What is the package type of the STM32L452CEU6?
The package type is UFQFPN 48 7x7x0.55 mm. - Does the STM32L452CEU6 support capacitive sensing?
Yes, it supports up to 21 capacitive sensing channels. - What development tools are available for the STM32L452CEU6?
It supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
