Overview
The STM32L433CCU3 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L433xx family. It is based on the high-performance Arm® Cortex®-M4 32-bit RISC core, operating at a frequency of up to 80 MHz. The Cortex-M4 core includes a Floating Point Unit (FPU) that supports all Arm® single-precision data-processing instructions and data types, along with a full set of DSP instructions and a Memory Protection Unit (MPU) for enhanced application security.
This microcontroller is designed for low-power applications, featuring a comprehensive set of power-saving modes and a wide range of peripherals and interfaces. It is suitable for various applications requiring high performance and low energy consumption.
Key Specifications
| Specification | Details |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Memories | Up to 256 KB flash, 64 KB SRAM |
| Power Supply | 1.71 V to 3.6 V (internal LDO), 1.05 V to 1.32 V (external SMPS) |
| Temperature Range | -40 °C to 85/105/125 °C |
| ADC | 1x 12-bit ADC, 5 Msps |
| DAC | 2x 12-bit DAC output channels |
| Timers | 1x 32-bit, 5x 16-bit general-purpose timers, 2x 16-bit low-power timers |
| Communication Interfaces | USB 2.0 full-speed, 3x I2C, 3x SPI, 4x USART, 1x LPUART, CAN (2.0B Active), SDMMC |
| Power Modes | 200 nA in VBAT mode, 8 nA Shutdown mode, 28 nA Standby mode, 1.0 µA Stop 2 mode |
| Package Options | Various packages from 48 to 100 pins |
Key Features
- Ultra-low-power with FlexPowerControl
- High-performance Arm® Cortex®-M4 32-bit RISC core with FPU
- Up to 256 KB flash memory and 64 KB SRAM
- Quad SPI flash memory interface
- Rich analog peripherals: 12-bit ADC, 12-bit DAC, operational amplifier, comparators
- Extensive communication interfaces: USB, I2C, SPI, USART, CAN, SDMMC
- Integrated LCD driver with step-up converter
- Up to 21 capacitive sensing channels
- True random number generator and CRC calculation unit
- Development support: SWD, JTAG, Embedded Trace Macrocell™
- All packages are ECOPACK2 compliant
Applications
The STM32L433CCU3 is versatile and can be used in a variety 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 wearable devices
- Energy harvesting and battery-powered devices
Q & A
- What is the core architecture of the STM32L433CCU3?
The STM32L433CCU3 is based on the Arm® Cortex®-M4 32-bit RISC core with a Floating Point Unit (FPU).
- What is the maximum operating frequency of the STM32L433CCU3?
The maximum operating frequency is up to 80 MHz.
- What are the power supply ranges for the STM32L433CCU3?
The power supply ranges are 1.71 V to 3.6 V (internal LDO) and 1.05 V to 1.32 V (external SMPS).
- What are the key power-saving modes of the STM32L433CCU3?
The key power-saving modes include VBAT mode (200 nA), Shutdown mode (8 nA), Standby mode (28 nA), and Stop 2 mode (1.0 µA).
- What types of communication interfaces are available on the STM32L433CCU3?
The available communication interfaces include USB 2.0 full-speed, I2C, SPI, USART, LPUART, CAN (2.0B Active), and SDMMC.
- Does the STM32L433CCU3 support capacitive sensing?
Yes, it supports up to 21 capacitive sensing channels.
- What is the temperature range for the STM32L433CCU3?
The temperature range is -40 °C to 85/105/125 °C.
- What types of timers are available on the STM32L433CCU3?
The timers include 1x 32-bit, 5x 16-bit general-purpose timers, and 2x 16-bit low-power timers.
- Does the STM32L433CCU3 have an integrated LCD driver?
Yes, it has an integrated LCD driver with a step-up converter.
- What development tools are supported by the STM32L433CCU3?
The development tools include serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
