Overview
The STM32L433VCT3 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. This microcontroller features a Floating Point Unit (FPU) single precision, supporting 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.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU |
| Frequency | Up to 80 MHz |
| Flash Memory | Up to 256 KB |
| SRAM | 64 KB (including 16 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 85/105/125 °C |
| Package | LQFP 100 14x14x1.4 mm |
| Communication Interfaces | USB 2.0 full-speed, 3x I2C, 3x SPI, 4x USART, CAN 2.0B, SDMMC |
| Analog Peripherals | 12-bit ADC (5 Msps), 2x 12-bit DAC, 1x operational amplifier, 2x ultra-low-power comparators |
| Timers | 1x 32-bit, 5x 16-bit, 2x low-power 16-bit timers |
| Capacitive Sensing Channels | Up to 21 channels |
| LCD Driver | 8x40 or 4x44 with internal step-up converter |
Key Features
- Ultra-low-power with FlexPowerControl
- Batch acquisition mode (BAM) and fast 4 µs wakeup from Stop mode
- Brown out reset (BOR) and multiple power-saving modes
- Integrated LCD driver 8x40 or 4x44 with internal step-up converter
- Up to 21 capacitive sensing channels supporting touchkey, linear, and rotary touch sensors
- Rich analog peripherals including 12-bit ADC, 12-bit DAC, operational amplifier, and ultra-low-power comparators
- 17 communication interfaces including USB, I2C, SPI, USART, CAN, and SDMMC
- True random number generator, CRC calculation unit, and 96-bit unique ID
- Development support with serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™
Applications
The STM32L433VCT3 is suitable for a wide range of low-power applications, including:
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Consumer electronics such as smart home devices and wearables
- Automotive systems, especially those requiring high reliability and low power
- IoT devices and sensor networks
Q & A
- What is the core architecture of the STM32L433VCT3?
The STM32L433VCT3 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU). - What is the maximum operating frequency of the STM32L433VCT3?
The maximum operating frequency is up to 80 MHz. - What are the power supply options for the STM32L433VCT3?
The device operates from a 1.71 V to 3.6 V power supply using an internal LDO regulator, or from 1.05 to 1.32 V using an external SMPS. - What are the key analog peripherals of the STM32L433VCT3?
The device includes a 12-bit ADC, 2x 12-bit DAC, an operational amplifier, and 2x ultra-low-power comparators. - Does the STM32L433VCT3 support capacitive sensing?
Yes, it supports up to 21 capacitive sensing channels. - What communication interfaces are available on the STM32L433VCT3?
The device features USB 2.0 full-speed, 3x I2C, 3x SPI, 4x USART, CAN 2.0B, and SDMMC interfaces. - What are the power-saving modes available on the STM32L433VCT3?
The device offers several power-saving modes including Shutdown, Standby, Stop 2, and VBAT modes. - Is the STM32L433VCT3 suitable for industrial applications?
Yes, it is suitable for industrial automation and control systems due to its high reliability and low power consumption. - Does the STM32L433VCT3 have any specific temperature range?
Yes, it operates in the -40 °C to 85/105/125 °C temperature range. - What development tools are supported by the STM32L433VCT3?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™ for development.
