Overview
The STM32L433RCI3 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) 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 device is designed for low-power applications, offering various power-saving modes and a comprehensive set of peripherals. It is suitable for a wide range 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 |
| Memories | Up to 256 KB flash, 64 KB SRAM |
| Temperature Range | -40 °C to +85 °C / +105 °C / +125 °C |
| Power Supply | 1.71 V to 3.6 V (internal LDO), 1.05 to 1.32 V (external SMPS) |
| ADC | 1x 12-bit ADC, 5 Msps |
| DAC | 2x 12-bit DAC output channels |
| Timers | 1x 32-bit, 5x 16-bit timers |
| Communication Interfaces | 3x I2C, 3x SPI, 3x USART, 1x Low-Power UART, 1x SAI, 1x SDMMC, 1x CAN, 1x USB full-speed device |
| Package | UFBGA 64 5x5x0.6 P 0.5 mm |
| Power Modes | VBAT mode: 200 nA, Shutdown mode: 8 nA, Standby mode: 28 nA, Stop 2 mode: 1.0 µA |
Key Features
- Ultra-low-power with FlexPowerControl and multiple power-saving modes
- High-speed memories: up to 256 KB flash, 64 KB SRAM
- Quad SPI flash memories interface
- Extensive range of enhanced I/Os and peripherals
- Integrated LCD driver 8x40 or 4x44 with internal step-up converter
- Up to 21 capacitive sensing channels
- Rich analog peripherals: 12-bit ADC, 12-bit DAC, operational amplifier, comparators
- Multiple communication interfaces: I2C, SPI, USART, USB, CAN, SDMMC
- True random number generator, CRC calculation unit, 96-bit unique ID
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
Applications
- 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 low power and high performance
- IoT devices and smart sensors
Q & A
- What is the core architecture of the STM32L433RCI3?
The STM32L433RCI3 is based on the Arm® Cortex®-M4 32-bit RISC core.
- What is the maximum operating frequency of the STM32L433RCI3?
The maximum operating frequency is up to 80 MHz.
- What are the power supply ranges for the STM32L433RCI3?
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 supply.
- What types of timers are available on the STM32L433RCI3?
The device includes 1x 32-bit timer and 5x 16-bit timers.
- Does the STM32L433RCI3 support capacitive sensing?
Yes, it supports up to 21 capacitive sensing channels.
- What communication interfaces are available on the STM32L433RCI3?
The device features 3x I2C, 3x SPI, 3x USART, 1x Low-Power UART, 1x SAI, 1x SDMMC, 1x CAN, and 1x USB full-speed device.
- What is the package type for the STM32L433RCI3?
The package type is UFBGA 64 5x5x0.6 P 0.5 mm.
- What are the power consumption modes of the STM32L433RCI3?
The device has several low-power modes including VBAT mode (200 nA), Shutdown mode (8 nA), Standby mode (28 nA), and Stop 2 mode (1.0 µA).
- Does the STM32L433RCI3 support LCD driving?
Yes, it includes an integrated LCD driver 8x40 or 4x44 with an internal step-up converter.
- What kind of development support does the STM32L433RCI3 offer?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
