Overview
The STM32L433RCT3 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.
The STM32L433RCT3 is part of the STM32L433xx family, which is designed for low-power applications, offering various power-saving modes and a wide range of peripherals and interfaces.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Memory | Up to 256 KB flash, 64 KB SRAM |
| Power Supply | 1.71 V to 3.6 V |
| Temperature Range | -40 °C to 85/105/125 °C |
| ADC | 1x 12-bit ADC, 5 Msps |
| DAC | 2x 12-bit DAC output channels |
| Operational Amplifier | 1x operational amplifier with built-in PGA |
| Comparators | 2x ultra-low-power comparators |
| 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, SDMMC |
| Package | LQFP 64 10x10x1.4 mm |
| Power Modes | 200 nA in VBAT mode, 8 nA Shutdown mode, 28 nA Standby mode, 280 nA Standby mode with RTC, 1.0 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™)
- High-speed memories: up to 256 KB flash, 64 KB SRAM
- Quad SPI flash memories interface
- Fast 12-bit ADC (5 Msps), two DAC channels, one operational amplifier, two ultra-low-power comparators
- Low-power RTC, various timers including 16-bit and 32-bit timers
- Up to 21 capacitive sensing channels, integrated LCD driver 8x40 or 4x44 with internal step-up converter
- Multiple communication interfaces: USB 2.0 full-speed, I2C, SPI, USART, LPUART, CAN 2.0B, SDMMC
- True random number generator, CRC calculation unit, 96-bit unique ID
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
- All packages are ECOPACK2 compliant
Applications
The STM32L433RCT3 is suitable for a wide range of applications that require low power consumption and high performance. These include:
- Industrial automation and control systems
- Medical devices requiring low power and high precision
- Consumer electronics such as smart home devices and wearables
- Automotive systems, especially those requiring low power modes
- IOT devices and smart sensors
- Energy harvesting applications
Q & A
- What is the core architecture of the STM32L433RCT3?
The STM32L433RCT3 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU).
- What is the maximum operating frequency of the STM32L433RCT3?
The maximum operating frequency is up to 80 MHz.
- What are the power supply voltage ranges for the STM32L433RCT3?
The device operates from 1.71 V to 3.6 V.
- What are the key analog peripherals of the STM32L433RCT3?
The device includes a 12-bit ADC, two 12-bit DAC channels, one operational amplifier, and two ultra-low-power comparators.
- What communication interfaces are available on the STM32L433RCT3?
The device features USB 2.0 full-speed, three I2Cs, three SPIs, four USARTs, one LPUART, CAN 2.0B, and SDMMC interfaces.
- What are the power-saving modes available on the STM32L433RCT3?
The device offers several power-saving modes including Shutdown, Standby, and Stop 2 modes, with current consumptions as low as 200 nA in VBAT mode.
- What is the temperature range for the STM32L433RCT3?
The device operates in the -40 °C to 85/105/125 °C temperature range.
- Does the STM32L433RCT3 support capacitive sensing?
Yes, it supports up to 21 capacitive sensing channels.
- What development tools are available for the STM32L433RCT3?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
- Is the STM32L433RCT3 environmentally friendly?
Yes, all packages are ECOPACK2 compliant.
- What is the package type for the STM32L433RCT3?
The device is available in an LQFP 64 10x10x1.4 mm package.
