Overview
The STM32L433CBT6 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 STM32L433CBT6 is part of the STM32L433xx family, which is designed for low-power applications, offering a comprehensive set of power-saving modes and advanced peripherals.
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 (internal LDO), 1.05 to 1.32 V (external SMPS) |
| Temperature Range | -40 °C to +85 °C (+105 °C junction), -40 °C to +105 °C (+125 °C junction), -40 °C to +125 °C (+130 °C junction) |
| ADC | 12-bit, 5 Msps |
| DAC | 2x 12-bit output channels |
| Timers | 1x 32-bit, 5x 16-bit, 2x low-power 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 | LQFP 48 7x7x1.4 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, 1.28 µA with RTC |
Key Features
- Ultra-low-power with FlexPowerControl
- Includes ST state-of-the-art patented technology
- High-speed memories: up to 256 KB flash, 64 KB SRAM, Quad SPI flash memories interface
- Advanced peripherals: 12-bit ADC, 2x 12-bit DAC, 1x operational amplifier, 2x ultra-low-power comparators
- Integrated LCD driver 8x40 or 4x44 with internal step-up converter
- Up to 21 capacitive sensing channels
- Comprehensive set of power-saving modes: Shutdown, Standby, Stop 2, etc.
- Independent power supplies for analog and digital components
- VBAT input for RTC and backup registers
- 17x communication interfaces including USB, I2C, SPI, USART, CAN, and more
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
Applications
- Low-power IoT devices
- Wearable electronics
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Consumer electronics such as smart home devices and energy meters
- Automotive systems, especially those requiring low power and high performance
Q & A
- What is the core architecture of the STM32L433CBT6?
The STM32L433CBT6 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU), operating at up to 80 MHz.
- What is the memory capacity of the STM32L433CBT6?
The device has up to 256 KB of flash memory and 64 KB of SRAM.
- What are the power supply options for the STM32L433CBT6?
The device can operate from a 1.71 V to 3.6 V power supply using an internal LDO regulator, or from a 1.05 to 1.32 V power supply using an external SMPS.
- What is the temperature range for the STM32L433CBT6?
The device operates in the -40 °C to +85 °C (+105 °C junction), -40 °C to +105 °C (+125 °C junction), and -40 °C to +125 °C (+130 °C junction) temperature ranges.
- What analog peripherals are available on the STM32L433CBT6?
The device includes a 12-bit ADC, two 12-bit DAC channels, one operational amplifier, and two ultra-low-power comparators.
- What communication interfaces does the STM32L433CBT6 support?
The device supports multiple communication interfaces including USB, I2C, SPI, USART, CAN, SAI, and SDMMC.
- What power-saving modes are available on the STM32L433CBT6?
The device offers several power-saving modes such as Shutdown, Standby, Stop 2, and more, with current consumption as low as 200 nA in VBAT mode.
- Does the STM32L433CBT6 support capacitive sensing?
Yes, the device supports up to 21 capacitive sensing channels.
- What is the package type for the STM32L433CBT6?
The device is available in an LQFP 48 7x7x1.4 mm package.
- Is the STM32L433CBT6 RoHS compliant?
Yes, the device is RoHS compliant and follows the ECOPACK2 standard.
- What development tools are supported for the STM32L433CBT6?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™ for development.
