Overview
The STM32L433CBT7 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 STM32L433CBT7 is designed for low-power applications, offering a wide range of power-saving modes and advanced peripherals. It is suitable for various applications requiring high performance and low energy consumption.
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 |
| Power Supply | 1.71 V to 3.6 V |
| Temperature Range | -40 °C to 85/105/125 °C |
| Package | LQFP 48 7x7x1.4 mm |
| ADC | 12-bit, 5 Msps |
| DAC | 2x 12-bit output channels |
| Timers | 11x timers (including 1x 32-bit and 5x 16-bit) |
| Communication Interfaces | USB 2.0 full-speed, 3x I2C, 3x SPI, 3x USART, CAN, SDMMC |
| Capacitive Sensing Channels | Up to 21 channels |
| RTC | With HW calendar, alarms, and calibration |
| LCD Driver | 8x40 or 4x44 with internal step-up converter |
Key Features
- Ultra-low-power with FlexPowerControl
- Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™)
- Up to 256 KB of flash memory and 64 KB of SRAM
- Quad SPI flash memory interface
- Rich analog peripherals including 12-bit ADC, 12-bit DAC, operational amplifier, and comparators
- Multiple communication interfaces: USB 2.0 full-speed, I2C, SPI, USART, CAN, SDMMC
- Up to 21 capacitive sensing channels
- LCD driver with internal step-up converter
- Low-power RTC with HW calendar, alarms, and calibration
- Multiple power-saving modes: Shutdown, Standby, Stop 2, and VBAT modes
- Fast wakeup from Stop mode (4 µs)
- Brown out reset (BOR) and interconnect matrix
Applications
The STM32L433CBT7 is versatile and can be used in a variety of applications that require high performance and low power consumption. Some typical applications 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 and robust performance
- IoT devices and smart sensors
Q & A
- What is the core architecture of the STM32L433CBT7?
The STM32L433CBT7 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU).
- What is the maximum operating frequency of the STM32L433CBT7?
The maximum operating frequency is up to 80 MHz.
- What are the power supply voltage ranges for the STM32L433CBT7?
The device operates from a power supply voltage of 1.71 V to 3.6 V.
- What are the key power-saving modes available on the STM32L433CBT7?
The device features Shutdown, Standby, Stop 2, and VBAT modes for low-power operation.
- What types of communication interfaces are available on the STM32L433CBT7?
The device includes USB 2.0 full-speed, I2C, SPI, USART, CAN, and SDMMC interfaces.
- Does the STM32L433CBT7 support capacitive sensing?
Yes, it supports up to 21 capacitive sensing channels.
- What is the temperature range for the STM32L433CBT7?
The device operates in the -40 °C to 85/105/125 °C temperature range.
- What is the flash memory capacity of the STM32L433CBT7?
The device has up to 256 KB of flash memory.
- Does the STM32L433CBT7 have an LCD driver?
Yes, it includes an LCD driver with an internal step-up converter, supporting 8x40 or 4x44 LCD configurations.
- What is the typical current consumption in Run mode for the STM32L433CBT7?
The typical current consumption is 84 µA/MHz in LDO Mode and 36 µA/MHz in SMPS Mode at 3.3 V.
- How fast can the STM32L433CBT7 wake up from Stop mode?
The device can wake up from Stop mode in 4 µs.
