Overview
The STM32L433CBU6 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 STM32L433CBU6 is part of the STM32L433xx family, which is known for its ultra-low-power consumption and advanced peripherals. It is suitable for a wide range of applications requiring low power and high performance.
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 |
| Package | UFQFPN 48 7x7x0.55 mm |
| ADC | 1x 12-bit ADC, 5 Msps |
| DAC | 2x 12-bit DAC output channels |
| Timers | 1x 32-bit, 5x 16-bit timers |
| Communication Interfaces | USB 2.0 full-speed, 3x I2C, 3x SPI, 4x USART, CAN 2.0B, SDMMC |
| 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
- High-performance Arm® Cortex®-M4 32-bit RISC core with FPU
- Up to 256 KB flash memory and 64 KB SRAM
- Quad SPI flash memories interface
- Fast 12-bit ADC (5 Msps), two comparators, one operational amplifier, and two DAC channels
- Low-power RTC, multiple timers, and advanced motor control timers
- Up to 21 capacitive sensing channels and integrated LCD driver
- 17x communication interfaces including USB 2.0 full-speed, I2C, SPI, USART, CAN, and SDMMC
- True random number generator, CRC calculation unit, and 96-bit unique ID
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
- All packages are ECOPACK2 compliant
Applications
The STM32L433CBU6 is suitable for a variety of low-power applications, including:
- IoT devices and smart home appliances
- Industrial automation and control systems
- Medical devices and healthcare equipment
- Automotive systems and telematics
- Consumer electronics and wearable devices
- Energy harvesting and battery-powered devices
Q & A
- What is the core architecture of the STM32L433CBU6?
The STM32L433CBU6 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU).
- What is the maximum operating frequency of the STM32L433CBU6?
The maximum operating frequency is up to 80 MHz.
- What are the power supply ranges for the STM32L433CBU6?
The device operates from a power supply of 1.71 V to 3.6 V.
- What are the key power-saving modes of the STM32L433CBU6?
The device features VBAT mode (200 nA), Shutdown mode (8 nA), Standby mode (28 nA), and Stop 2 mode (1.0 µA).
- What communication interfaces are available on the STM32L433CBU6?
The device includes USB 2.0 full-speed, I2C, SPI, USART, CAN 2.0B, and SDMMC interfaces.
- Does the STM32L433CBU6 support capacitive sensing?
Yes, it supports up to 21 capacitive sensing channels.
- What is the temperature range for the STM32L433CBU6?
The device operates in the -40 °C to 85/105/125 °C temperature range.
- What type of memory does the STM32L433CBU6 have?
The device has up to 256 KB flash memory and 64 KB SRAM.
- Does the STM32L433CBU6 have an integrated LCD driver?
Yes, it includes an integrated LCD driver 8x40 or 4x44 with an internal step-up converter.
- What development tools are supported by the STM32L433CBU6?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
