Overview
The STM32L433VCT6 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 microcontroller embeds high-speed memories, including up to 256 Kbytes of flash memory and 64 Kbytes of SRAM. It also features a Quad SPI flash memory interface, extensive I/Os, and peripherals connected to multiple buses. The device supports a wide temperature range from -40 to +85 °C (and up to +125 °C junction) and operates from a 1.71 to 3.6 V power supply using an internal LDO regulator or an external SMPS supply.
Key Specifications
| Parameter | Value |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU |
| Frequency | Up to 80 MHz |
| Flash Memory | Up to 256 Kbytes |
| SRAM | 64 Kbytes (including 16 Kbytes with hardware parity check) |
| Power Supply | 1.71 to 3.6 V (internal LDO), 1.05 to 1.32 V (external SMPS) |
| Operating Temperature | -40 to +85 °C (and up to +125 °C junction) |
| I/Os | Up to 83 fast I/Os, most 5 V-tolerant |
| ADC | 1x 12-bit ADC, 5 Msps |
| DAC | 2x 12-bit DAC output channels |
| Timers | 11x timers (including 1x 16-bit advanced motor-control, 1x 32-bit, and multiple 16-bit timers) |
| Communication Interfaces | USB 2.0 full-speed, 3x I2C, 3x SPI, 4x USART, 1x LPUART, CAN 2.0B |
| Package Options | 48 to 100-pin packages (e.g., LQFP100) |
Key Features
- Ultra-low-power consumption with FlexPowerControl, including 200 nA in VBAT mode and 8 nA in Shutdown mode.
- Advanced power-saving modes such as Low-Power Run, Low-Power Sleep, Stop 1, Stop 2, and Standby modes.
- Integrated op-amps, comparators, and a low-power RTC with hardware calendar, alarms, and calibration.
- Support for capacitive sensing with up to 21 channels and LCD interfaces (8×40 or 4×44 with step-up converter).
- Rich analog peripherals including a 12-bit ADC, 12-bit DACs, and operational amplifiers with built-in PGA.
- Multiple communication interfaces including USB 2.0 full-speed, I2C, SPI, USART, LPUART, and CAN 2.0B.
- True random number generator, CRC calculation unit, and a 96-bit unique ID.
- Development support with serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
Applications
The STM32L433VCT6 is suitable for a wide range of applications that require low power consumption and high performance. These include:
- IoT devices and smart sensors due to its ultra-low-power modes and extensive peripheral set.
- Industrial automation and motor control applications, leveraging the advanced motor control timers and high-resolution timers.
- Medical devices, where the low power consumption and advanced analog peripherals are beneficial.
- Consumer electronics, such as wearables and portable devices, that require efficient power management.
- Automotive systems, where the device's robust temperature range and communication interfaces are advantageous.
Q & A
- What is the core architecture of the STM32L433VCT6?
The STM32L433VCT6 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU).
- What is the maximum frequency of the STM32L433VCT6?
The maximum frequency is up to 80 MHz.
- How much flash and SRAM memory does the STM32L433VCT6 have?
It has up to 256 Kbytes of flash memory and 64 Kbytes of SRAM.
- What is the operating temperature range of the STM32L433VCT6?
The operating temperature range is -40 to +85 °C (and up to +125 °C junction).
- What power-saving modes are available on the STM32L433VCT6?
The device supports Low-Power Run, Low-Power Sleep, Stop 1, Stop 2, and Standby modes.
- What communication interfaces does the STM32L433VCT6 support?
It supports USB 2.0 full-speed, I2C, SPI, USART, LPUART, and CAN 2.0B.
- Does the STM32L433VCT6 have any specific features for motor control?
Yes, it includes advanced motor control timers and high-resolution timers.
- How many capacitive sensing channels does the STM32L433VCT6 support?
It supports up to 21 capacitive sensing channels.
- What development tools are available for the STM32L433VCT6?
Development support includes serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
- Is the STM32L433VCT6 suitable for automotive applications?
Yes, it is suitable due to its robust temperature range and comprehensive set of communication interfaces.
