STM32L433 in STM32 Family
The STM32L433 sub-family from STMicroelectronics is a series of ultra-low-power microcontrollers based on the high-performance ARM Cortex-M4 32-bit RISC core. Operating at frequencies up to 80 MHz, these devices balance computational power with extreme energy efficiency. They are designed for power-sensitive applications requiring a Floating Point Unit (FPU), full DSP instructions, and a rich set of peripherals including a dedicated LCD controller and USB 2.0 crystal-less functionality.
Variants in This Sub-Family
Comparing specs that differ across variants.
| Part Number | Peripherals | I/O Pins | Package | ADC/DAC | Flash | Stock |
|---|---|---|---|---|---|---|
| STM32L433CCU6 (STMicroelectronics) | Brown-out Detect/R.. | 38 | UFQFN-48 | A/D 10x12b; D/A 2x.. | 256KB | 1,257 |
| STM32L433CBU6 (STMicroelectronics) | Brown-out Detect/R.. | 38 | UFQFN-48 | A/D 10x12b; D/A 2x.. | 128KB | 2,059 |
| STM32L433VCT6 (STMicroelectronics) | Brown-out Detect/R.. | 83 | LQFP-100 | A/D 16x12b; D/A 2x.. | 256KB | 421 |
| STM32L433RCT6 (STMicroelectronics) | Brown-out Detect/R.. | 52 | LQFP-64 | A/D 16x12b; D/A 2x.. | 256KB | 282 |
Variants within the STM32L433 family primarily differ based on Flash memory capacity, ranging from 128KB to 256KB, and package pin counts such as 48-pin UFQFPN or 64-pin LQFP. These differences dictate the available GPIO count and specific peripheral multiplexing options. Some members also feature the AES hardware accelerator suffix for secure applications, while others prioritize standard communication interfaces like I2C, SPI, and CAN.
