STMicroelectronics STM32L4 series, STM32L433VCI3, ARM Cortex-M4 32-bit MCU, 80MHz, 256KB Flash, 64K x 8 RAM, 1.71V–3.6V, 83 I/O, 100-UFBGA (7x7), -40°C to 125°C.
| Parameter | Value |
|---|---|
| Series | STM32L4 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.71V ~ 3.6V |
| Operating temperature | -40°C ~ 125°C (TA) |
| Speed | 80MHz |
| Package | Tray |
| RAM size | 64K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, LCD, PWM, WDT |
| Connectivity | CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB |
| Number of i (O) | 83 |
| Core processor | ARM® Cortex®-M4 |
| Case | 100-UFBGA |
| Data converters | A/D 16x12b; D/A 2x12b |
| Program memory size | 256KB (256K x 8) |
The STM32L433VCI3 is an STMicroelectronics STM32L4-series 32-bit MCU built around an ARM Cortex-M4 core running at 80 MHz.
No last-time-buy notice, no PCN for discontinuation. The STM32L4 series has broad second-source options within the family (pin-compatible density variants), but the L433VCI3 itself is the sweet spot for mid-range Flash and SRAM — no need to oversize to the 512 KB or 1 MB parts unless the firmware grows.
The STM32L151CBU6A is a lower-performance sibling (Cortex-M3 at 32 MHz, 128 KB Flash, 32 KB SRAM, 85°C max) in a different package — not a pin-for-pin replacement. Within the STM32L4 series, the STM32L433VCT6 (LQFP100) is a functional equivalent with the same core and memory but in a QFP package instead of BGA.