STMicroelectronics STM32L4 series, STM32L412RBT6, ARM Cortex-M4, 32-Bit Single-Core, 80MHz, 128KB Flash, 40K x 8 RAM, 52 I/O, 64-LQFP, -40°C ~ 85°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 ~ 85°C (TA) |
| Speed | 80MHz |
| Package | Tray |
| RAM size | 40K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, PWM, WDT |
| Connectivity | I²C, Infrared, IrDA, LINbus, Quad SPI, SPI, UART/USART, USB |
| Number of i (O) | 52 |
| Core processor | ARM® Cortex®-M4 |
| Case | 64-LQFP |
| Data converters | A/D 16x12b |
| Program memory size | 128KB (128K x 8) |
It is built for applications that need DSP and floating-point acceleration without the power budget of a high-performance part — think sensor fusion, motor-control loops, or battery-operated IoT gateways.
Connectivity spans I²C, SPI, Quad SPI, UART/USART, LIN, IrDA, infrared, and USB — enough to talk to external Flash, sensors, displays, and a host controller without glue logic.
A functional alternative within the STM32 portfolio is the STM32L151CBU6A, which uses an ARM Cortex-M3 core at 32 MHz and offers similar peripheral sets (I²C, SPI, UART, USB) but with a smaller 37-I/O count and a different package. The Cortex-M4 in the STM32L412RBT6 adds DSP and FPU capability that the M3-based part lacks, so the choice depends on whether you need the math acceleration.