STMicroelectronics STM32L4 series, ARM Cortex-M4 32-bit MCU, 80 MHz, 512 KB Flash, 128 KB SRAM, 51 I/O, CAN, USB OTG, QSPI, 12-bit ADC/DAC, -40 to 85 °C, 64-LQFP.
| 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 | 128K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, PWM, WDT |
| Connectivity | CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB OTG |
| Number of i (O) | 51 |
| Core processor | ARM® Cortex®-M4 |
| Case | 64-LQFP |
| Data converters | A/D 16x12b; D/A 2x12b |
| Program memory size | 512KB (512K x 8) |
The STM32L475RET6: The 51 I/O lines in the 64-LQFP package give enough pins for parallel sensor interfaces, display control, and actuator drive. The integrated CANbus and USB OTG support industrial and automotive communication stacks directly, while the QSPI interface can map external Flash or RAM into the memory space for firmware updates or data logging.
Both are pin-compatible STM32L4 series MCUs in the same 64-LQFP package with identical 80 MHz Cortex-M4 core and 512 KB Flash. The STM32L476RET6 typically adds a few more peripheral features (e.g., additional serial interfaces or graphics support) and may have a slightly different temperature grade. For exact differences, compare the respective datasheet feature tables — the L476 is a superset variant within the family.
Yes, the STM32L475RET6 in the 64-LQFP package is pin-compatible with other STM32L4 MCUs in the same 64-pin footprint, such as the STM32L476RET6 and STM32L4R5ZIT6 (in 144-pin). This allows board-level upgrades within the family without a PCB spin, as long as the supply voltage and peripheral routing match.