STMicroelectronics STM32L4 series, ARM Cortex-M4 32-bit MCU, 80MHz, 256KB Flash, 128K x 8 SRAM, 1.71V to 3.6V, 51 I/O, -40°C to 105°C, 64-LQFP, Tape & Reel.
| 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 ~ 105°C (TA) |
| Speed | 80MHz |
| Package | Tape & Reel (TR) |
| 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 | 256KB (256K x 8) |
That means a single-chip design can handle a CAN gateway, a USB mass-storage device, or a QSPI NOR Flash for code-shadowing without glue logic. The internal oscillator is available, though an external crystal improves clock accuracy for USB or CAN timing.
The base product number STM32L475 covers a family of density and package variants, so a pin-compatible upgrade path exists within the series if memory or I/O requirements grow.
Both are STM32L4 series MCUs with the same ARM Cortex-M4 core and 256 KB Flash. The STM32L476RCT6 typically includes a larger SRAM (128 KB vs 128 KB here — same) and a few additional peripherals like a second DAC or a TSC. The main difference is the package: the STM32L475RCT7TR is in a 64-LQFP, while the STM32L476RCT6 is often in a 64-LQFP as well, but the temperature grade and supply voltage range are identical. For most designs, the choice comes down to peripheral set requirements and availability.