STMicroelectronics STM32L452RET6, STM32L4 series, 32-bit ARM Cortex-M4 MCU, 80 MHz, 512KB Flash, 160KB SRAM, 1.71V-3.6V supply, 52 I/O, 64-LQFP, -40°C to 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 | 160K 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, UART/USART, USB |
| Number of i (O) | 52 |
| Core processor | ARM® Cortex®-M4 |
| Case | 64-LQFP |
| Data converters | A/D 16x12b; D/A 1x12b |
| Program memory size | 512KB (512K x 8) |
The MCU integrates a CANbus controller for industrial fieldbus, full-speed USB for HMI or data logging, QSPI for external Flash/FRAM expansion, and SAI for audio serial interfaces. With 52 general-purpose I/O and a 16-channel 12-bit ADC plus a single 12-bit DAC, it covers mixed-signal sensing and actuation in a single chip.
For a production BOM this means no LTB risk and a stable supply channel through authorized distribution.
Within the STM32L4 family, the STM32L452RCT6 is a pin-compatible drop-in with 256 KB Flash instead of 512 KB — the same 80 MHz Cortex-M4 core, 160 KB SRAM, and peripheral set. The older STM32L151CBU6A (Cortex-M3, 32 MHz, 128 KB Flash) is not a direct performance or memory substitute; the STM32L452RET6 offers roughly 2.5× the core speed and 4× the Flash for applications needing more compute or firmware space.
STMicroelectronics offers the NUCLEO-L452RE and STM32L452E-DISCO discovery kit, both built around the STM32L452RET6. These boards provide Arduino and ST morpho connectivity, an integrated ST-Link debugger, and access to all peripherals for prototyping and firmware development.