It runs at 80 MHz and packs 512 KB of Flash with 160 KB of SRAM — enough for a moderate firmware stack, sensor fusion, or a small RTOS with a few communication buffers.
The industrial grade means the oscillator, ADC, and Flash retention are characterised across the full range — no surprises when the enclosure heats up in July or the panel powers up at -30°C.
Built-in analog: ADC and DAC
Yes, the STM32L452RET6P includes a 12-bit ADC with 16 channels and a single 12-bit DAC. That DAC is handy for generating analog setpoints, audio waveforms, or control voltages without an external converter. The ADC covers enough channels to read multiple sensor inputs — thermistors, potentiometers, current shunts — through one chip.
Connectivity that covers the common buses
The peripheral set includes CANbus, I²C, SPI, UART/USART, USB, QSPI, SAI, and MMC/SD — essentially everything you need for industrial control, data logging, or human-machine interface without adding external interface chips. QSPI is particularly useful for connecting external Flash or PSRAM for data logging or graphics buffers.