The STM32L412C8U6devices are ultra-low-power microcontrollers based on the high-performance Arm® Cortex®-M4 32-bit RISC core operating at a frequency of up to 80 MHz. The Cortex-M4 core features a Floating point unit (FPU) single precision that supports all Arm® single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) which enhances application security.

The STM32L412C8U6 devices embed high-speed memories (Flash memory up to 128 Kbyte,40 Kbyte of SRAM), a Quad SPI Flash memories interface (available on all packages) and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.

The STM32L412C8U6devices embed several protection mechanisms for embedded Flash memory and SRAM: readout protection, write protection, proprietary code readout protection and Firewall.

The devices offer two fast 12-bit ADC (5 Msps), two comparators, one operational amplifier, a low-power RTC, one general-purpose 32-bit timer, one 16-bit PWM timer dedicated to motor control, four general-purpose 16-bit timers, and two 16-bit low-power timers.

All Features：

Ultra-low-power with FlexPowerControl

1.71 V to 3.6 V power supply

-40 °C to 85/125 °C temperature range

300 nA in VBAT mode: supply for RTC and 32x32-bit backup registers

16 nA Shutdown mode (4 wakeup pins)

32 nA Standby mode (4 wakeup pins)

245 nA Standby mode with RTC

0.7 µA Stop 2 mode, 0.95 µA with RTC

79 µA/MHz run mode (LDO Mode)

28 μA/MHz run mode (@3.3 V SMPS Mode)

Batch acquisition mode (BAM)

4 µs wakeup from Stop mode

Brown out reset (BOR)

Interconnect matrix