ST STM32L4 series, ARM Cortex-M4, 32-Bit Single-Core, 80MHz, 128KB (128K x 8) FLASH, 40K x 8 RAM, 1.71V ~ 3.6V, -40°C~125°C, 32-UFQFPN (5x5), Surface Mount.
| 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~125°C(TA) |
| Speed | 80MHz |
| Package | Tape & Reel (TR) |
| RAM size | 40K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, PWM, WDT |
| Connectivity | I²C, Infrared, IrDA, LINbus, Quad SPI, SPI, UART/USART, USB |
| Number of i (O) | 26 |
| Core processor | ARM® Cortex®-M4 |
| Case | 32-UFQFN Exposed Pad |
| Data converters | A/D 10x12b |
| Program memory size | 128KB (128K x 8) |
The STM32L412KBU3 carries an EOL-hot lifecycle status. The last-time-buy window is active and closing.
80 MHz on a Cortex-M4 with single-cycle multiply and FPU gives you headroom for sensor fusion (accelerometer + gyro + magnetometer) or real-time control loops without pushing the core to its ceiling.
Yes, the STM32L412KBU3 is marked EOL-hot, meaning the last-time-buy period is active. For new production, ST recommends migrating to a current STM32L4 or STM32U5 family member. We can source remaining stock against an RFQ.
ST does not list a single direct pin-compatible replacement for this order code. The recommended migration path is to evaluate a current STM32L4 or STM32U5 MCU with similar Flash and RAM density. Contact us with your target BOM for a cross-reference check.
The supply range is 1.71 V to 3.6 V, allowing direct battery operation without an external regulator.