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STMicroelectronics STM32L412CBU6P — Microcontrollers & Processors (MCU / MPU / DSP)
STMicroelectronics

STM32L412CBU6P STM32L4 MCU, ARM Cortex-M4, 80 MHz

MPNSTM32L412CBU6P
Active

STMicroelectronics STM32L4 series, ARM Cortex-M4, 32-Bit Single-Core, 80MHz, 128KB (128K x 8) FLASH, 40K x 8 RAM, 48-UFQFN Exposed Pad, -40°C ~ 85°C.

$2.4392Ref. price · indicative, final on quote
STM32L412CBU6P datasheet
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Specifications

STM32L412CBU6P Technical Specifications
ParameterValue
SeriesSTM32L4
Mounting typeSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed80MHz
PackageTray
RAM size40K x 8
Core size32-Bit Single-Core
ConnectivityI2C, Infrared, IrDA, LINbus, Quad SPI, SPI, UART/USART, USB
Number of i (O)38
Core processorARM® Cortex®-M4
Case48-UFQFN Exposed Pad
Data convertersA/D 10x12b
Program memory size128KB (128K x 8)

Product details

The STM32L412CBU6P: 38 I/Os and connectivity including I2C, SPI, Quad SPI, UART/USART, USB, LIN, IrDA, and infrared in a 7x7 mm exposed-pad package.

128 KB Flash and 40 KB SRAM — sizing the firmware and data buffers

128 KB Flash (128K x 8) and 40 KB SRAM (40K x 8).

48-UFQFN exposed pad — rework and thermal reality

7x7 mm exposed-pad package. The pad is the primary thermal path.

Connectivity and peripherals — what the 38 I/Os buy you

38 I/Os with Quad SPI, USB, two I2C, three USARTs, two SPIs, and a 10-channel 12-bit ADC. Internal oscillator available.

For production BOMs that need a second source, the STM32L412 family includes pin-compatible density options (64 KB, 128 KB, 256 KB Flash) in the same 48-UFQFN footprint, so a firmware-only change can adapt to a different Flash size without a PCB spin.

Frequently asked questions

What is the closest pin-compatible alternative to STM32L412CBU6P in this component family?

Within the STM32L412 family, the STM32L412C8U6 (64 KB Flash) and STM32L412C6U6 (64 KB Flash, reduced SRAM) share the same 48-UFQFN footprint and pinout. The STM32L412CBU6P sits at the 128 KB Flash tier. For a larger Flash option, the STM32L432KCU6 (256 KB Flash) uses a different pinout (UFQFPN-32) and is not pin-compatible.