It runs at 80 MHz and has 128 KB of Flash and 64K x 8 of SRAM.
The 80 MHz Cortex-M4 core with FPU handles single-cycle MAC and divide. The 128 KB Flash is the mid-density tier in the STM32L4 family.
STM STM32L432KBU6TR ARM Cortex-M4 MCU, 80MHz, 128KB Flash
MPNSTM32L432KBU6TR
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ST STM32L4 series ARM Cortex-M4 32-bit MCU, STM32L432KBU6TR, 80MHz, 128KB Flash, 64K x 8 RAM, 1.71V to 3.6V supply, -40°C to 85°C, 32-UFQFN exposed pad.
$2.7906Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| 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 | Tape & Reel (TR) |
| RAM size | 64K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, PWM, WDT |
| Connectivity | CANbus, I²C, IrDA, LINbus, QSPI, SAI, SPI, SWPMI, UART/USART, USB |
| Number of i (O) | 26 |
| Core processor | ARM® Cortex®-M4 |
| Case | 32-UFQFN Exposed Pad |
| Data converters | A/D 10x12b; D/A 2x12b |
| Program memory size | 128KB (128K x 8) |
Product details
Frequently asked questions
What is STM32L432KBU6TR's listed speed?
The core runs at 80 MHz, which is the maximum clock for this Cortex-M4 device in the STM32L4 series.