STM32L431CCY6TR
Overview
The STM32L431CCY6TR is an ultra-low-power microcontroller based on the ARM Cortex-M4 core running at 80MHz with a dedicated floating point unit. It features 256KB of flash memory and 64KB of RAM, packaged in a highly compact 49-ball WLCSP for space-constrained applications. The device integrates advanced power management technologies, including a Batch Acquisition Mode (BAM) and multiple low-power modes down to 44.3nA in shutdown.
Why Choose This Part
This MCU offers an excellent performance-to-power ratio by combining an 80MHz FPU-enabled core with a low-power architecture that draws only 8.53mA at max clock speed. The inclusion of the ART Accelerator and FlexPowerControl allows for efficient code execution and granular power scaling across eight distinct power modes.
Applications
Key Specifications
Getting Started
Developers can begin by using the STM32CubeL4 software package with the STM32CubeIDE or Keil MDK. Hardware evaluation is commonly performed using the NUCLEO-L432KC development board, which provides a compatible environment for firmware prototyping before migrating to the WLCSP package.
Dev Boards
Development boards and breakout modules featuring the STM32L431CCY6TR or compatible chips — ready to use for prototyping.
STM32L431 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | I/O Pins | Package | Flash | Stock |
|---|---|---|---|---|
| STM32L431CCY6TR (this part) Tape & Reel | 39 | UFBGA-49 | 256KB | 4,345 |
| STM32L431CCT6TR Tape & Reel | 39 | LQFP-48 | 256KB | 2,090 |
| STM32L431CCU6 | 39 | UFQFN-48 | 256KB | 4,536 |
| STM32L431CBT6 | 39 | LQFP-48 | 128KB | 8,177 |
| STM32L431CCU6TR Tape & Reel | 39 | UFQFN-48 | 256KB | 2,696 |
| STM32L431KCU6 | 26 | UFQFN-32 | 256KB | 4,370 |
Also Consider
STMicroelectronics
- Similar performance profile but includes a USB 2.0 crystal-less interface for applications requiring PC connectivity.
