32 MHz Cortex-M0+ with integrated EEPROM — what it buys the BOM
It packs 32 KB of Flash, 8 KB of SRAM, and a separate 2 KB EEPROM block — the latter saves an external serial EEPROM for parameter storage in sensor nodes or config registers in motor drives.
Memory map and firmware staging
The 32 KB Flash (32K x 8) is sized for a lightweight RTOS like FreeRTOS plus a modest application layer; the 8 KB SRAM leaves room for a few hundred bytes of stack and a DMA buffer. The 2 KB EEPROM is rated for 100k erase/write cycles — enough for calibration coefficients or fault logs over a ten-year product life without wear-leveling. The internal oscillator trims to within 1% accuracy, so a crystal can be omitted in non-timing-critical designs.
Package and thermal routing
Housed in a 32-UFQFPN (5x5 mm) with an exposed pad, this package suits space-constrained PCBs.
ST lists the STM32L051K6U6TR as Active.