32 MHz Cortex-M0+ with 128 KB Flash — the low-power sweet spot
The STM32L071RBH6TR is an STMicroelectronics STM32L0 series 32-bit MCU built around the ARM Cortex-M0+ core running at 32 MHz.
Industrial temperature, BGA footprint — layout and rework notes
MSL 3 out of the bag: bake before reflow if the moisture-barrier bag has been open past the floor-life window. The 50 I/O lines give enough GPIO for parallel buses or a keypad matrix alongside the I²C, SPI, and UART peripherals.
That means ST is still manufacturing this variant, and the supply chain is normal — no last-time-buy scramble, no forced redesign. The base product number STM32L071 covers a range of Flash and package options, so if this exact BGA variant becomes tight, a pin-compatible sibling in the same family is the first cross-reference to check.
