STM32 microcontrollers are a popular line of Cortex-M (low-end) ARM Microcontrollers. Note, as a Cortex M, these are much smaller than your cell phones or serve

STM32 microcontrollers are a popular line of Cortex-M (low-end) ARM Microcontrollers. Note, as a Cortex M, these are much smaller than your cell phones or servers. The specs here are kB of SRAM and Flash RAM, with less than $2 per chip in bulk orders. STM32H5 starts at 128 Kbytes of flash memory and 32 Kbytes of RAM on the STM32H503, while the higher end STM32H563 of this family reaches into 2 Mbytes of flash memory, 640 Kbytes of SRAM + 10/100 Ethernet. -------- The low end STM32H503 comes with 1x OpAmp. I'm liking this modern trend of packing OpAmps into these low-cost microcontrollers.