APM32F103ZET6 — Geehy ARM Cortex-M3 MCU, 72MHz, 512KB flash, 64KB SRAM, LQFP144 Category: MCU Pricing LCSC $2.48 Mouser $3.23 DigiKey $3.32 Farnell $3.55 Manufacturer: https://www.geehy.com