APM32F103RBT6-I — Geehy ARM Cortex-M3 MCU, 72MHz, 128KB flash, 20KB SRAM, LQFP64, industrial range -40..+85C Category: MCU Pricing LCSC $1.30 Mouser $1.66 DigiKey $1.72 Farnell $1.78 Manufacturer: https://www.geehy.com