EFM8UB20F64G-A-TQFP48 Microcontroller by Silicon Labs. Resolution: 8-Bit Speed: 48MHz Memory: 64kB flash 4352 Byte RAM Revision: A Package: Surface Mount 48-pin TQFP Download Silicon Labs EFM8UB20F64G-A-TQFP48 .pdf datasheet: Status: NOS (New Old Stock) RoHS compliant: YES