Touch Slide-Key BS84C12A-3 + HT74LS164 Characteristics Touch Key Flash MCU : BS84C12A-3 28SSOP Operating Voltage : 2.7V ~ 5.5V 12 touch key functions Flash Program Memory : 4K16 RAM Data Memory : 3848 EEPROM Memory : 648 Multi-channel 12-bit resolution A/D converter 2 I C and SPI interfaces Low voltage reset function High current LED driver Minimal number of external components Application Areas Consumer Products, Home Appliances, Industrial Control, Health Care Products, etc. Application Circuit HT74LS164 14SOP HT74LS164 14SOP