8-Bit Micro-controller; Vcc: 2.7V~5.5VSpeed (Max) : 25MHzROM : 8K BytesISP : YesRAM : 256 BytesADC : NoI/O : 26 at 28L DIP/SOP;38 at 40L DIP;42 at 44L PLCC and 44L PQFP and 44L LQFP;46 at 48L LQFPPackage : 28L PDIP,28L SOP,40L PDIP, 44L PLCC, 44L PQFP, 44L LQFP, 48L LQFP