AT89S8252-24AI AT89S8252-24AI-PROG AT89S8252-24AU AT89S8252-24AU(PROG) AT89S8252-24JC AT89S8252-24JCX AT89S8252-24JI AT89S8252-24JI 内存芯片 AT89S8252-24JI内存芯片 AT89S8252-24JU