16/68#1D52D63D74NC5NC6RX7TX8NC9NC10CS#11NC12PwrSave13XTAL114XTAL215IOW#(R/W#)16NC17GND18IOR#(NC)19NC20NC21NC22NC23NC24NC25A226A127A028NC29INT(IRQ#)30NC31RTS#32DTR#33NC34RESET(RESET#)35NC36NC37CTS#38DSR#39CD#40RI#41VCC42D043D144D245D346D447NC48