AT24C64-10PC-2.7 AT24C64-10PI AT24C64-10PI/10SI/10TI AT24C64-10PI-1.8 AT24C64-10PI-2.5 AT24C64-10PI-2.7 AT24C64-10PU1.8 AT24C64-10PU-1.8 AT24C64-10PU2.7 AT24C64-10PU-2.7