DRAM SRAM EEPROM FRAM FRAM 5 FRAM ID Mobile PC Transportation 50 FIND Vol.20 No.6 2002 FRAM FIND Vol.20 No.6 2002 51 52 FIND Vol.20 No.6 2002 FRAM m2 V C/cm2 1 fC/ fF mV 1 fC/ FIND Vol.20 No.6 2002 0.35 m 1.5 3 2T2C/1T1C 30 0.18 m 0.5 1.8 1T1C 30 0.13 m 0.1 1.2 1T1C 30 450 150 30 500 150 320 150 250 150 75 48 38 53