View fm1808 data sheet datasheet:

Preliminary FM1808 256Kb Bytewide FRAM ® Memory Features SRAM & EEPROM Compatible 256K bit Ferroelectric Nonvolatile RAM • JEDEC 32Kx8 SRAM & EEPROM pinout • Organized as 32,768 x 8 bits • 120 nS access time • High endurance 10 Billion (1010) read/writes • 180 nS cycle time • 10 year data retention at 55° C • Equal access & cycle time for reads and writes • NoDelay™ write • Advanced high-reliability ferroelectric process Low Power Operation • 15 mA active current Superior to BBSRAM Modules • 20 µA standby current • No battery concerns • Monolithic reliability Industry Standard Configuration • True surface mount solution, no rework steps • Industrial temperature -40° C to +85° C • Superior for moisture, shock, and vibration • 28-pin SOP or