Not recommended for new designs.
Please see FM25256B or FM25L256B.

256K bit Ferroelectric Nonvolatile RAM
• Organized as 32,768 x 8 bits
• Unlimited Read/Write Cycles
• 10 Year Data Retention
• NoDelay™ Writes
• Advanced High-Reliability Ferroelectric Process

Very Fast Serial Peripheral Interface - SPI
• Up to 20 MHz Frequency
• Direct Hardware Replacement for EEPROM
• SPI Mode 0 & 3 (CPOL, CPHA=0,0 & 1,1)

Write Protection Scheme
• Hardware Protection
• Software Protection

Low Power Consumption
• Low Voltage Operation 2.7V – 3.6V
• 1uA(typ)Standby Current

Industry Standard Configurations
• Industrial Temperature -40C to +85C
• 8-pin SOIC
• 8-pin DFN

Ordering Information
• FM25L256B-G "Green" 8-pin SOIC
• FM25L256B-DG "Green" 8-pin DFN