Please consider this device SST39VF401C, SST39VF402C

• Organized as 256K x16
• Single Voltage Read and Write Operations – 2.7-3.6V
• Superior Reliability– Endurance: 100,000 Cycles (typical), Greater than 100 years Data Retention
• Low Power Consumption (typical values at 14 MHz)
• Active Current: 9 mA (typical)– Standby Current: 3 µA (typical)
• Sector-Erase Capability– Uniform 2 KWord sectors
• Block-Erase Capability– Uniform 32 KWord blocks
• Fast Read Access Time– 70 ns for SST39VF400A
• Fast Erase and Word-Program
• Sector-Erase Time: 18 ms (typical)
• Block-Erase Time: 18 ms (typical)
• Chip-Erase Time: 70 ms (typical)
• Word-Program Time: 14 µs (typical)
• Chip Rewrite Time:4 seconds (typical) for SST39VF400A
• Automatic Write Timing– Internal VPP Generation
• End-of-Write Detection– Toggle Bit– Data# Polling
• JEDEC Standard– Flash EEPROM Pinouts and command sets
• Packages Available– 48-lead TSOP (12mm x 20mm), 48-ball TFBGA (6mm x 8mm) , 48-ball WFBGA (4mm x 6mm), 48-bump XFLGA (4mm x 6mm)
• All non-Pb (lead-free) devices are RoHS compliant