View sst39sf-vf020p-040p-04 datasheet:

2 Mbit / 4 Mbit MPF with Block-Protection SST39SF020P / SST39SF040P / SST39VF020P / SST39VF040P Preliminary Specifications FEATURES: • Fast Erase and Byte-Program: • Organized as 256K x8 / 512K x8 – Sector-Erase Time: 18 ms typical • Single Voltage Read and Write Operations – Chip-Erase Time: 70 ms typical 1 – 4.5-5.5V for SST39SF020P/040P – Byte-Program Time: 14 µs typical – 2.7-3.6V for SST39VF020P/040P – Chip Rewrite Time: 4 seconds (typical) for SST39SF/VF020P • Superior Reliability 2 8 seconds (typical) for SST39SF/VF040P – Endurance: 100,000 Cycles (typical) • Automatic Write Timing – Greater than 100 years Data Retention – Internal V Generation • Low Power Consumption: PP 3 • End-of-Write Detection – Active Current: 10 mA (typical) – Standby Current: – To