This part is a kind of semiconductor called 39SF010A.

Function of this product has SST39SF010A.

Manufacturers : SST

Image and pinout :

Some of the text within the PDF file :

1 Mbit / 2 Mbit / 4 Mbit (x8) Multi-Purpose Flash SST39SF010A / SST39SF020A / SST39SF040 SST39SF010A / 020A / 0405.0V 4Mb (x8) MPF memories Preliminary Specification FEATURES: • Organized as 128K x8 / 256K x8 / 512K x8 • Single 5.0V Read and Write Operations • Superior Reliability – Endurance: 100,000 Cycles (typical) – Greater than 100 years Data Retention • Low Power Consumption: – Active Current: 10 mA (typical) – Standby Current: 30 µA (typical) • Sector-Erase Capability – Uniform 4 KByte sectors • Fast Read Access Time: – 45 and 70 ns • Latched Address and Data • Fast Erase and Byte-Program: – Sector-Erase Time: 18 ms (typical) – Chip-Erase Time: 70 ms (typical) – Byte-Program Time: 14 µs (typical) – Chip Rewrite Time: 2 seconds (typical) for SS [ ... ]

39SF010A PDF Datasheet Download