This part is a kind of semiconductor called 45DB642D.
Function of this product has AT45DB642D.
Manufacturers : ATMEL Corporation
Image and pinout :
Some of the text within the PDF file :
Features • Single 2.7V - 3.6V Supply • Dual-interface Architecture – RapidS Serial Interface: 66 MHz Maximum Clock Frequency SPI Compatible Modes 0 and 3 – Rapid8 8-bit Interface: 50 MHz Maximum Clock Frequency • User Configurable Page Size – 1024 Bytes per Page – 1056 Bytes per Page – Page Size Can Be Factory Pre-configured for 1024 Bytes • Page Program Operation – Intelligent Programming Operation – 8192 Pages (1024/1056 Bytes/Page) Main Memory • Flexible Erase Options – Page Erase (1 Kbyte) – Block Erase (8 Kbytes) – Sector Erase (256 Kbytes) – Chip Erase (64 Mbits) • Two SRAM Data Buffers (1024/1056 Bytes) – Allows Receiving of Data while Reprogramming the Flash Array • Continuous Read Capability through Entire Array – Ideal for Code Shadowing Ap [ ... ]