Serial Flash ICs

The A25L020/A25L010/A25L512 are 2M/1M/512K bit Serial Flash Memory, with advanced write protection mechanisms, accessed by a high speed SPI-compatible bus. The memory can be programmed 1 to 256 bytes at a time, using the Page Program instruction. The memory is organized as 4/2/1(A25L020/A25L010/A25L512) blocks, each containing 16 sectors. Each sector is composed of 16 pages. Each page is 256 bytes wide. Thus, the whole memory can be viewed as consisting of 1024/512/256 (A25L020/A25L010/A25L512) pages, or 262,144/131,072/ 65,536 (A25L020/A25L010/A25L512) bytes. The whole memory can be erased using the Chip Erase instruction, a block at a time, using Block Erase instruction, or a sector at a time, using the Sector Erase instruction.