DataFlash® is the world's number one selling serial interface flash family. Introduced in 1997, Atmel's Dataflash families (45 series and the recently introduced 26 series) are feature rich, low pin count, sequential access families ideal for program code, data storage, Serial EEPROM replacement, and the next generation PC Bios Market. AT45xxx Series Devices/Description AT45DB011D 1M bit, 2.7-Volt Minimum Serial-Interface Flash with One 264-Byte SRAM Buffer AT45DB021D 2M bit, 2.7-Volt Minimum Serial-Interface Flash with One 264-Byte SRAM Buffer AT45DB041D 4M bit 2.5-Volt or 2.7-Volt DataFlash® AT45DB081D 8M bit, 2.5 or 2.7-Volt Only Serial-Interface Flash AT45DB161D 16M bit, 2.7-Volt Only Serial-Interface Flash with two SRAM Data Buffers AT45DB321D 32M bit, 2.7-Volt Only Serial Interface Flash AT45DB642D 64M bit, 2.7-Volt Dual-Interface Flash with two 1056-Byte SRAM | 
