The AT45DB642 is a 2.7-volt only, dual-interface Flash memory ideally suited for awide variety of digital voice-, image-, program code- and data-storage applications. Thedual-interface of the AT45DB642 allows a dedicated serial interface to be connected to aDSP and a dedicated parallel interface to be connected to a microcontroller or vice versa.Features• Single 2.7V - 3.6V Supply• Dual-interface Architecture– Dedicated Serial Interface (SPI Modes 0 and 3 Compatible)– Dedicated Parallel I/O Interface (Optional Use)• Page Program Operation– Single Cycle Reprogram (Erase and Program)– 8192 Pages (1056 Bytes/Page) Main Memory• Supports Page and Block Erase Operations• Two 1056-byte SRAM Data Buffers – Allows Receiving of Datawhile Reprogramming the Flash Array• Continuous Read Capability through Entire Array– Ideal for Code Shadowing Applications• Low-power Dissipation– 4 mA Active Read Current Typical– 2 μA CMOS Standby Current Typical• 20 MHz Maximum Clock Frequency – Serial Interface• 5 MHz Maximum Clock Frequency – Parallel Interface• Hardware Data Protection• Commercial and Industrial Temperature Ranges
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