The AT45DB642 is a 2.7-volt only, dual-interface Flash memory ideally suited for a
wide variety of digital voice-, image-, program code- and data-storage applications. The
dual-interface of the AT45DB642 allows a dedicated serial interface to be connected to a
DSP 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 Data
while 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