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Description

The AT45D041A is a 5-volt only, serial interface Flash memory suitable for in system reprogramming. Its 4,325,376 bits of memory are organized as 2048 pages of 264 bytes each. In addition to the main memory, the AT45D041A also contains two SRAM data buffers of 264 bytes each. The buffers allow receiving of data while a page in the main memory is being reprogrammed. Unlike conventional Flash memories that are accessed randomly with multiple address lines and a parallel interface, the DataFlash uses a serial interface to sequentially access its data. The simple serial interface facilitates hardware layout, increases system reliability, minimizes switching noise, and reduces package size and active pin count.

Features

? 100 Compatible to AT45D041

? Single 4.5V - 5.5V Supply

? Serial Interface Architecture

? Page Program Operation

– Single Cycle Reprogram (Erase and Program)

– 2048 Pages (264 Bytes/Page) Main Memory

? Optional Page and Block Erase Operations

? Two 264-byte SRAM Data Buffers – Allows Receiving of Data

while Reprogramming of Nonvolatile Memory

? Continuous Read Capability through Entire Array

? Internal Program and Control Timer

? Low Power Dissipation

– 15 mA Active Read Current Typical

– 10 μA CMOS Standby Current Typical

? 15 MHz Max Clock Frequency

? Hardware Data Protection Feature

? Serial Peripheral Interface (SPI) Compatible – Modes 0 and 3

? CMOS and TTL Compatible Inputs and Outputs

? Commercial and Industrial Temperature Ranges