描述 Description

The AT45DB081 is a 2.7-volt only, serial interface Flash memory suitable for in-system reprogramming. Its 8,650,752 bits of memory are organized as 4096 pages of 264-bytes each. In addition to the main memory, the AT45DB081 also contains two 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. The device is optimized for use in many commercial and industrial applications where high density, low pin count, low voltage, and low power are essential. Typical applications for the DataFlash are digital voice storage, image storage, and data storage. The device operates at clock frequencies up to 10 Mhz with a typical active read current consumption of 4 mA.

特性 Features

? Single 2.7V - 3.6V Supply

? Serial Interface Architecture

? Page Program Operation

– Single Cycle Reprogram (Erase and Program)

– 4096 Pages (264 Bytes/Page) Main Memory

? Two 264-Byte Data Buffers – Allows Receiving of Data while Reprogramming of

Non-Volatile Memory

? Internal Program and Control Timer

? Fast Page Program Time – 7 ms Typical

? 120 μs Typical Page to Buffer Transfer Time

? Low Power Dissipation

– 4 mA Active Read Current Typical

– 2 μA CMOS Standby Current Typical

? 10 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