描述 Description

The Atmel? AT45DB081D is a 2.5V or 2.7V, serial-interface Flash memory ideally suited for a wide variety of digital voice-, image-, program code- and data-storage applications. The AT45DB081D supports Atmel RapidS? serial interface for applications requiring very high speed operations. RapidS serial interface is SPI compatible for frequencies up to 66MHz. Its 8,650,752-bits of memory are organized as 4,096 pages of 256-bytes or 264-bytes each. In addition to the main memory, the AT45DB081D also contains two SRAM buffers of 256-/264-bytes each. The buffers allow the receiving of data while a page in the main Memory is being reprogrammed, as well as writing a continuous data stream. EEPROM emulation (bit or byte alterability) is easily handled with a self-contained three step read-modify-write operation.

特性 Features

? Single 2.5V or 2.7V to 3.6V Supply
? RapidS Serial Interface: 66MHz Maximum Clock Frequency
?? – SPI Compatible Modes 0 and 3
? User Configurable Page Size
?? – 256-Bytes per Page
?? – 264-Bytes per Page
?? – Page Size Can Be Factory Pre-configured for 256-Bytes
? Page Program Operation
?? – Intelligent Programming Operation
?? – 4,096 Pages (256/264-Bytes/Page) Main Memory
? Flexible Erase Options
?? – Page Erase (256-Bytes)
?? – Block Erase (2-Kbytes)
?? – Sector Erase (64-Kbytes)
?? – Chip Erase (8Mbits)
? Two SRAM Data Buffers (256-/264-Bytes)
?? – Allows Receiving of Data while Reprogramming the Flash Array
? Continuous Read Capability through Entire Array
?? – Ideal for Code Shadowing Applications
? Low-power Dissipation
?? – 7mA Active Read Current Typical
?? – 25μA Standby Current Typical
?? – 15μA Deep Power Down Typical
? Hardware and Software Data Protection Features
?? – Individual Sector
? Sector Lockdown for Secure Code and Data Storage
?? – Individual Sector
? Security: 128-byte Security Register
?? – 64-byte User Programmable Space
?? – Unique 64-byte Device Identifier
? JEDEC Standard Manufacturer and Device ID Read
? 100,000 Program/Erase Cycles Per Page Minimum
? Data Retention – 20 Years
? Industrial Temperature Range
? Green (Pb/Halide-free/RoHS Compliant) Packaging Options

應用 Application

? Low-power Dissipation
?? – 7mA Active Read Current Typical
?? – 25μA Standby Current Typical
?? – 15μA Deep Power Down Typical
? Hardware and Software Data Protection Features
?? – Individual Sector
? Sector Lockdown for Secure Code and Data Storage
?? – Individual Sector
? Security: 128-byte Security Register
?? – 64-byte User Programmable Space
?? – Unique 64-byte Device Identifier
? JEDEC Standard Manufacturer and Device ID Read
? 100,000 Program/Erase Cycles Per Page Minimum
? Data Retention – 20 Years
? Industrial Temperature Range
? Green (Pb/Halide-free/RoHS Compliant) Packaging Options