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AT45DB021B Datasheet 2-megabit 2.7-volt Only DataFlash

Manufacturer: Atmel (now Microchip Technology)

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General Description

The AT45DB021B is a 2.7-volt only, serial interface Flash memory ideally suited for a wide variety of digital voice-, image-, program code- and data-storage applications.

Its 2,162,688 bits of memory are organized as 1024 pages of 264 bytes each.

In addiwww.DataSheet4U.com tion to the main memory, the AT45DB021B also contains two SRAM data buffers of 264 bytes each.

Key Features

  • Single 2.7V - 3.6V Supply Serial Peripheral Interface (SPI) Compatible 20 MHz Max Clock Frequency Page Program Operation.
  • Single Cycle Reprogram (Erase and Program).
  • 1024 Pages (264 Bytes/Page) Main Memory Supports 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.
  • Ideal for Code Shadowing Appl.

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AT45DB041 4-Megabit 2.7-volt Only Serial DataFlash
AT45DB041A 4-megabit 2.5-volt Only Serial DataFlasH
AT45DB041B 4-megabit 2.5-volt Only or 2.7-volt Only DataFlash
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