Atmel AT45D021
The AT45D021 is a 5-volt only, serial interface Flash memory suitable for in-system reprogramming. Its 2,162,688 bits of memory are organized as 1024 pages of 264bytes each. The buffers allow receiving of data while a page in the main memory is being reprogrammed.| Part No. | AT45D021 |
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| Datasheet | AT45D021 Download |
| Manufacturer |  Atmel |
| Description | 2-Megabit 5-volt Only Serial DataFlash |
| Buy | Stock & Price |
FEATURES
● Single 4.5V - 5.5V Supply● Serial Interface Architecture
● Page Program Operation
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● – Single Cycle Reprogram (Erase and Program) – 1024 Pages (264 Bytes/Page) Main Memory Two 264-Byte SRAM Data Buffers – Allows Receiving of Data while Reprogramming of Nonvolatile Memory Internal Program and Control Timer Fast Page Program Time – 7 ms Typical 80 µs Typical Page to Buffer Transfer Time Low Power Dissipation – 15 mA Active Read Current Typical – 15 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 2-Megabit 5-volt Only Serial DataFlash® AT45D021
DESCRIPTION
In addition to the main memory, the AT45D021 also contains two data SRAM buffers of 264-bytes each. 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.
