Atmel AT45D021A
The AT45D021A 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 264 bytes each. The buffers allow receiving of data while a page in the main memory is being reprogrammed.FEATURES
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● 100% Compatible to AT45D021 Single 4.5V - 5.5V Supply Serial Interface Architecture Page Program Operation – Single Cycle Reprogram (Erase and Program) – 1024 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 2-megabit 5-volt Only Serial DataFlash® AT45D021A Recommend using AT45DB021B for new designs.
DESCRIPTION
In addition to the main memory, the AT45D021A also contains two SRAM data buffers of 264 bytes each. Unlike conventional Flash (continu...