at45db021a ATMEL Corporation, at45db021a Datasheet - Page 24

• Manufacturer Part Number: at45db021a
• Description: 2-megabit 2.7-volt Only Serial Dataflash
• Manufacturer: ATMEL Corporation

Figure 1. Algorithm for Sequentially Programming or Reprogramming the Entire Array
Notes:
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1. This type of algorithm is used for applications in which the entire array is programmed sequentially, filling the array
2. A page can be written using either a Main Memory Page Program operation or a Buffer Write operation followed by a Buffer
3. The algorithm above shows the programming of a single page. The algorithm will be repeated sequentially for each page
page-by-page.
to Main Memory Page Program operation.
within the entire array.
AT45DB021A
MAIN MEMORY PAGE PROGRAM
THROUGH BUFFER
(82H, 85H)
START
END
provide address
and data
MEMORY PAGE PROGRAM
BUFFER TO MAIN
BUFFER WRITE
(84H, 87H)
(83H, 86H)