24LC65 Datasheet

  • 24LC65

  • 64K I2C™ Smart Serial™ EEPROM

  • 564.35KB

  • 24页

  • Microchip

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24LC65
FIGURE 8-2:
CACHE WRITE TO THE ARRAY STARTING AT A PAGE BOUNDARY
1 Write command initiated at byte 0 of page 3 in the array;
First data byte is loaded into the cache byte 0.
cache page 0
cache
byte 0
cache
byte 1
鈥?鈥?鈥?/div>
cache
byte 7
cache page 1 cache page 2
bytes 8-15
bytes 16-23
鈥?鈥?鈥?/div>
cache page 7
bytes 56-63
2 64 bytes of data are loaded into cache.
3 Write from cache into array initiated by STOP bit.
Page 0 of cache written to page 3 of array.
Write cycle is executed after every page is written.
page 0 page 1 page 2
page 0 page 1 page 2
byte 0
byte 1
鈥?鈥?鈥?/div>
4 Remaining pages in cache are written
to sequential pages in array.
byte 7
page 4
page 4
鈥?鈥?鈥?/div>
鈥?鈥?鈥?/div>
page 7 array row n
page 7 array row n + 1
page 3
5 Last page in cache written to page 2 in next row.
FIGURE 8-3:
CACHE WRITE TO THE ARRAY STARTING AT A NON-PAGE BOUNDARY
1 Write command initiated; 64 bytes of data
loaded into cache starting at byte 2 of page 0.
cache
byte 1
cache
byte 2
cache
byte 7
2 Last 2 bytes loaded 'roll over'
to beginning.
cache page 7
bytes 56-63
Last 2 bytes
loaded into
page 0 of cache.
3
cache
byte 0
鈥?鈥?鈥?/div>
cache page 1 cache page 2
bytes 8-15
bytes 16-23
鈥?鈥?鈥?/div>
4 Write from cache into array initiated by STOP bit.
5 Remaining bytes in cache are
Page 0 of cache written to page 3 of array.
Write cycle is executed after every page is written.
written sequentially to array.
page 7 array
row n
page 7 array
row
n+1
page 0 page 1 page 2
page 0 page 1 page 2
byte 0
byte 1
byte 2
byte 3
page 3
byte 4
鈥?鈥?鈥?/div>
byte 7
page 4
page 4
鈥?鈥?鈥?/div>
鈥?鈥?鈥?/div>
6 Last 3 pages in cache written to next row in array.
1996 Microchip Technology Inc.
DS21073E-page 11

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