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AT45DB321E データシート(PDF) 10 Page - Renesas Technology Corp

部品番号 AT45DB321E
部品情報  32-Mbit DataFlash (with Extra 1-Mbits), 2.3 V Minimum SPI Serial Flash Memory
PDF  80 Pages
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メーカー  RENESAS [Renesas Technology Corp]
ホームページ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

AT45DB321E データシート(HTML) 10 Page - Renesas Technology Corp

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DS-AT45DB321E-8784 Rev. N
Page 10
9/1/23
© 2023 Renesas Electronics
AT45DB321E Datasheet
4.
Memory Array
To provide optimal flexibility, the AT45DB321E memory array is divided into three levels of granularity comprising
of sectors, blocks, and pages. Figure 3 shows each level and details the number of pages per sector and block.
Program operations to the DataFlash can be done at the full page level or at the byte level (a variable number of
bytes). The erase operations can be performed at the chip, sector, block, or page level.
Figure 3. Memory Architecture Diagram
Sector 0a = 8 pages
4,096/4,224 bytes
Sector 0b = 120 pages
61,440/63,360 bytes
Block = 4,096/4,224 bytes
8 Pages
Sector 0a
Page = 512/528 bytes
Page 0
Page 1
Page 6
Page 7
Page 8
Page 9
Page 8,190
Page 8,191
Page 14
Page 15
Page 16
Page 17
Page 18
Sector Architecture
Block Architecture
Page Architecture
Block 0
Block 1
Block 14
Block 15
Block 16
Block 17
Block 1,022
Block 1,023
Block 30
Block 31
Block 32
Block 33
Sector 63 = 128 pages
65,536/67,584 bytes
Block 2
Sector 1 = 128 pages
65,536/67,584 bytes
Sector 62 = 128 pages
65,536/67,584 bytes
Sector 2 = 128 pages
65,536/67,584 bytes



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