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AT45DB321D-SU-SL955 参数 Datasheet PDF下载

AT45DB321D-SU-SL955图片预览
型号: AT45DB321D-SU-SL955
PDF下载: 下载PDF文件 查看货源
内容描述: 32兆位2.7伏的DataFlash [32-megabit 2.7-volt DataFlash]
分类和应用:
文件页数/大小: 57 页 / 1838 K
品牌: ATMEL [ ATMEL ]
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AT45DB321D  
CS  
9FH  
SI  
Opcode  
1FH  
27H  
00H  
01H  
Data  
Data  
SO  
Manufacturer ID  
Byte 1  
Device ID  
Byte 2  
Device ID  
Byte 3  
Extended  
Device  
Information  
String Length  
Extended  
Device  
Information  
Byte x  
Extended  
Device  
Information  
Byte x + 1  
Each transition  
represents 8 bits  
This information would only be output  
if the Extended Device Information String Length  
value was something other than 00H.  
Note:  
Based on JEDEC publication 106 (JEP106), Manufacturer ID data can be comprised of any number of bytes. Some manufacturers may have  
Manufacturer ID codes that are two, three or even four bytes long with the first byte(s) in the sequence being 7FH. A system should detect code  
7FH as a “Continuation Code” and continue to read Manufacturer ID bytes. The first non-7FH byte would signify the last byte of Manufacturer ID  
data. For Atmel (and some other manufacturers), the Manufacturer ID data is comprised of only one byte.  
14.2 Operation Mode Summary  
The commands described previously can be grouped into four different categories to better  
describe which commands can be executed at what times.  
Group A commands consist of:  
1. Main Memory Page Read  
2. Continuous Array Read  
3. Read Sector Protection Register  
4. Read Sector Lockdown Register  
5. Read Security Register  
Group B commands consist of:  
1. Page Erase  
2. Block Erase  
3. Sector Erase  
4. Chip Erase  
5. Main Memory Page to Buffer 1 (or 2) Transfer  
6. Main Memory Page to Buffer 1 (or 2) Compare  
7. Buffer 1 (or 2) to Main Memory Page Program with Built-in Erase  
8. Buffer 1 (or 2) to Main Memory Page Program without Built-in Erase  
9. Main Memory Page Program through Buffer 1 (or 2)  
10. Auto Page Rewrite  
Group C commands consist of:  
1. Buffer 1 (or 2) Read  
2. Buffer 1 (or 2) Write  
3. Status Register Read  
4. Manufacturer and Device ID Read  
27  
3597N–DFLASH–04/09