參數(shù)資料
型號: 22152
元件分類: SRAM
英文描述: 64K Nonvolatile SRAM
中文描述: 使用AMD的設備運行狀態(tài)位
文件頁數(shù): 8/12頁
文件大?。?/td> 127K
代理商: 22152
July 24, 2002
Using the Operation Status Bits in AMD Devices
7
S U P P L E M E N T
Figure 5.
DQ7 Data Polling Sequence for Erase
Completion
Figure 6.
DQ2 and DQ6 Polling Sequence
Note:
The term Toggle indicates that the system will have to read the status bits consecutively and compare them to determine if they
have changed states.
Erase
Command
Sequence
Read DQ7-DQ0
Address = X or VA
DQ7=1
No
Yes
DQ5 = 1
No
Yes
Erase Not
Successful
Read DQ7-DQ0
Address = X or VA
DQ7 = 1
Erase
Completed
No
Yes
Note:
X = Address is a ‘don’t care’ for Chip Erase.
VA = Address of the location being programmed.
Sector Erase
Command
Sequence
Read DQ7-DQ0 Twice
Address = VA
DQ6=Toggle
Yes
No
DQ5 = 1
No
Yes
Sector Erase
Not Successful
Read DQ7-DQ0 Twice
Address = VA
DQ2=Toggle
and
DQ6=Toggle
Sector Erase
Completed
Yes
No
DQ2=Toggle
No
Yes
Sector Erase
Suspended
Note:
VA = Any address within the sector.
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