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(shè)備運(yùn)行狀態(tài)位
文件頁數(shù)： 9/12頁
文件大小： 127K
代理商： 22152
8
Using the Operation Status Bits in AMD Devices
July 24, 2002
S U P P L E M E N T
Figure 7.
DQ3 Sector Erase Timer
Figure 8.
Write-to-Buffer Abort
Write Sector Erase
Unlock/Set-Up Cycles
Sector Erase
Command Cycle
DQ3 = 1
No
Yes
Last Sector
Erase Command
Not Accepted
Write Next Sector
Address and Sector
Erase Command
DQ3 = 1
Yes
No
Write-to-Buffer
Command Cycle
Load Address and
Data Count
Data Count = 0
Yes
No
DQ1=0
Yes
Write Program Buffer
to Flash Confirm
Command Cycle
Write Next Address
and Data Pair
Decrement
Data Count
Write
“Write-to-Buffer”
Unlock/Set-up Cycles
No
Write to a Different
Sector Address
Write-to-Buffer Abort
Condition. Must Write
“Write-to-Buffer
Abort Reset”
Command Sequence
to Return to
Read Mode
Read DQ7-DQ0 with
Addr= Last Loaded
Addr
DQ7= Data
DQ7= Data
Read DQ7-DQ0 with
Addr= Last Loaded
Addr
DQ7= Data
FAIL or ABORT
PASS
Note:
1. User must reset the device to return to read mode when
(1) Sector Erase Timer has expired or (2) Write-to-Buffer
Abort condition has occured.
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