參數(shù)資料
型號(hào): S29CD016G0JFFM012
廠商: Spansion Inc.
英文描述: 32 Megabit (1M x 32-Bit), 16 Megabit (512K x 32-Bit) 2.5 Volt-only Burst Mode, Dual Boot, Simultaneous Read/ Write Flash Memory with VersatileI/O
中文描述: 32兆位(1米× 32位),16兆位(512k × 32的位),2.5伏,只有突發(fā)模式,雙啟動(dòng),同步讀/寫閃存與VersatileI內(nèi)存/輸出
文件頁數(shù): 62/87頁
文件大?。?/td> 792K
代理商: S29CD016G0JFFM012
60
S29CD-G Flash Family
S29CD-G_00_B0 November 14, 2005
P r e l i m i n a r y
Notes:
1.
2.
Read toggle bit with two immediately consecutive reads to determine whether or not it is toggling.
Recheck toggle bit because it may stop toggling as DQ5 changes to
1
.
Figure 7. Toggle Bit Algorithm
DQ5: Exceeded Timing Limits
DQ5 indicates whether the program or erase time exceeded a specified internal pulse count limit.
Under these conditions DQ5 produces a
1
. This is a failure condition that indicates the program
or erase cycle was not successfully completed.
The DQ5 failure condition may appear if the system tries to program a
1
to a location that is pre-
viously programmed to
0
.
Only an erase operation can change a
0
back to a
1
.
Under this
condition, the device halts the operation, and when the operation exceeds the timing limits, DQ5
produces a
1
.
Under both these conditions, the system must issue the reset command to return the device to
reading array data.
START
No
Yes
Yes
DQ5 = 1
No
Yes
DQ6 = Toggle
No
Read Byte
(DQ0-DQ7)
Address = VA
DQ6 = Toggle
Read Byte Twice
(DQ 0-DQ7)
Adrdess = VA
Read Byte
(DQ0-DQ7)
Address = VA
FAIL
PASS
(Note 1)
(Notes
1
,
2
)
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