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參數(shù)資料
| 型號： | 28F640W30 |
| 廠商： | Intel Corp. |
| 元件分類： | DRAM |
| 英文描述： | 1.8 Volt Intel Wireless Flash Memory with 3 Volt I/O and SRAM (W30) |
| 中文描述： | 1.8伏英特爾無線閃存的3伏的I / O和SRAM（寬30） |
| 文件頁數(shù)： | 73/82頁 |
| 文件大?。?/td> | 749K |
| 代理商： | 28F640W30 |
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28F6408W30, 28F3204W30, 28F320W30, 28F640W30
Preliminary
67
Figure 36. Protection Register Programming Flowchart
FULL STATUS CHECK PROCEDURE
Protection Program operations addresses must be within the
protection register address space. Addresses outside this
space will return an error.
Repeat for subsequent programming operations.
Full Status register check can be done after each program or
after a sequence of program operations.
Write FFh after the last operation to enter read array mode.
SR.3 MUST be cleared before the Write State Machine will
allow further program attempts.
Only the Clear Staus Register command clears SR.1, 3, 4.
If an error is detected, clear the Status register before
attempting a program retry or other error recovery.
Yes
No
1,1
0,1
1,1
PROTECTION REGISTER PROGRAMMING PROCEDURE
Start
Write C0h
Addr=Prot addr
Write Protect.
Register
Address / Data
Read Status
Register
SR.7 = 1
Full Status
Check
(if desired)
Program
Complete
Read Status
Register Data
Program
Successful
SR.3, SR.4 =
SR.1, SR.4 =
SR.1, SR.4 =
V
PP
Range Error
Programming Error
Locked-Register
Program Aborted
Standby
Standby
OpBus
SR.1 SR.3 SR.4
0
1
1
V
PP
Error
0
0
1
Prot. Reg.
Prog. Error
Comments
Write
Write
Standby
Protection
Program
Setup
Protection
Program
Data = C0H
Addr = First Location to Program
Data = Data to Program
Addr = Location to Program
Check SR.7
1 = WSM Ready
0 = WSM Busy
OpBus
Comments
Read
Status Register Data Toggle CE# or
OE# to Update Status Register Data
Standby
1
0
1
Register Locked:
Aborted
PROTFLOW.WMF
Program Setup
Confirm Data
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