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AT52SC1283J 数据表(PDF) 18 Page - ATMEL Corporation

部件名 AT52SC1283J
功能描述  128-Mbit Flash 32-Mbit/64-Mbit
PDF  52 Pages
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制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

AT52SC1283J 数据表(HTML) 18 Page - ATMEL Corporation

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18
3530B–STKD–2/4/05
AT52SC1283J/1284J [Preliminary]
6.33
Protection Register Programming
Flowchart
1
0
Start
Write C0,
PR Address
Write PR
Address & Data
Read Status
Register
SR7 =
Full Status
Check
(If Desired)
Program
Complete
(Program Setup)
(Confirm Data)
6.34
Protection Register Programming
Procedure
Bus
Operation
Command
Comments
Write
Program
PR Setup
Data = C0
Addr = First Location to Program
Write
Protection
Program
Data = Data to Program
Addr = Location to Program
Read
None
Status register data: Toggle CE
or
OE to update status register data
Idle
None
Check SR7
1 = WSMS Ready
0 = WSMS Busy
Program Protection Register operation 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 FF after the last operation to return to the Read mode.
6.35
Full Status Check Flowchart
0, 1
1, 1
Read Status
Register Data
Program
Successful
=
V
PP Range Error
Program Error
Register Locked;
Program Aborted
0
0
SR1, SR4
SR1, SR4
SR3, SR4
=
0
=
1, 1
6.36
Full Status Check Procedure
Bus
Operation
Command
Comments
Idle
None
Check SR1, SR3, SR4:
0,1,1 = VPP Range Error
Idle
None
Check SR1, SR3, SR4:
0,0,1 = Programming Error
Idle
None
Check SR1, SR3, SR4:
1, 0,1 = Sector locked; operation
aborted
SR3 must be cleared before the Write State Machine allows
further program attempts.
Only the Clear Status Register command clears SR1, SR3,
SR4.
If an error is detected, clear the status register before
attempting a program retry or other error recovery.



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