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AB28F800B5T80 Datasheet(PDF) 22 Page - Intel Corporation

Part # AB28F800B5T80
Description  5 VOLT BOOT BLOCK FLASH MEMORY
Download  44 Pages
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Manufacturer  INTEL [Intel Corporation]
Direct Link  http://www.intel.com
Logo INTEL - Intel Corporation

AB28F800B5T80 Datasheet(HTML) 22 Page - Intel Corporation

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28F200B5, 28F004/400B5, 28F800B5
E
22
PRELIMINARY
SR.7 =
0
1
Start
Write 20H,
Block Address
Write D0H and
Block Address
Full Status
Check if Desired
Block Erase
Complete
FULL STATUS CHECK PROCEDURE
1
0
Read Status Register
Data (See Above)
1
0
Read Status
Register
V
Range Error
PP
Suspend
Erase
Suspend Erase
Loop
YES
NO
1
0
Command Sequence
Error
SR.3 =
SR.5 =
SR.4,5 =
Block Erase
Error
Bus
Operation
Command
Comments
Standby
Check SR.4,5
Both 1 = Command
Sequence Error
Standby
Check SR.3
1 = V
Low Detect
SR.3 MUST be cleared, if set during an erase attempt, before further
attempts are allowed by the Write State Machine.
SR.5 is only cleared by the Clear Status Register Command, in
cases where multiple blocks are erase before full status is checked.
If error is detected, clear the Status Register before attempting
retry or other error recovery.
Check SR.5
1 = Block Erase Error
Standby
Bus
Operation
Command
Comments
Write
Write
Erase Setup
Read
Data = 20H
Addr = Within Block to be Erased
Check SR.7
1 = WSM Ready
0 = WSM Busy
Repeat for subsequent block erasures.
Full Status Check can be done after each block erase, or after a
sequence of block erasures.
Write FFH after the last operation to reset device to read array mode.
Status Register Data
Toggle CE# or OE#
to Update Status Register
Standby
Erase
Confirm
Data = D0H
Addr = Within Block to be Erased
Block Erase
Successful
PP
0599-08
Figure 9. Automated Block Erase Flowchart


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