E
FAST BOOT BLOCK DATASHEET
Bus Operation
Command
Comments
Data = 40H
Start
Write
Program Setup Addr = Location to Be
Written
Write 40H,
Address
Data = Data to Be Written
Write
Read
Data
Addr = Location to Be
Written
Write Data and
Address
Status Register Data
Suspend
Program
Loop
Check SR.7
1 = WSM Ready
0 = WSM Busy
Read Status Register
Standby
No
Repeat for subsequent byte writes.
0
Suspend
Program
SR.7 =
1
SR full status check can be done after each byte write or after a
sequence of program operations.
Yes
Write FFH after the last byte write operation to place device in read
array mode.
Full Status
Check if Desired
Program Complete
FULL STATUS CHECK PROCEDURE
Read Status Register
Data (See Above)
Bus Operation
Command
Comments
Check SR.3
1
Standby
SR.3 =
VPP Range Error
1 = VPP Error Detect
Check SR.1
1 = Device Protect Detect
WP# = VIL
0
SR.1 =
0
Standby
Standby
1
1
Device Protect Error
Check SR.4
1 = Data Write Error
SR.4, SR.3 and SR.1 are only cleared by the Clear Staus Register
command, in cases where multiple locations are written before full
status is checked.
SR.4 =
Program Error
0
If an error is detected, clear the status register before attempting retry
or other error recovery.
Program Successful
Figure 8. Automated Program Flowchart
23
PRODUCT PREVIEW
INTEL [ INTEL ]
