W78M32VP-XBX
Figure 6 – WRITE BUFFER PROGRAMMING OPERATION
Write Unlock Cycles:
Unlock Cycle 1
Address 555h, Data AAh
Unlock Cycle 2
Address 2AAh, Data 55h
Issue
Write Buffer Load Command:
Address SA, Data 25h
Load Word Count to Program
Program Data to Address:
SA, wc
wc = number of words – 1
Yes
Confirm command:
wc = 0?
No
SA = 0x29h
Perform Polling Algorithm
(see Write Operation Status
flowchart)
Write Next Word,
Decrement wc:
wc = wc – 1
No
Write Buffer
Abort Desired?
Yes
Yes
Polling Status
= Done?
Write to a Different
Sector Address to Cause
Write Buffer Abort
No
No
Error?
Yes
Yes
Write Buffer
Abort?
No
RESET. Issue Write Buffer
Abort Reset Command
PASS. Device is in
read mode.
FAIL. Issue reset command
to return to read array mode.
Microsemi Corporation reserves the right to change products or specifications without notice.
August 2011 © 2011 Microsemi Corporation. All rights reserved.
Rev. 15
28
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