Actel Fusion Mixed-Signal FPGAs
Table 2-19 • Flash Memory Block Pin Names (continued)
Interface Name
Width Direction
2 Out
Description
STATUS[1:0]
Status of the last operation completed:
00: Successful completion
01: Read-/Unprotect-Page: single error detected and corrected
Write: operation addressed a write-protected page
Erase-Page: protection violation
Program: Page Buffer is unmodified
Protection violation
10: Read-/Unprotect-Page: two or more errors detected
11: Write: attempt to write to another page before programming
current page
Erase-Page/Program: page write count has exceeded the 10-year
retention threshold
UNPROTECTPAGE
1
In
When asserted, the page addressed is copied into the Page Buffer and
the Page Buffer is made writable.
WD[31:0]
WEN
32
1
In
In
Write data
When asserted, stores WD in the page buffer.
All flash memory block input signals are active high, except for RESET.
Preliminary v1.7
2-43
ACTEL [ Actel Corporation ]
