at49lw080 ATMEL Corporation, at49lw080 Datasheet - Page 20

• Manufacturer Part Number: at49lw080
• Description: 8-megabit Firmware Hub Flash Memory
• Manufacturer: ATMEL Corporation

7.9
Notes:
20
B7
B6
B5
B4
B3
B2
B1
B0
Status Register Definition
1. Check B7 to determine sector erase or program completion. B6 - B0 are invalid while B7 = “0”.
2. If both B5 and B4 are “1”s after a sector erase attempt, an improper command sequence was entered.
3. B3 does not provide a continuous indication of V
4. B1 does not provide a continuous indication of Write Lock bit, TBL pin or WP pin values. The WSM interrogates the Write
5. B0 is reserved for future use and should be masked out when polling the status register.
AT49LW080
tor erase or program operation. B3 is not guaranteed to report accurate feedback only when V
Lock bit, TBL pin or WP pin only after a sector erase or program operation. Depending on the attempted operation, it informs
the system whether or not the selected sector is locked.
Write State Machine Status
Erase Suspend Status
Erase Status
Program Status
V
Program Suspend Status
Device Protect Status
Reserved for Future Enhancements
PP
Status
(3)
(2)
(4)
(1)
(5)
PP
level. The WSM interrogates and indicates the V
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Ready
Busy
Sector Erase Suspended
Sector Erase in Progress/Completed
Error in Sector Erasure
Successful Sector Erase
Error in Program
Successful Program
V
V
Program Suspended
Program in Progress/Completed
Write Lock Bit, TBL Pin or WP Pin Detected, Operation Abort
Unlock
PP
PP
Low Detect, Operation Abort
OK
PP
≠ V
PP
PPH1/2
level only after a sec-
.
1966G–FLASH–3/05