e28f016xd Intel Corporation, e28f016xd Datasheet - Page 16

• Manufacturer Part Number: e28f016xd
• Description: 16-mbit 1 Mbit X 16 Dram-interface Flash Memory
• Manufacturer: Intel Corporation

28F016XD FLASH MEMORY
4.4 Compatible Status Register
16
CSR.7 = WRITE STATE MACHINE STATUS
CSR.6 = ERASE-SUSPEND STATUS
CSR.5 = ERASE STATUS
CSR.4 = DATA-WRITE STATUS
CSR.3 = V
CSR.2–0 = RESERVED FOR FUTURE ENHANCEMENTS
These bits are reserved for future use; mask them out when polling the CSR.
WSMS
7
1 = Ready
0 = Busy
1 = Erase Suspended
0 = Erase In Progress/Completed
1 = Error In Block Erasure
0 = Successful Block Erase
1 = Error in Data Program
0 = Data Program Successful
1 = V
0 = V
PP
STATUS
PP
PP
ESS
6
Error Detect, Operation Abort
OK
ES
5
DWS
4
RY/BY# output or WSMS bit must be checked to
determine completion of an operation (erase,
erase suspend, or data program) before the
appropriate Status bit (ESS, ES or DWS) is
checked for success.
If DWS and ES are set to “1” during an erase
attempt, an improper command sequence was
entered. Clear the CSR and attempt the
operation again.
The VPPS bit, unlike an A/D converter, does not
provide continuous indication of V
WSM interrogates V
Program or Erase command sequences have
been entered, and informs the system if V
not been switched on. VPPS is not guaranteed to
report accurate feedback between V
and V
V
PPH2
VPPS
3
PPH1
(min) and above V
(min), between V
R
2
PP
NOTES:
’s level only after the Data
PPH2
PPH1
(max).
R
1
(max) and
PP
PPLK
level. The
E
(max)
PP
R
0
has