28F016XS 데이터 시트보기 (PDF) - Intel

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28F016XS

16-MBIT (1 MBIT x 16, 2 MBIT x 8) SYNCHRONOUS FLASH MEMORY

Intel 

28F016XS FLASH MEMORY

E

4.5 Compatible Status Register

WSMS

ESS

ES

DWS

VPPS

R

R

R

7

6

5

4

3

2

1

0

NOTES:

CSR.7 = WRITE STATE MACHINE STATUS

1 = Ready

0 = Busy

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.

CSR.6 = ERASE-SUSPEND STATUS

1 = Erase Suspended

0 = Erase In Progress/Completed

CSR.5 = ERASE STATUS

1 = Error In Block Erasure

0 = Successful Block Erase

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.

CSR.4 = DATA WRITE STATUS

1 = Error in Data Program

0 = Data Program Successful

CSR.3 = VPP STATUS

1 = VPP Error Detect, Operation Abort

0 = VPP OK

The VPPS bit, unlike an A/D converter, does not

provide continuous indication of VPP level. The

WSM interrogates VPP’s level only after the Data

Program or Erase command sequences have

been entered, and informs the system if VPP has

not been switched on. VPPS is not guaranteed to

report accurate feedback between VPPLK(max)

and VPPH1(min), between VPPH1(max) and

VPPH2(min), and above VPPH2(max).

CSR.2–0 = RESERVED FOR FUTURE ENHANCEMENTS

These bits are reserved for future use; mask them out when polling the CSR.

20

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