EN29LV641H/L EN29LV640U
Flowchart 4. DATA# Polling Algorithm
Start
Read DQ7-DQ0
Adr = VA
Yes
DQ7 = Data?
No
No
DQ5 = 1?
Yes
Notes:
1. VA = Valid address for programming.
During a sector erase operation, a valid
address is any sector address within the
sector being erased. During chip erase, a
valid address is any non-protected sector
address.
Read DQ7-DQ0
Adr = VA
2. DQ7 should be re-checked even if DQ5 =
“1” in case the first set of reads was done
at the exact instant when the status data
was in transition.
Yes
DQ7 = Data?
No
Fail
Pass
Flowchart 5. Toggle Bit Algorithm
Start
Read DQ7-DQ0 twice
No
DQ6 = Toggle?
Yes
No
DQ5 = 1?
Yes
Notes:
Read DQ7-DQ0
1. The system should be re-checked the toggle
bit even if DQ5 = “1” in case the first set of
reads was done at the exact instant when
the status data was in transition.
No
DQ6 = Toggle?
Yes
Fail
Pass
This Data Sheet may be revised by subsequent versions
or modifications due to changes in technical specifications.
©2005 Eon Silicon Solution, Inc., www.essi.com.tw
27
Rev. B, Issue Date: 2005/06/27
EON [ EON SILICON SOLUTION INC. ]
