HY29F800A Hynix Semiconductor, HY29F800A Datasheet - Page 18

• Manufacturer Part Number: HY29F800A
• Description: Flash Memory
• Manufacturer: Hynix Semiconductor

HY29F800A
all further sector erase data cycles or commands
(other than Erase Suspend) are ignored until the
erase operation is complete. If DQ[3] is a ‘0’, the
device will accept a sector erase data cycle to mark
an additional sector for erasure. To ensure that
18
(Note 4)
Notes:
1. During programming, the program address.
2. Recheck DQ[6] since toggling may stop at the same time as DQ[5] changes from 0 to 1.
3. Use this path if testing for Program/Erase status.
4. Use this path to test whether sector is in Erase Suspend mode.
N O
During sector erase, an address within any sector scheduled for erasure.
at Valid Address (Note 1)
at Valid Address (Note 1)
PROGRAM/ERASE
(Note 3)
DQ[6] Toggled?
Read DQ[7:0]
Read DQ[7:0]
C O M P L E T E
N O
START
Y E S
Figure 8. Toggle Bit I and II Test Algorithm
N O
N O
EXCEEDED TIME ERROR
at Valid Address (Note 1)
PROGRAM/ERASE
DQ[6] Toggled?
Read DQ[7:0]
DQ[5] = 1?
(Note 2)
Y E S
Y E S
the data cycles have been accepted, the system
software should check the status of DQ[3] prior to
and following each subsequent sector erase data
cycle. If DQ[3] is high on the second status check,
the last data cycle might not have been accepted.
IS IN ERASE SUSPEND
SECTOR BEING READ
DQ[2] Toggled?
Read DQ[7:0]
Read DQ[7:0]
Y E S
N O
IS NOT IN ERASE SUSPEND
SECTOR BEING READ
Rev. 1.1/Feb 02