P R E L I M I N A R Y
FLASH AC CHARACTERISTICS
tAHT
tAS
Addresses
CE#f
tAHT
tASO
tCEPH
tOEH
WE#
tOEPH
OE#
tDH
Valid Data
tOE
Valid
Status
Valid
Status
Valid
Status
DQ6/DQ2
Valid Data
(first read)
(second read)
(stops toggling)
RY/BY#
Note: VA = Valid address; not required for DQ6. Illustration shows first two status cycle after command sequence, last status
read cycle, and array data read cycle.
Figure 23. Toggle Bit Timings (During Embedded Algorithms)
Enter
Embedded
Erasing
Erase
Suspend
Enter Erase
Suspend Program
Erase
Resume
Erase
Erase Suspend
Read
Erase
Suspend
Program
Erase
Complete
WE#
Erase
Erase Suspend
Read
DQ6
DQ2
Note: DQ2 toggles only when read at an address within an erase-suspended sector. The system may use OE# or CE#f to
toggle DQ2 and DQ6.
Figure 24. DQ2 vs. DQ6
July 19, 2002
Am49DL32xBG
49
CYPRESS [ CYPRESS ]
