P R E L I M I N A R Y
FLASH AC CHARACTERISTICS
Word/Byte Configuration (CIOf)
Parameter
Speed
JEDEC
Std
Description
70
85
Unit
ns
t
ELFL/tELFH
CE#f to CIOf Switching Low or High
CIOf Switching Low to Output HIGH Z
CIOf Switching High to Output Active
Max
Max
Min
5
tFLQZ
tFHQV
30
ns
70
85
ns
CE#f
OE#
CIOf
tELFL
Data Output
(DQ14–DQ0)
Data Output
(DQ7–DQ0)
CIOf
DQ0–DQ14
Switching
from word
to byte
Address
Input
DQ15
Output
mode
DQ15/A-1
tFLQZ
tELFH
CIOf
CIOf
Switching
from byte
to word
Data Output
(DQ7–DQ0)
Data Output
(DQ14–DQ0)
DQ0–DQ14
mode
Address
Input
DQ15
Output
DQ15/A-1
tFHQV
Figure 16. CIOf Timings for Read Operations
CE#f
WE#
The falling edge of the last WE# signal
CIOf
tSET
(tAS
)
tHOLD (tAH
)
Note: Refer to the Erase/Program Operations table for tAS and tAH specifications.
Figure 17. CIOf Timings for Write Operations
44
Am49DL32xBG
July 19, 2002
CYPRESS [ CYPRESS ]
