D A T A S H E E T
AC CHARACTERISTICS
Word/Byte Configuration (BYTE#)
Parameter
Speed Options
JEDEC
Std
Description
-45
-50
-55
5
-70
-90
Unit
ns
t
ELFL/tELFH CE# to BYTE# Switching Low or High
Max
Max
Min
tFLQZ
tFHQV
BYTE# Switching Low to Output HIGH Z
BYTE# Switching High to Output Active
15
45
15
50
15
55
20
70
20
90
ns
ns
CE#
OE#
BYTE#
tELFL
Data Output
(DQ0–DQ14)
Data Output
(DQ0–DQ7)
BYTE#
Switching
from word
to byte
DQ0–DQ14
Address
Input
DQ15
Output
mode
DQ15/A-1
tFLQZ
tELFH
BYTE#
BYTE#
Switching
from byte
to word
Data Output
(DQ0–DQ7)
Data Output
(DQ0–DQ14)
DQ0–DQ14
DQ15/A-1
mode
Address
Input
DQ15
Output
tFHQV
Figure 11. BYTE# Timings for Read Operations
CE#
The falling edge of the last WE# signal
WE#
BYTE#
tSET
(tAS
)
tHOLD (tAH
)
Note:
Refer to the Erase/Program Operations table for tAS and tAH specifications.
Figure 12. BYTE# Timings for Write Operations
28
Am29F400B
21505E8 November 11, 2009
CYPRESS [ CYPRESS ]
