參數(shù)資料
型號: AM28F256A-90PI
廠商: ADVANCED MICRO DEVICES INC
元件分類: PROM
英文描述: 8-Bit Identity/Magnitude Comparators 20-SOIC 0 to 70
中文描述: 32K X 8 FLASH 12V PROM, 90 ns, PDIP32
封裝: PLASTIC, DIP-32
文件頁數(shù): 26/35頁
文件大?。?/td> 456K
代理商: AM28F256A-90PI
26
Am28F256A
KEY TO SWITCHING WAVEFORMS
SWITCHING WAVEFORMS
WAVEFORM
INPUTS
OUTPUTS
Steady
Changing from H to L
Changing from L to H
Don’t Care, Any Change Permitted
Changing, State Unknown
Does Not Apply
Center Line is High Impedance State (High Z)
Addresses
CE#
OE# (G#)
WE# (W#)
Data (DQ)
5.0 V
V
CC
0 V
Power-up, Standby
Device and
Address Selection
Outputs
Enabled
Data
Valid
Standby, Power-down
Addresses Stable
High Z
High Z
t
WHGL
t
AVQV
(t
ACC
)
t
EHQZ
(t
DF
)
t
GHQZ
(t
DF
)
t
ELQX
(t
LZ
)
t
GLQX
(t
OLZ
)
t
ELQV
(t
CE
)
t
GLQV
(t
OE
)
t
AXQX
(t
OH
)
Output Valid
t
AVAV
(t
RC
)
t
VCS
18879C-18
Figure 9.
AC Waveforms for Read Operations
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參數(shù)描述
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