AM28F020-120EC AMD [Advanced Micro Devices], AM28F020-120EC Datasheet - Page 28
AM28F020-120EC
Manufacturer Part Number
AM28F020-120EC
Description
2 Megabit (256 K x 8-Bit) CMOS 12.0 Volt, Bulk Erase Flash Memory
Manufacturer
AMD [Advanced Micro Devices]
Datasheet
1.AM28F020-120EC.pdf
(35 pages)
- Current page: 28 of 35
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KEY TO SWITCHING WAVEFORMS
SWITCHING WAVEFORMS
28
Addresses
WE# (W#)
Data (DQ)
OE# (G#)
CE# (E#)
5.0 V
V
0 V
CC
WAVEFORM
t
VCS
Power-up, Standby
High Z
Don’t Care, Any Change Permitted
Address Selection
Figure 7. AC Waveforms for Read Operations
t
WHGL
Device and
Does Not Apply
t
t
Addresses Stable
ELQX
AVQV
INPUTS
t
ELQV
(t
(t
LZ
ACC
t
(t
)
GLQV
CE
)
)
Am28F020
(t
Enabled
Outputs
OE
t
t
AVAV
GLQX
)
(t
(t
RC
Changing from H to L
Changing from L to H
OLZ
)
Data
Valid
)
Steady
Output Valid
Center Line is High Impedance State (High Z)
t
AXQX
Changing, State Unknown
(t
OH
)
OUTPUTS
Standby, Power-Down
t
t
(t
GHQZ
(t
EHQZ
DF
DF
)
)
High Z
14727F-14
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