AM28F512 Advanced Micro Devices, AM28F512 Datasheet - Page 28

• Manufacturer Part Number: AM28F512
• Description: 512 Kilobit (64 K x 8-Bit) CMOS 12.0 Volt/ Bulk Erase Flash Memory
• Manufacturer: Advanced Micro Devices

KEY TO SWITCHING WAVEFORMS
SWITCHING WAVEFORMS
28
Addresses
WE# (W#)
Data (DQ)
OE# (G#)
CE# (E#)
5.0 V
V
WAVEFORM
0 V
CC
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
t
t
Addresses Stable
ELQX
AVQV
Does Not Apply
t
ELQV
INPUTS
(t
(t
LZ
ACC
t
(t
)
GLQV
CE
)
)
(t
Am28F512
Enabled
Outputs
OE
t
t
AVAV
GLQX
)
(t
(t
RC
OLZ
Changing from H to L
Changing from L to H
)
Data
Valid
)
Output Valid
Steady
Center Line is High Impedance State (High Z)
t
AXQX
(t
Changing, State Unknown
OH
)
OUTPUTS
Standby, Power-down
t
t
EHQZ
(t
GHQZ
(t
DF
DF
)
)
High Z
11561G-16