AM29F800T Datasheet, PDF (22/41 Pages) Advanced Micro Devices – 8 Megabit (1,048,576 x 8-Bit/524,288 x 16-Bit) CMOS 5.0 Volt-only, Sector Erase Flash Memory

PRELIMINARY
Start
Read Byte
(DQ0–DQ7)
Addr=Don’t Care
No
DQ6=Toggle
?
Yes
No
DQ5=1
?
Yes
Read Byte
(DQ0–DQ7)
Addr=Don’t Care
No
DQ6=Toggle
?
Yes
Pass
Fail
20375C-9
Note:
1. DQ6 is rechecked even if DQ5 = “1” because DQ6 may stop toggling at the same time as DQ5 changing to “1”.
Figure 4. Toggle Bit Algorithm
20 ns
20 ns
+0.8 V
–0.5 V
–2.0 V
20 ns
Figure 5. Maximum Negative Overshoot Waveform
20 ns
V_CC + 2.0 V
V_CC + 0.5 V
2.0 V
20 ns
20 ns
Figure 6. Maximum Positive Overshoot Waveform
20375C-10
20375C-11
22
Am29F800T/Am29F800B
8/18/97