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M28W640HCT Datasheet, PDF (35/72 Pages) Numonyx B.V – 64 Mbit (4 Mb x 16, boot block) 3 V supply Flash memory
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M28W640HCT, M28W640HCB
DC and AC parameters
Figure 8. Read AC waveforms
A0-A21
tAVQV
tAVAV
VALID
E
tELQV
tELQX
G
tGLQV
DQ0-
DQ15
tGLQX
VALID
tAXQX
tEHQX
tEHQZ
tGHQX
tGHQZ
ADDR. VALID
CHIP ENABLE
OUTPUTS
ENABLED
DATA VALID
STANDBY
AI04387
Table 16. Read AC characteristics
Symbol Alt
Parameter
M28W640HCT,
M28W640HCB
70 ns
Unit
tAVAV
tRC Address valid to Next Address Valid
Min
70
ns
tAVQV
tACC Address valid to Random Output Valid
Max
70
ns
tAXQX(1)
tOH Address Transition to Output Transition
Min
0
ns
tEHQX(1)
tOH Chip Enable High to Output Transition
Min
0
ns
tEHQZ(1)
tHZ Chip Enable High to Output Hi-Z
Max
20
ns
tELQV(2)
tCE Chip Enable Low to Output Valid
Max
70
ns
tELQX(1)
tLZ Chip Enable Low to Output Transition
Min
0
ns
tGHQX(1)
tOH Output Enable High to Output Transition
Min
0
ns
tGHQZ(1)
tDF Output Enable High to Output Hi-Z
Max
20
ns
tGLQV(2)
tOE Output Enable Low to Output Valid
Max
20
ns
tGLQX(1) tOLZ Output Enable Low to Output Transition
Min
0
ns
tAVQV1 tPAGE Page address Valid to Page Output Valid
Max
25
ns
tAXQX1
tOH Address Transition to Page Output Transition Min
0
ns
1. Sampled only, not 100% tested.
2. G may be delayed by up to tELQV - tGLQV after the falling edge of E without increasing tELQV.
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