M28W640EC-ZB 데이터 시트보기 (PDF) - STMicroelectronics
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M28W640EC-ZB Datasheet PDF : 55 Pages
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M28W640ECT, M28W640ECB
Figure 9. Read AC Waveforms
A0-A21
E
G
DQ0-DQ15
tAVQV
tAVAV
VALID
tELQV
tELQX
tGLQX
tGLQV
VALID
ADDR. VALID
CHIP ENABLE
OUTPUTS
ENABLED
DATA VALID
tAXQX
tEHQX
tEHQZ
tGHQX
tGHQZ
STANDBY
AI04387
Table 16. Read AC Characteristics
Symbol Alt
Parameter
M28W640EC
70
85
90
tAVAV
tRC Address Valid to Next Address Valid
Min
70(3)
85
90
tAVQV tACC Address Valid to Output Valid
Max
70(3)
85
90
tAXQX (1) tOH Address Transition to Output Transition
Min
0
0
0
tEHQX (1) tOH Chip Enable High to Output Transition
Min
0
0
0
tEHQZ (1) tHZ Chip Enable High to Output Hi-Z
Max
20
20
25
tELQV (2) tCE Chip Enable Low to Output Valid
Max
70(3)
85
90
tELQX (1) tLZ Chip Enable Low to Output Transition
Min
0
0
0
tGHQX (1) tOH Output Enable High to Output Transition Min
0
0
0
tGHQZ (1) tDF Output Enable High to Output Hi-Z
Max
20
20
25
tGLQV (2) tOE Output Enable Low to Output Valid
Max
20
20
30
tGLQX (1) tOLZ Output Enable Low to Output Transition Min
0
0
0
Note: 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.
3. To be characterized.
Unit
10
100
ns
100
ns
0
ns
0
ns
25
ns
100
ns
0
ns
0
ns
25
ns
30
ns
0
ns
24/55
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