M28R400CT Datasheet, PDF (23/50 Pages) STMicroelectronics – 4 Mbit (256Kb x16, Boot Block) 1.8V Supply Flash Memory

Figure 8. Read AC Waveforms
A0-A17
E
G
DQ0-DQ15
tAVQV
tAVAV
VALID
tELQV
tELQX
tGLQX
tGLQV
VALID
M28R400CT, M28R400CB
tAXQX
tEHQX
tEHQZ
tGHQX
tGHQZ
ADDR. VALID
CHIP ENABLE
OUTPUTS
ENABLED
DATA VALID
STANDBY
AI04144b
Table 15. Read AC Characteristics
Symbol
Alt
Parameter
t_AVAV
t_RC Address Valid to Next Address Valid
Min
t_AVQV
t_ACC Address Valid to Output Valid
Max
t_AXQX ⁽¹⁾
t_OH Address Transition to Output Transition
Min
t_EHQX ⁽¹⁾
t_OH Chip Enable High to Output Transition
Min
t_EHQZ ⁽¹⁾
t_HZ Chip Enable High to Output Hi-Z
Max
t_ELQV ⁽²⁾
t_CE Chip Enable Low to Output Valid
Max
t_ELQX ⁽¹⁾
t_LZ Chip Enable Low to Output Transition
Min
t_GHQX ⁽¹⁾
t_OH Output Enable High to Output Transition
Min
t_GHQZ ⁽¹⁾
t_DF Output Enable High to Output Hi-Z
Max
t_GLQV ⁽²⁾
t_OE Output Enable Low to Output Valid
Max
t_GLQX ⁽¹⁾
t_OLZ Output Enable Low to Output Transition
Min
Note: 1. Sampled only, not 100% tested.
2. G may be delayed by up to t_ELQV - t_GLQV after the falling edge of E without increasing t_ELQV.
M28R400C
90
120
90
120
90
120
0
0
0
0
25
30
90
120
0
0
0
0
25
30
30
35
0
0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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