M29W641DH Datasheet, PDF (23/42 Pages) STMicroelectronics – 64 Mbit 4Mb x16, Uniform Block 3V Supply Flash Memory

M29W641DH, M29W641DL, M29W641DU
Figure 11. Write AC Waveforms, Chip Enable Controlled
A0-A21
tAVAV
VALID
tAVEL
W
tWLEL
G
tGHEL
tELEH
E
tELAX
DQ0-DQ7/
DQ8-DQ15
tDVEH
VALID
tEHWH
tEHGL
tEHEL
tEHDX
VCC
RB
tVCHWL
tEHRL
Note: 1. RB concerns the M29W461DU only.
Table 12. Write AC Characteristics, Chip Enable Controlled
Symbol Alt
Parameter
t_AVAV
t_WC Address Valid to Next Address Valid
t_WLEL
t_WS Write Enable Low to Chip Enable Low
t_ELEH
t_CP Chip Enable Low to Chip Enable High
t_DVEH
t_DS Input Valid to Chip Enable High
t_EHDX
t_DH Chip Enable High to Input Transition
t_EHWH t_WH Chip Enable High to Write Enable High
t_EHEL t_CPH Chip Enable High to Chip Enable Low
t_AVEL
t_AS Address Valid to Chip Enable Low
t_ELAX
t_AH Chip Enable Low to Address Transition
t_GHEL
Output Enable High Chip Enable Low
t_EHGL t_OEH Chip Enable High to Output Enable Low
t_EHRL ^{(1) t}BUSY Program/Erase Valid to RB Low
t_VCHWL t_VCS V_CC High to Write Enable Low
Note: 1. This timing concerns the M29W461DU only.
70
Min
70
Min
0
Min
45
Min
45
Min
0
Min
0
Min
30
Min
0
Min
45
Min
0
Min
0
Max 90
Min
50
AI06801b
M29W641D
90
100
90
100
0
0
45
45
45
45
0
0
0
0
30
30
0
0
45
45
0
0
0
0
90
90
50
50
Unit
120
120 ns
0
ns
50
ns
50
ns
0
ns
0
ns
30
ns
0
ns
50
ns
0
ns
0
ns
90
ns
50
µs
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