DC and AC parameters
Figure 12. Write AC waveforms, Write Enable controlled
tAVAV
A0-A17/
A–1
VALID
tWLAX
tAVWL
E
tELWL
G
tGHWL
W
tWLWH
M29W400DT, M29W400DB
tWHEH
tWHGL
tWHWL
tDVWH
DQ0-DQ7/
DQ8-DQ15
VALID
tWHDX
VCC
tVCHEL
RB
tWHRL
AI01869C
Table 13.
Symbol
t
AVAV
t
ELWL
t
WLWH
t
DVWH
t
WHDX
t
WHEH
t
WHWL
t
AVWL
t
WLAX
t
GHWL
t
WHGL
t
WHRL(1)
t
VCHEL
Write AC characteristics, Write Enable controlled
M29W400D
Alt
t
WC
t
CS
t
WP
t
DS
t
DH
t
CH
t
WPH
t
AS
t
AH
Parameter
45
Address Valid to Next Address Valid
Chip Enable Low to Write Enable Low
Write Enable Low to Write Enable High
Input Valid to Write Enable High
Write Enable High to Input Transition
Write Enable High to Chip Enable High
Write Enable High to Write Enable Low
Address Valid to Write Enable Low
Write Enable Low to Address Transition
Output Enable High to Write Enable Low
t
OEH
t
BUSY
t
VCS
Write Enable High to Output Enable Low
Program/Erase Valid to RB Low
V
CC
High to Chip Enable Low
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Max
Min
45
0
30
25
0
0
30
0
40
0
0
30
50
55
55
0
30
30
0
0
30
0
45
0
0
30
50
70
70
0
30
45
0
0
30
0
45
0
0
35
50
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
Unit
1. Sampled only, not 100% tested.
32/48
NUMONYX [ NUMONYX B.V ]
