M29W400DT ST Microelectronics, M29W400DT Datasheet - Page 22

• Manufacturer Part Number: M29W400DT
• Description: 4 Mbit (512Kb x8 or 256Kb x16 / Boot Block) 3V Supply Flash Memory
• Manufacturer: ST Microelectronics

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