M29W400DT ST Microelectronics, M29W400DT Datasheet - Page 23

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

Figure 14. Write AC Waveforms, Chip Enable Controlled
Table 14. Write AC Characteristics, Chip Enable Controlled
Note: 1. Sampled only, not 100% tested.
Symbol
t
t
EHRL
t
VCHWL
t
t
t
t
t
t
t
t
t
t
EHWH
WLEL
DVEH
EHDX
GHEL
EHGL
ELEH
EHEL
ELAX
AVAV
AVEL
A0-A17/
A–1
W
G
E
DQ0-DQ7/
DQ8-DQ15
V CC
RB
(1)
t
t
t
t
BUSY
t
t
t
OEH
Alt
t
t
t
CPH
t
t
VCS
WC
WS
WH
DH
CP
DS
AS
AH
Address Valid to Next Address Valid
Write Enable Low to Chip Enable Low
Chip Enable Low to Chip Enable High
Input Valid to Chip Enable High
Chip Enable High to Input Transition
Chip Enable High to Write Enable High
Chip Enable High to Chip Enable Low
Address Valid to Chip Enable Low
Chip Enable Low to Address Transition
Output Enable High Chip Enable Low
Chip Enable High to Output Enable Low
Program/Erase Valid to RB Low
V
tVCHWL
CC
High to Write Enable Low
tWLEL
tGHEL
tAVEL
Parameter
tAVAV
VALID
tELEH
tDVEH
tEHRL
VALID
tELAX
Max
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
M29W400DT, M29W400DB
tEHWH
tEHGL
tEHEL
45
45
40
25
30
40
30
50
tEHDX
0
0
0
0
0
0
M29W400D
55
55
45
30
30
45
30
50
0
0
0
0
0
0
AI01870C
70
70
45
30
35
50
45
45
0
0
0
0
0
0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
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