M29F400BT, M29F400BB
Table 15. Write AC Characteristics, Write Enable Controlled
(T = 0 to 70 °C, –40 to 85 °C or –40 to 125 °C)
A
M29F400B
Unit
Symbol
Alt
Parameter
45
45
0
55
55
0
70 / 90
t
t
WC
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
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Max
70
0
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
AVAV
t
t
CS
ELWL
t
t
40
25
0
40
25
0
45
30
0
WLWH
WP
t
t
DVWH
DS
DH
CH
t
t
t
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
WHDX
t
0
0
0
WHEH
t
t
WPH
20
0
20
0
20
0
WHWL
t
t
AS
AVWL
t
t
AH
40
0
40
0
45
0
WLAX
t
GHWL
t
t
OEH
0
0
0
WHGL
(1)
t
30
50
30
50
30
50
t
BUSY
WHRL
t
t
V
High to Chip Enable Low
CC
Min
µs
VCHEL
VCS
Note: 1. Sampled only, not 100% tested.
Figure 9. Write AC Waveforms, Write Enable Controlled
tAVAV
A0-A17/
VALID
A–1
tWLAX
tAVWL
tWHEH
E
tELWL
tWHGL
G
tGHWL
tWLWH
W
tWHWL
tWHDX
tDVWH
VALID
DQ0-DQ7/
DQ8-DQ15
V
CC
tVCHEL
RB
tWHRL
AI01869C
15/22
STMICROELECTRONICS [ ST ]
