M29F400BT, M29F400BB
Table 16. Write AC Characteristics, Chip Enable Controlled
(T = 0 to 70 °C, –40 to 85 °C or –40 to 125 °C)
A
M29F400B
Symbol
Alt
Parameter
Unit
45
45
0
55
55
0
70 / 90
t
t
WC
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
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
WS
WLEL
t
t
40
25
0
40
25
0
45
30
0
ELEH
CP
DS
t
t
t
DVEH
t
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
EHDX
DH
t
t
WH
0
0
0
EHWH
t
t
20
0
20
0
20
0
EHEL
CPH
t
t
AS
AVEL
t
t
AH
40
0
40
0
45
0
ELAX
t
GHEL
t
t
0
0
0
EHGL
OEH
(1)
t
30
50
30
50
30
50
t
BUSY
EHRL
t
t
V
High to Write Enable Low
CC
Min
µs
VCHWL
VCS
Note: 1. Sampled only, not 100% tested.
Figure 10. Write AC Waveforms, Chip Enable Controlled
tAVAV
A0-A17/
VALID
A–1
tELAX
tAVEL
tEHWH
W
tWLEL
tEHGL
G
tGHEL
tELEH
E
tEHEL
tEHDX
tDVEH
VALID
DQ0-DQ7/
DQ8-DQ15
V
CC
tVCHWL
RB
tEHRL
AI01870C
16/22
STMICROELECTRONICS [ ST ]
