AS29F400
Preliminary information
®
AC parameters—write cycle 2
CE controlled
-55
-70
-90
-120
-120
JEDEC
Symbol
Std Symbol Parameter
Min Max Min Max Min Max Min Max Min Max Unit
t
t
t
t
t
t
t
t
t
t
t
Write cycle time
55
0
-
-
-
-
-
-
-
70
0
-
-
-
-
-
-
-
90
0
-
-
-
-
-
-
-
120
0
-
-
-
-
-
-
-
150
0
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
ns
AVAV
AVEL
ELAX
DVEH
EHDX
WC
AS
Address setup time
Address hold time
40
25
0
45
30
0
45
45
0
50
50
0
50
50
0
AH
DS
Data setup time
Data hold time
DH
OES
Output enable setup time
Output enable hold time: Read
0
0
0
0
0
0
0
0
0
0
t
Output enable hold time:
Toggle and data polling
OEH
10
-
10
-
10
-
10
-
10
-
ns
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Read recover time before write
WE setup time
0
0
-
-
-
-
-
-
-
0
0
-
-
-
-
-
-
-
0
0
-
-
-
-
-
-
-
0
0
-
-
-
-
-
-
-
0
0
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
µs
sec
GHEL
GHEL
WS
WLEL
WE hold time
0
0
0
0
0
EHWH
ELEH
WH
CE pulse width
35
20
15
0.3
35
20
15
0.3
45
20
15
0.3
50
20
15
0.3
55
20
15
0.3
CP
CE pulse width high
Programming time
Erase time
EHEL
CPH
WHWH1
WHWH2
WHWH1
WHWH2
Write waveform 2
CE controlled
DATA polling
Addresses
WE
5555h
Program address
Program address
t
AH
t
t
AS
WC
t
, t
GHEL OES
OE
t
CP
t
WHWH1 or 2
CE
t
CPH
t
DH
Program
data
Data
A0h
DQ7
DOUT
t
DS
14
ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
