¡ Semiconductor
AC Characteristics (3/3)
Parameter
DT
to
RAS
Precharge Time
DT
Precharge Time
RAS
to First SC Delay Time (Read Transfer)
Column Address to First SC Delay Time (Read Transfer)
CAS
to First SC Delay Time (Read Transfer)
Last SC to
DT
Lead Time (Real Time Read Transfer)
DT
to First SC Delay Time (Read Transfer)
Last SC to
RAS
Set-up Time (Serial Input)
RAS
to First SC Delay Time (Serial Input)
RAS
to Serial Input Delay Time
Serial Output Buffer Turn-off Delay from
RAS
(Pseudo Write Transfer)
SC Cycle Time
SC Pulse Width (SC High Time)
SC Precharge Time (SC Low Time)
Access Time from SC
Serial Output Hold Time from SC
Serial Input Set-up Time
Serial Input Hold Time
Access Time from
SE
SE
Pulse Width
SE
Precharge Time
Serial Output Buffer Turn-off Delay from
SE
Serial Input to
SE
Delay Time
Serial Input to First SC Delay Time
Serial Write Enable Set-up Time
Serial Write Enable Hold Time
Serial Write Disable Set-up Time
Serial Write Disable Hold Time
Split Transfer Set-up Time
Split Transfer Hold Time
SC-QSF Delay Time
DT-QSF
Delay Time
CAS-QSF
Delay Time
RAS-QSF
Delay Time
Symbol
t
TRP
t
TP
t
RSD
t
ASD
t
CSD
t
TSL
t
TSD
t
SRS
t
SRD
t
SDD
t
SDZ
t
SCC
t
SC
t
SCP
t
SCA
t
SOH
t
SDS
t
SDH
t
SEA
t
SE
t
SEP
t
SEZ
t
SZE
t
SZS
t
SWS
t
SWH
t
SWIS
t
SWIH
t
STS
t
STH
t
SQD
t
TQD
t
CQD
t
RQD
MSM514262
(V
CC
= 5 V ±10%, Ta = 0°C to 70°C) Note 4, 5, 6
-70
60
20
70
45
20
5
15
25
20
40
10
30
10
10
—
5
0
15
—
25
25
0
0
0
5
15
5
15
25
25
—
—
—
—
—
—
—
—
—
—
—
—
—
—
40
—
—
—
25
—
—
—
25
—
—
20
—
—
—
—
—
—
—
—
25
25
35
75
60
20
80
45
25
5
15
25
20
40
10
30
10
10
—
5
0
15
—
25
25
0
0
0
5
15
5
15
30
30
—
—
—
—
-80
—
—
—
—
—
—
—
—
—
—
40
—
—
—
25
—
—
—
25
—
—
20
—
—
—
—
—
—
—
—
25
25
35
75
70
30
100
50
25
5
15
30
25
50
10
30
10
10
—
5
0
15
—
25
25
0
0
0
5
15
5
15
30
30
—
—
—
—
-10
—
—
—
—
—
—
—
—
—
—
50
—
—
—
25
—
—
—
25
—
—
20
—
—
—
—
—
—
—
—
25
25
35
85
Min. Max. Min. Max. Min. Max.
Unit Note
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
9
8
8
9
8/45
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