HM514170C, HM51S4170C Series
Read Cycle
HM514170C, HM51S4170C
-7
Parameter
Access time from
RAS
Access time from
CAS
Access time from address
Access time from
OE
Read command setup time
Read command hold time to
CAS
Read command hold time to
RAS
Column address to
RAS
lead time
Output buffer turn-off time
Output buffer turn-off to
OE
CAS
to Din delay time
Symbol Min
t
RAC
t
CAC
t
AA
t
OAC
t
RCS
t
RCH
t
RRH
t
RAL
t
OFF1
t
OFF2
t
CDD
—
—
—
—
0
0
0
35
0
0
15
Max
70
20
35
20
—
—
—
—
15
15
—
-8
Min
—
—
—
—
0
0
0
40
0
0
15
Max
80
20
40
20
—
—
—
—
15
15
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
6
6
Notes
2, 3
3, 4, 13
3, 5, 13
22
20
16, 19
16
Write Cycle
HM514170C, HM51S4170C
-7
Parameter
Write command setup time
Write command hold time
Write command pulse width
Write command to
RAS
lead time
Write command to
CAS
lead time
Data-in setup time
Data-in hold time
CAS
to
OE
delay time
Symbol Min
t
WCS
t
WCH
t
WP
t
RWL
t
CWL
t
DS
t
DH
t
COD
0
15
10
20
20
0
15
—
Max
—
—
—
—
—
—
—
0
-8
Min
0
15
10
20
20
0
15
—
Max
—
—
—
—
—
—
—
0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Notes
10, 19
20
21
21
21
11, 21
11, 21
22
9
HITACHI [ HITACHI SEMICONDUCTOR ]
