Switching Characteristics
V = 5V ± 5% (+5 Volt Option), V = 3.3V ± 0.3V (+3.3 Volt Option), C = 50pf, T = 0 to 70°C (Commercial) ,T = -40 to 85°C (Industrial)
CC
CC
L
A
A
-12
-15
Symbol
Description
Units
Min
Max
12
8
Min
Max
15
8
(1)
AC
t
Column Address Access Time for Addresses A
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
0-8
(1)
t
Column Address Access Time for Addresses A and A
AC1
9
10
t
Column Address Valid to /CAL Inactive (Write Cycle)
12
5
15
5
ACH
AQX
AQX1
ASC
ASR
C
t
Column Address Change to Output Data Invalid for Addresses A
0-8
t
t
t
t
t
t
t
t
t
Column Address Change to Output Data Invalid for Addresses A and A
1
5
1
5
9
10
Column Address Setup Time
Row Address Setup Time
Row Enable Cycle Time
5
5
65
25
6
55
20
5
Row Enable Cycle Time, Cache Hit (Row=LRR), Read Cycle Only
Column Address Latch Active Time
C1
CAE
CAH
CH
Column Address Hold Time
0
0
5
5
Column Address Latch High Time (Latch Transparent)
/CAL Inactive Lead Time to /RE Inactive (Write Cycles Only)
-2
-2
CHR
t
t
t
0
0
Column Address Latch High to Write Enable Low (Multiple Writes)
Column Address Latch High to Data Valid
ns
ns
ns
CHW
CQV
CQX
15
17
Column Address Latch Inactive to Data Invalid for Addresses A
0-8
5
5
t
t
t
t
Column Address Latch Inactive to Data Invalid for Addresses A and A
1
5
5
0
1
5
5
0
ns
ns
ns
ns
CQX1
CRP
CWL
DH
9
10
Column Address Latch Setup Time to Row Enable
/WE Low to /CAL Inactive
Data Input Hold Time
t
t
5
5
Data Input Setup Time
ns
ns
DS
(1)
Output Enable Access Time
5
5
5
5
5
5
GQV
(2,3)
t
t
t
t
t
t
t
t
t
Output Enable to Output Drive Time
0
0
0
0
ns
ns
GQX
(4,5)
Output Turn-Off Delay From Output Disabled (/G↑)
/F and W/R Mode Select Hold Time
GQZ
0
0
ns
ns
ns
ns
ns
MH
/F and W/R Mode Select Setup Time
5
5
MSU
NRH
NRS
PC
/CAL, /G, /WE, and W/R Hold Time For /RE-Only Refresh
/CAL, /G, /WE, and W/R Setup Time For /RE-Only Refresh,
0
0
5
5
Column Address Latch Cycle Time
12
15
(1)
Row Enable Access Time, On a Cache Miss
Row Enable Access Time, On a Cache Hit (Limit Becomes t
30
15
35
17
ns
ns
RAC
(1)
)
RAC1
AC
(1,6)
t
t
t
30
35
ns
ns
ns
Row Enable Access Time for a Cache Write Hit
Row Address Hold Time
RAC2
RAH
RE
1
1.5
35
Row Enable Active Time
30
100000
100000
1-6
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
