ic41c1625 Integrated Silicon Solution, Inc., ic41c1625 Datasheet - Page 9

• Manufacturer Part Number: ic41c1625
• Description: 256k 4-mbit Dynamic With Fast Page Mode
• Manufacturer: Integrated Silicon Solution, Inc.

AC CHARACTERISTICS
AC TEST CONDITIONS
Output load:
Input timing reference levels: V
Output timing reference levels: V
Integrated Circuit Solution Inc.
DR021-0A 08/11/2001
(Recommended Operating Conditions unless otherwise noted.)
IC41C16257/IC41C16257S
IC41LV16257/IC41LV16257S
Symbol Parameter
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
ACH
OEH
DS
DH
RWC
RWD
CWD
AWD
PC
RASP
CPA
PRWC
OFF
CLCH
CSR
CHR
ORD
REF
T
Column-Address Setup Time to CAS
Precharge during WRITE Cycle
OE Hold Time from WE during
READ-MODIFY-WRITE cycle
Data-In Setup Time
Data-In Hold Time
READ-MODIFY-WRITE Cycle Time
RAS to WE Delay Time during
READ-MODIFY-WRITE Cycle
CAS to WE Delay Time
Column-Address to WE Delay Time
Fast Page Mode READ or WRITE
Cycle Time
Fast Page Mode RAS Pulse Width
Access Time from CAS Precharge
Fast Page Mode READ-WRITE Cycle Time
Output Buffer Turn-Off Delay from
CAS or RAS
Last CAS going LOW to First CAS
returning HIGH
CAS Setup Time (CBR REFRESH)
CAS Hold Time (CBR REFRESH)
OE Setup Time prior to RAS during
HIDDEN REFRESH Cycle
Refresh Period (512 Cycles)
Transition Time (Rise or Fall)
(24)
Two TTL Loads and 50 pF (Vcc = 5.0V ±10%)
One TTL Load and 50 pF (Vcc = 3.3V ±10%)
(13,15,19, 29)
(23)
(15, 22)
(15, 22)
(14, 20)
(1,2,3,4,5,6)
IH
(2, 3)
(18)
OH
(14)
V
= 2.4V, V
IH
= 2.0V, V
(30, 21)
(15)
(30, 20)
= 2.0V, V
(14)
IL
(24)
OL
= 0.8V (Vcc = 5.0V ±10%);
Min. Max.
IL
—
—
15
80
45
25
30
12
35 100K
40
10
8
0
6
3
8
8
0
1
= 0.8V (Vcc = 5V ±10%, 3.3V ±10%)
= 0.8V (Vcc = 3.3V ±10%)
-35
—
—
—
—
—
—
—
—
—
—
—
—
—
—
21
15
50
8
Min. Max.
125
—
—
15
10
70
34
42
20
50 100K
47
10
10
10
0
8
3
0
1
-50
27
—
—
—
—
—
—
—
—
—
—
15
—
—
—
—
50
8
Min. Max.
140
—
—
15
15
10
80
36
49
25
60 100K
56
10
10
10
0
3
0
1
-60
—
—
—
—
—
—
—
—
—
34
—
15
—
—
—
—
50
8
Units
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
9