AS4C256K16E0-30 ALSC [Alliance Semiconductor Corporation], AS4C256K16E0-30 Datasheet - Page 21

• Manufacturer Part Number: AS4C256K16E0-30
• Description: 5V 256Kx16 CMOS DRAM (EDO)
• Manufacturer: ALSC [Alliance Semiconductor Corporation]

CAS-before-RAS self refresh cycle
Typical DC and AC characteristics
4/11/01; v.1.1
UCAS,
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
70
60
50
40
30
20
10
0.0
LCAS
RAS
4.0
4.0
DQ
Normalized access time t
Typical supply current I
vs. supply voltage V
T
vs. supply voltage V
a
4.5
Supply voltage (V)
4.5
Supply voltage (V)
= 25°C
5.0
5.0
5.5
5.5
CC
CC
t
RPC
RAC
t
CC
CP
t
RP
6.0
6.0
t
CEZ
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
70
60
50
40
30
20
10
0.0
Alliance Semiconductor
t
–55
–55
CSR
Normalized access time t
vs. ambient temperature T
vs. ambient temperature T
Typical supply current I
Ambient temperature (°C)
Ambient temperature (°C)
–10
–10
35
35
®
t
RASS
80
80
RAC
CC
a
a
125
125
100
0.0
90
80
70
60
50
40
30
35
30
25
20
15
10
5
t
CHS
50
2
Typical power-on current I
Typical access time t
vs. load capacitance C
Load capacitance (pF)
vs. cycle rate 1/t
100
4
Cycle rate (MHz)
t
t
RPS
RPC
AS4C256K16E0
150
6
RC
200
8
RAC
21 of 24
L
PO
250
10