
Preliminary
16
64Mb SDRAM
Ascend Semiconductor Corporation
Recommended DC Operating Conditions
( VDD = 3.3V +/- 0.3 V, All Operating Range)
Note :
1. ICC1 depends on output loading and cycle rates.
Specified values are obtained with the output open.
Input signals are changed only one time during tCK(min)
2. ICC4 depends on output loading and cycle rates.
Specified values are obtained with the output open.
Input signals are changed only one time during tCK(min)
3. Input signals are changed only one time during tCK(min)
4. Standard power version.
5. Low power version.
Operating current
Parameter
Test condition
Burst length = 1,
t
RC
≥
t
RC
(min), IOL = 0 mA,
One bank active
Symbol
I
CC1
CL=1
Precharge standby
current in power down
mode
Precharge standby
current in non-power
down mode
Active standby current
in non-power down
mode
(4 bank activated)
Active standby current
in power down mode
CKE
≥
V
IH
(min), t
CK
= 15ns,
/ CS
≥
V
IH
(min) Input signals are
changed one time during 30ns
CKE
≥
V
IH
(min), t
CK
=
∞
Input signals are stable
I
CC3N
I
CC3NS
CKE
≤
V
IL
(max.), t
Ck
=
∞
CKE
≤
V
IL
(max.), t
Ck
= 15 ns
I
CC2P
I
CC2PS
CKE
≥
V
IH
(min.), t
CK
= 15 ns,
/CS
≥
V
IH
(min.)Input signals are changed
one time during 30ns
CKE
≥
V
IH
(min.), t
CK
=
∞
Input signals are stable
I
CC2N
I
CC2NS
CKE
≤
V
IL
(max), t
CK
= 15ns
CKE
≤
V
IL
(max), t
CK
=
∞
I
CC3P
I
CC3PS
Standard
Low power
Standard
Low power
uA
uA
uA
uA
Units
mA
Notes
1
mA
mA
mA
mA
mA
2
mA
mA
mA
mA
uA
3
4
5
1000
500
1000
500
50
40
35
25
8
8
Operating current
(Burst mode)
t
CCD
= 2CLKs , I
OL
= 0 mA
I
CC4
CL=1
Self Refresh current
CKE
≤
0.2V
I
CC6
Standard
Low power
1
500
MAX
-5.5
-6
-7
-8
-10 -15
CL=2
CL=3
--
--
--
--
--
--
--
--
95
95
75
--
--
100
135 120 110 100
CL=2
CL=3
--
--
--
--
--
--
--
--
80
--
--
85
110 100
150 140 130 120 110
160 150 145 140 130
Refresh current
t
RC
≥
t
RC
(min.)
I
CC5