K4F660411B,K4F640411B
CMOS DRAM
16M x 4bit CMOS Dynamic RAM with Fast Page Mode
DESCRIPTION
This is a family of 16,777,216 x 4 bit Fast Page Mode CMOS DRAMs. Fast Page Mode offers high speed random access of memory
cells within the same row. Refresh cycle(4K Ref. or 8K Ref.), access time(-45, -50 or -60), package type(SOJ or TSOP-II) are optional
features of this family. All of this family have CAS-before-RAS refresh, RAS-only refresh and Hidden refresh capabilities. This 16Mx4
Fast Page Mode DRAM family is fabricated using Samsung′s advanced CMOS process to realize high band-width, low power consump-
tion and high reliability.
FEATURES
• Part Identification
- K4F660411B-JC(5.0V, 8K Ref., SOJ )
- K4F640411B-JC(5.0V, 4K Ref. SOJ)
- K4F660411B-TC(5.0V, 8K Ref., TSOP)
- K4F640411B-TC(5.0V, 4K Ref., TSOP)
• Fast Page Mode operation
• CAS-before-RAS refresh capability
• RAS-only and Hidden refresh capability
• Fast parallel test mode capability
• TTL(5.0V) compatible inputs and outputs
• Early Write or output enable controlled write
•
Active Power Dissipation
Unit : mW
Speed
-45
-50
-60
•
Refresh Cycles
Part
NO.
K4F660411B*
K4F640411B
Refresh
cycle
8K
4K
Refresh time
Normal
64ms
RAS
CAS
W
Control
Clocks
Vcc
Vss
• JEDEC Standard pinout
• Available in Plastic SOJ and TSOP(II) packages
• +5.0V±10% power supply
4K
715
660
605
8K
550
495
440
FUNCTIONAL BLOCK DIAGRAM
VBB Generator
Refresh Control
Refresh Counter
Memory Array
16,777,216 x 4
Cells
Sense Amps & I/O
* Access mode & RAS only refresh mode
: 8K cycle/64ms
CAS-before-RAS & Hidden refresh mode
: 4K cycle/64ms
•
Performance Range
Speed
-45
-50
-60
Refresh Timer
Row Decoder
Data in
Buffer
DQ0
to
DQ3
Data out
Buffer
OE
t
RAC
45ns
50ns
60ns
t
CAC
12ns
13ns
15ns
t
RC
80ns
90ns
110ns
t
PC
31ns
35ns
40ns
A0~A12
(A0~A11)*1
A0~A10
(A0~A11)*1
Row Address Buffer
Col. Address Buffer
Column Decoder
Note) *1 : 4K Refresh
SAMSUNG ELECTRONICS CO., LTD.
reserves the right to
change products and specifications without notice.
K4F660411B,K4F640411B
CMOS DRAM
PIN CONFIGURATION
(Top Views)
•
K4F660411B-J
•
K4F640411B-J
V
CC
DQ0
DQ1
N.C
N.C
N.C
N.C
W
RAS
A0
A1
A2
A3
A4
A5
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
V
SS
DQ3
DQ2
N.C
N.C
N.C
CAS
OE
A12(N.C)*
A11
A10
A9
A8
A7
A6
V
SS
V
CC
DQ0
DQ1
N.C
N.C
N.C
N.C
W
RAS
A0
A1
A2
A3
A4
A5
V
CC
•
K4F660411B-T
•
K4F640411B-T
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
V
SS
DQ3
DQ2
N.C
N.C
N.C
CAS
OE
A12(N.C)*
A11
A10
A9
A8
A7
A6
V
SS
(J : 400mil SOJ)
(T : 400mil TSOP(II))
* (N.C) : N.C for 4K Refresh product
Pin Name
A0 - A12
A0 - A11
DQ0 - 3
V
SS
RAS
CAS
W
OE
V
CC
N.C
Pin Function
Address Inputs(8K Product)
Address Inputs(4K Product)
Data In/Out
Ground
Row Address Strobe
Column Address Strobe
Read/Write Input
Data Output Enable
Power(+5.0V)
No Connection
K4F660411B,K4F640411B
ABSOLUTE MAXIMUM RATINGS
Parameter
Voltage on any pin relative to V
SS
Voltage on V
CC
supply relative to V
SS
Storage Temperature
Power Dissipation
Short Circuit Output Current
Symbol
V
IN,
V
OUT
V
CC
Tstg
P
D
I
OS
Address
Rating
-1.0 to +7.0
-1.0 to +7.0
-55 to +150
1
50
CMOS DRAM
Units
V
V
°C
W
mA
* Permanent device damage may occur if "ABSOLUTE MAXIMUM RATINGS" are exceeded. Functional operation should be restricted to
the conditions as detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended
periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
(Voltage referenced to Vss, T
A
= 0 to 70°C)
Parameter
Supply Voltage
Ground
Input High Voltage
Input Low Voltage
Symbol
V
CC
V
SS
V
IH
V
IL
Min
4.5
0
2.4
-1.0
*2
Typ
5.0
0
-
-
Max
5.5
0
V
CC
+1.0
*1
0.8
Units
V
V
V
V
*1 : V
CC
+2.0V at pulse width≤20ns which is measured at V
CC
*2 : -2.0 at pulse width≤20ns which is measured at V
SS
DC AND OPERATING CHARACTERISTICS
(Recommended operating conditions unless otherwise noted.)
Parameter
Input Leakage Current (Any input 0≤V
IN
≤V
CC
+0.5V,
all other pins not under test=0 Volt)
Output Leakage Current
(Data out is disabled, 0V≤V
OUT
≤V
CC
)
Output High Voltage Level(I
OH
=-5mA)
Output Low Voltage Level(I
OL
=4.2mA)
Symbol
I
I(L)
I
O(L)
V
OH
V
OL
Min
-5
-5
2.4
-
Max
5
5
-
0.4
Units
uA
uA
V
V
K4F660411B,K4F640411B
DC AND OPERATING CHARACTERISTICS
(Continued)
Symbol
Power
Speed
K4F660411B
I
CC1
Don′t care
-45
-50
-60
Don′t Care
-45
-50
-60
-45
-50
-60
Don′t Care
-45
-50
-60
100
90
80
2
100
90
80
70
60
50
1
100
90
80
Max
K4F640411B
130
120
110
2
130
120
110
80
70
60
1
130
120
110
CMOS DRAM
Units
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
I
CC2
Normal
I
CC3
Don′t care
I
CC4
Don′t care
I
CC5
Normal
I
CC6
Don′t care
I
CC1
* : Operating Current (RAS and CAS, Address cycling @
t
RC
=min.)
I
CC2
: Standby Current (RAS=CAS=W=V
IH
)
I
CC3
* : RAS-only Refresh Current (CAS=V
IH
, RAS, Address cycling @
t
RC
=min.)
I
CC4
* : Fast Page Mode Current (RAS=V
IL
, CAS, Address cycling @
t
PC
=min.)
I
CC5
: Standby Current (RAS=CAS=W=V
CC
-0.2V)
I
CC6
* : CAS-Before-RAS Refresh Current (RAS and CAS cycling @
t
RC
=min)
*Note :
I
CC1
, I
CC3
, I
CC4
and I
CC6
are dependent on output loading and cycle rates. Specified values are obtained with the output open.
I
CC
is specified as an average current. In I
CC1
, I
CC3
and I
CC6,
address can be changed maximum once while RAS=V
IL
. In I
CC4
,
address can be changed maximum once within one fast page mode cycle time,
t
PC
.
K4F660411B,K4F640411B
CAPACITANCE
(T
A
=25°C, V
CC
=5.0V, f=1MHz)
Parameter
Input capacitance [A0 ~ A12]
Input capacitance [RAS, CAS, W, OE]
Output capacitance [DQ0 - DQ3]
Symbol
C
IN1
C
IN2
C
DQ
Min
-
-
-
CMOS DRAM
Max
5
7
7
Units
pF
pF
pF
AC CHARACTERISTICS
(0°C≤T
A
≤70°C,
See note 1,2)
Test condition : V
CC
=5.0V±10%, Vih/Vil=2.4/0.8V, Voh/Vol=2.4/0.4V
Parameter
Random read or write cycle time
Read-modify-write cycle time
Access time from RAS
Access time from CAS
Access time from column address
CAS to output in Low-Z
Output buffer turn-off delay
Transition time (rise and fall)
RAS precharge time
RAS pulse width
RAS hold time
CAS hold time
CAS pulse width
RAS to CAS delay time
RAS to column address delay time
CAS to RAS precharge time
Row address set-up time
Row address hold time
Column address set-up time
Column address hold time
Column address to RAS lead time
Read command set-up time
Read command hold time referenced to CAS
Read command hold time referenced to RAS
Write command hold time
Write command pulse width
Write command to RAS lead time
Write command to CAS lead time
Data set-up time
Data hold time
Symbol
Min
-45
Max
Min
90
133
45
12
23
0
0
1
25
45
12
45
12
18
13
5
0
8
0
8
23
0
0
0
8
8
13
12
0
10
10K
33
22
10K
13
50
0
0
1
30
50
13
50
13
20
15
5
0
10
0
10
25
0
0
0
10
10
15
13
0
10
10K
37
25
10K
13
50
50
13
25
0
0
1
40
60
15
60
15
20
15
5
0
10
0
10
30
0
0
0
10
10
15
15
0
10
10K
45
30
10K
13
50
-50
Max
Min
110
153
60
15
30
-60
Max
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
9
9
8
8
4
10
3,4,10
3,4,5
3,10
3
6
2
Units
Note
t
RC
t
RWC
t
RAC
t
CAC
t
AA
t
CLZ
t
OFF
t
T
t
RP
t
RAS
t
RSH
t
CSH
t
CAS
t
RCD
t
RAD
t
CRP
t
ASR
t
RAH
t
ASC
t
CAH
t
RAL
t
RCS
t
RCH
t
RRH
t
WCH
t
WP
t
RWL
t
CWL
t
DS
t
DH
80
115
Analog electronics
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