KM62V256C, KM62U256C Family
Document Title
32Kx8 bit Low Power and Low Voltage CMOS Static RAM
CMOS SRAM
Revision History
Revision No. History
0.0
0.1
1.0
2.0
3.0
Design target
Initial draft
Finalize
Revised
Revised
- One datasheet for commercial, extended, industrial product.
- Increased KM62V256C Family′s I
CC2
30 to 35mA.
- Increased tDW 50 to 60ns for KM62U256C Family.
- Remove SOP package from KM62V256C Family.
Revised
- Change datasheets format.
- Improved power dissipation : 0.7W→1W
Draft Data
February 12, 1993
November 2, 1993
September 24, 1994
August 12, 1995
April 1, 1997
Remark
Advance
Preliminary
Final
Final
Final
4.0
February 12, 1998
Final
The attached datasheets are provided by SAMSUNG Electronics. SAMSUNG Electronics CO., LTD. reserve the right to change the specifications and
products. SAMSUNG Electronics will answer to your questions about device. If you have any questions, please contact the SAMSUNG branch offices.
1
Revision 4.0
February 1998
KM62V256C, KM62U256C Family
32Kx8 bit Low Power and Low Voltage CMOS Static RAM
FEATURES
•
Process Technology : Poly Load
•
Organization : 32Kx8
•
Power Supply Voltage
KM62V256C family : 2.7~3.3V
KM62U256C family : 3.0~3.6V
•
Low Data Retention Voltage : 2V(Min)
•
Three state output and TTL Compatible
•
Package Type : 28-SOP-450, 28-TSOP1-0813.4F/R
CMOS SRAM
GENERAL DESCRIPTION
The KM62V256C and KM62U256C families are fabricated
by SAMSUNG′s advanced CMOS process technology. The
families support various operating temperature ranges and
has various package types for user flexibility of system
design. The families also support low data retention voltage
for battery back-up operation with low data retention current.
PRODUCT FAMILY
Product Family
KM62V256CL-L
KM62U256CL-L
KM62V256CLE-L
KM62U256CLE-L
KM62V256CL-L
KM62U256CLI-L
Industrial(-40~85°C)
Extended(-25~85°C)
Operating
Temperature
Power Dissipation
V
CC
Range
3.0 ~ 3.6V
2.7 ~ 3.3V
3.0 ~ 3.6V
2.7 ~ 3.3V
3.0 ~ 3.6V
2.7 ~ 3.3V
Speed(ns)
Standby
(I
SB1
, Max)
10µA
10µA
20µA
15µA
20µA
15µA
35mA
28-SOP
2)
28-TSOP1-F/R
Operating
(I
CC2
, Max)
PKG Type
Commercial(0~70°C)
70
1)
/100
85
1)
/100
70
1)
/100
85
1)
/100
70
1)
/100
85
1)
/100
1. The parameter is measured with 30pF test load.
2. The device with 100ns SOP package in 3.0~3.6V V
CC
range which is not produced.
PIN DESCRIPTION
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O1
I/O2
I/O3
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
OE
A11
A9
VCC A8
A13
WE WE
A13 VCC
A14
A8 A12
A7
A9
A6
A5
A11
A4
OE A3
A10
A3
A4
A5
I/O8 A6
I/O7 A7
A12
I/O6 A14
VCC
I/O5 WE
A13
I/O4
A8
A9
A11
OE
CS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
14
13
12
11
10
9
8
7
6
5
4
3
2
1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A10
CS
I/O8
I/O7
I/O6
I/O5
I/O4
VSS
I/O3
I/O2
I/O1
A0
A1
A2
FUNCTIONAL BLOCK DIAGRAM
Clk gen.
Precharge circuit.
28-TSOP
Type1 - Forward
A3
A4
A5
A6
A7
A8
A12
A13
A14
Row
select
Memory array
512 rows
64×8 columns
28-SOP
21
20
19
18
17
16
15
28-TSOP
Type1 - Reverse
15
16
17
18
19
20
21
22
23
24
25
26
27
28
A2
A1
A0
I/O1
I/O2
I/O3
VSS
I/O4
I/O5
I/O6
I/O7
I/O8
CS
A10
I/O
1
I/O
8
Data
cont
I/O Circuit
Column select
Data
cont
Pin Name
CS
OE
WE
A
0
~A
14
I/O
1
~I/O
8
Vcc
Vss
Function
Chip Select Input
Output Enable Input
Write Enable Input
Address Inputs
Data Inputs/Outputs
Power
Ground
CS
WE
OE
A0
A1
A2
A9
A10
A11
Control
logic
SAMSUNG ELECTRONICS CO., LTD.
reserves the right to change products and specifications without notice.
2
Revision 4.0
February 1998
KM62V256C, KM62U256C Family
PRODUCT LIST
Commercial Temperature Products
(0~70°C)
Part Name
KM62V256CLG-7L
KM62V256CLG-10L
KM62V256CLTG-7L
KM62V256CLTG-10L
KM62V256CLRG-7L
KM62V256CLRG-10L
KM62U256CLG-8L
KM62U256CLG-10L
KM62U256CLTG-8L
KM62U256CLTG-10L
KM62U256CLRG-8L
KM62U256CLRG-10L
CMOS SRAM
Industrial Temperature Products
(-40~85°C)
Part Name
Function
Extended Temperature Products
(-25~85°C)
Part Name
KM62V256CLGE-7L
KM62V256CLGE-10L
KM62V256CLTGE-7L
KM62V256CLTGE-10L
KM62V256CLRGE-7L
KM62V256CLRGE-10L
KM62U256CLGE-8L
KM62U256CLGE-10L
KM62U256CLTGE-8L
KM62U256CLTGE-10L
KM62U256CLRGE-8L
KM62U256CLRGE-10L
Function
28-SOP, 70ns, 3.3V
28-SOP, 100ns, 3.3V
28-TSOP F, 70ns, 3.3V
28-TSOP F, 100ns, 3.3V
28-TSOP R, 70ns, 3.3V
28-TSOP R, 100ns, 3.3V
28-SOP, 85ns, 3.0V
28-SOP, 100ns, 3.0V
28-TSOP F, 85ns, 3.0V
28-TSOP F, 100ns, 3.0V
28-TSOP R, 85ns, 3.0V
28-TSOP R, 100ns, 3.0V
Function
28-SOP, 70ns, 3.3V
28-SOP, 100ns, 3.3V
28-TSOP F, 70ns, 3.3V
28-TSOP F, 100ns, 3.3V
28-TSOP R, 70ns, 3.3V
28-TSOP R, 100ns, 3.3V
28-SOP, 85ns, 3.0V
28-SOP, 100ns, 3.0V
28-TSOP F, 85ns, 3.0V
28-TSOP F, 100ns, 3.0V
28-TSOP R, 85ns, 3.0V
28-TSOP R, 100ns, 3.0V
KM62V256CLGI-7L
28-SOP, 70ns, 3.3V
KM62V256CLGI-10L
28-SOP, 100ns, 3.3V
KM62V256CLTGI-7L
28-TSOP F, 70ns, 3.3V
KM62V256CLTGI-10L 28-TSOP F, 100ns, 3.3V
KM62V256CLRGI-7L
28-TSOP R, 70ns, 3.3V
KM62V256CLRGI-10L 28-TSOP R, 100ns, 3.3V
KM62U256CLGI-8L
KM62U256CLGI-10L
KM62U256CLTGI-8L
KM62U256CLTGI-10L
KM62U256CLRGI-8L
KM62U256CLRGI-10L
28-SOP, 85ns, 3.0V
28-SOP, 100ns, 3.0V
28-TSOP F, 85ns, 3.0V
28-TSOP F, 100ns, 3.0V
28-TSOP R, 85ns, 3.0V
28-TSOP R, 100ns, 3.0V
FUNCTIONAL DESCRIPTION
CS
H
L
L
L
OE
X
1)
H
L
X
1)
WE
X
1)
H
H
L
I/O
High-Z
High-Z
Dout
Din
Mode
Deselected
Output Disabled
Read
Write
Power
Standby
Active
Active
Active
1. X means don′t care(Must be low or high state.)
ABSOLUTE MAXIMUM RATINGS
1)
Item
Voltage on any pin relative to Vss
Voltage on Vcc supply relative to Vss
Power Dissipation
Storage temperature
Operating Temperature
Symbol
V
IN
,V
OUT
V
CC
P
D
T
STG
T
A
Ratings
-0.5 to V
CC
+0.5
-0.3 to 4.6
1.0
-65 to 150
0 to 70
-25 to 85
-40 to 85
Soldering temperature and time
T
SOLDER
260°C, 10sec (Lead Only)
Unit
V
V
W
°C
°C
°C
°C
-
Remark
-
-
-
-
KM62V256CL-L, KM62U256CL-L
KM62V256CLE-L, KM62U256CLE-L
KM62V256CLI-L, KM62U256CLI-L
-
1. Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. Functional operation should be
restricted to recommended operating condition. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
3
Revision 4.0
February 1998
KM62V256C, KM62U256C Family
RECOMMENDED DC OPERATING CONDITIONS
1)
Item
Supply voltage
Ground
Input high voltage
Input low voltage
Symbol
Vcc
Vss
V
IH
V
IL
Product
KM62V256C Family
KM62U256C Family
All
KM62V256C, KM62U256C Family
KM62V256C, KM62U256C Family
Min
3.0
2.7
0
2.2
-0.3
3)
Typ
3.3
3.0
0
-
-
CMOS SRAM
Max
3.6
3.3
0
Vcc+0.3V
2)
0.4
Unit
V
V
V
V
Note:
1. Commercial Product : T
A
=0 to 70°C, otherwise specified
Extended Product : T
A
=-25 to 85°C, unless otherwise specified
Industrial Product : T
A
=-40 to 85°C, otherwise specified
2. Overshoot : V
CC
+3.0V in case of pulse width
≤
30ns
3. Undershoot : -3.0V in case of pulse width
≤
30ns
4. Overshoot and undershoot are sampled, not 100% tested.
CAPACITANCE
1)
(f=1MHz, T
A
=25°C)
Item
Input capacitance
Input/Output capacitance
1. Capacitance is sampled, not 100% tested
Symbol
C
IN
C
IO
Test Condition
V
IN
=0V
V
IO
=0V
Min
-
-
Max
6
8
Unit
pF
pF
DC AND OPERATING CHARACTERISTICS
Item
Input leakage current
Output leakage current
Operating power supply
Average operating current
Output low voltage
Output high voltage
Standby Current(TTL)
Symbol
I
LI
I
LO
I
CC
I
CC1
I
CC2
V
OL
V
OH
I
SB
V
IN
=Vss to Vcc
CS=V
IH
or OE=V
IH
or WE=V
IL
, V
IO
=V
SS
to Vcc
I
IO
=0mA, CS=V
IL,
V
IN
=V
IH
or V
IL
Cycle time=1µs, 100% duty, I
IO
=0mA, CS≤0.2V, V
IN
≤0.2V,
V
IN
≥Vcc
-0.2V
Test Conditions
Min
-1
-1
-
-
-
-
2.2
-
KM62V256CL-L
KM62V256CLE-L
KM62V256CLI-L
KM62U256CL-L
KM62U256CLE-L
KM62U256CLI-L
-
-
-
-
-
-
Typ
-
-
1.0
2.5
20
-
-
-
1.5
1.5
1.5
1.0
1.0
1.0
Max
1
1
2.0
5
35
0.4
-
0.3
10
20
20
10
15
15
Unit
µA
µA
mA
mA
mA
V
V
mA
µA
Cycle time=Min,100% duty, I
IO
=0mA, CS=V
IL,
V
IN
=V
IH
or V
IL
I
OL
=2.1mA
I
OH
=-1.0mA
CS=V
IH
, Other inputs=V
IH
or V
IL
Standby Current(CMOS)
I
SB1
CS≥Vcc-0.2V, Other inputs=0~Vcc
µA
4
Revision 4.0
February 1998
KM62V256C, KM62U256C Family
AC OPERATING CONDITIONS
TEST CONDITIONS
( Test Load and Input/Output Reference)
Input pulse level : 0.4 to 2.2V
Input rising and falling time : 5ns
Input and output reference voltage :1.5V
Output load(see right) : C
L
=100pF+1TTL
1)
C
L
=30pF+1TTL
1. KM62V256CL-7L Family, KM62U256CL-8L Family
CMOS SRAM
C
L
1)
1. Including scope and jig capacitance
AC CHARACTERISTICS
(KM62V256C Family : Vcc=3.0~3.6V, KM62U256C Family : Vcc=2.7~3.3V
Commercial product :T
A
=0 to 70°C, Extended product :T
A
=-25 to 85°C, Industrial product : T
A
=-40 to 85°C)
Speed Bins
Parameter List
Symbol
Min
Read cycle time
Address access time
Chip select to output
Output enable to valid output
Read
Chip select to low-Z output
Output enable to low-Z output
Chip disable to high-Z output
Output disable to high-Z output
Output hold from address change
Write cycle time
Chip select to end of write
Address set-up time
Address valid to end of write
Write
Write pulse width
Write recovery time
Write to output high-Z
Data to write time overlap
Data hold from write time
End write to output low-Z
t
RC
t
AA
t
CO
t
OE
t
LZ
t
OLZ
t
HZ
t
OHZ
t
OH
t
WC
t
CW
t
AS
t
AW
t
WP
t
WR
t
WHZ
t
DW
t
DH
t
OW
70
-
-
-
10
5
0
0
5
70
60
0
60
50
0
0
50
0
5
70ns
Max
-
70
70
35
-
-
30
30
-
-
-
-
-
-
-
25
-
-
-
Min
85
-
-
-
10
5
0
0
10
85
70
0
70
60
0
0
60
0
10
85ns
Max
-
85
85
40
-
-
30
30
-
-
-
-
-
-
-
25
-
-
-
Min
100
-
-
-
10
5
0
0
15
100
70
0
70
60
0
0
60
0
10
100ns
Max
-
100
100
50
-
-
35
35
-
-
-
-
-
-
-
30
-
-
-
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Units
DATA RETENTION CHARACTERISTICS
Item
Vcc for data retention
V
DR
KM62V256CL-L
KM62U256CL-L
Data retention current
I
DR
KM62V256CLE-L
KM62U256CLE-L
KM62V256CLI-L
KM62U256CLI-L
Data retention set-up time
Recovery time
t
SDR
t
RDR
See data retention waveform
Vcc=3.0V
CS≥Vcc-0.2V
Symbol
Test Condition
CS≥Vcc-0.2V
Min
2.0
-
-
-
-
-
-
0
5
Typ
-
1
0.6
1
0.6
1
0.6
-
-
Max
3.6
8
8
10
10
10
10
-
-
ms
µA
Unit
V
5
Revision 4.0
February 1998