®
LY61L25616
Rev. 2.3
256K X 16 BIT HIGH SPEED CMOS SRAM
REVISION HISTORY
Revision
Rev. 1.0
Rev. 1.1
Rev. 1.2
Rev. 2.0
Description
Initial Issue
Added Extended Grade
Added PKG Type : 48-ball 6mm x 8mm TFBGA
Revised I
CC
and I
SB1
Added I grade
Revised V
TERM
to V
T1
and V
T2
Revised
FEATURES
&
ORDERING INFORMATION
Lead free and green package available
to
Green package
available
Deleted T
SOLDER
in
ABSOLUTE MAXIMUN RATINGS
Added packing type in
ORDERING INFORMATION
Revised
PACKAGE OUTLINE DIMENSION
in page 11
Revised
ORDERING INFORMATION
in page 12
Issue Date
May.24.2006
Jan.22.2007
Jan.30.2007
Jun.23.2007
Rev.2.1
Apr.17.2009
Rev. 2.2
Rev. 2.3
May.6.2010
Aug.25.2010
Lyontek Inc.
reserves the rights to change the specifications and products without notice.
5F, No. 2, Industry E. Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan.
TEL: 886-3-6668838
FAX: 886-3-6668836
0
®
LY61L25616
Rev. 2.3
256K X 16 BIT HIGH SPEED CMOS SRAM
GENERAL DESCRIPTION
The LY61L25616 is a 4,194,304-bit low power
CMOS static random access memory organized as
262,144 words by 16 bits. It is fabricated using very
high performance, high reliability CMOS technology.
Its standby current is stable within the range of
operating temperature.
The LY61L25616 is well designed for low power
application, and particularly well suited for battery
back-up nonvolatile memory application.
The LY61L25616 operates from a single power
supply of 3.3V and all inputs and outputs are fully
TTL compatible
FEATURES
Fast access time : 10/12/15/20/25ns
Very low power consumption:
Operating current:
180/160/140/80/70mA(MAX.)
Standby current:
12mA(MAX. for 10/12/15ns)
5mA(MAX. for 20/25ns)
100µA( (MAX. for 20/25ns LL version)
Single 3.3V power supply
All inputs and outputs TTL compatible
Fully static operation
Tri-state output
Data byte control : LB# (DQ0 ~ DQ7)
UB# (DQ8 ~ DQ15)
Data retention voltage : 2.0V (MIN.)
Green package available
Package : 44-pin 400 mil TSOP-II
48-ball 6mm x 8mm TFBGA
PRODUCT FAMILY
Product
Family
LY61L25616
LY61L25616(E)
LY61L25616(I)
LY61L25616
LY61L25616(E)
LY61L25616(I)
LY61L25616(LL)
LY61L25616(LLE)
LY61L25616(LLI)
Operating
Temperature
0 ~ 70℃
-20 ~ 80℃
-40 ~ 85℃
0 ~ 70℃
-20 ~ 80℃
-40 ~ 85℃
0 ~ 70℃
-20 ~ 80℃
-40 ~ 85℃
Vcc Range
3.15/3.0 ~ 3.6V
3.15/3.0 ~ 3.6V
3.15/3.0 ~ 3.6V
3.0 ~ 3.6V
3.0 ~ 3.6V
3.0 ~ 3.6V
3.0 ~ 3.6V
3.0 ~ 3.6V
3.0 ~ 3.6V
Speed
10/12/15ns
10/12/15ns
10/12/15ns
20/25ns
20/25ns
20/25ns
20/25ns
20/25ns
20/25ns
Power Dissipation
Standby(I
SB1,
MAX.) Operating(Icc,MAX.)
12mA
180/160/140mA
12mA
180/160/140mA
12mA
180/160/140mA
5mA
80/70mA
5mA
80/70mA
5mA
80/70mA
100µA
80/70mA
100µA
80/70mA
100µA
80/70mA
Lyontek Inc.
reserves the rights to change the specifications and products without notice.
5F, No. 2, Industry E. Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan.
TEL: 886-3-6668838
FAX: 886-3-6668836
1
®
LY61L25616
Rev. 2.3
256K X 16 BIT HIGH SPEED CMOS SRAM
PIN DESCRIPTION
SYMBOL
DESCRIPTION
Address Inputs
Chip Enable Input
Write Enable Input
Output Enable Input
Lower Byte Control
Upper Byte Control
Power Supply
Ground
FUNCTIONAL BLOCK DIAGRAM
Vcc
Vss
A0 - A17
CE#
WE#
OE#
LB#
UB#
V
CC
DQ0 – DQ15 Data Inputs/Outputs
DECODER
256Kx16
MEMORY ARRAY
A0-A17
DQ0-DQ7
Lower Byte
DQ8-DQ15
Upper Byte
V
SS
I/O DATA
CIRCUIT
COLUMN I/O
CE#
WE#
OE#
LB#
UB#
CONTROL
CIRCUIT
Lyontek Inc.
reserves the rights to change the specifications and products without notice.
5F, No. 2, Industry E. Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan.
TEL: 886-3-6668838
FAX: 886-3-6668836
2
®
LY61L25616
Rev. 2.3
256K X 16 BIT HIGH SPEED CMOS SRAM
PIN CONFIGURATION
A4
A3
A2
A1
A0
CE#
DQ0
DQ1
DQ2
DQ3
Vcc
Vss
DQ4
DQ5
DQ6
DQ7
WE#
A17
A16
A15
A14
A13
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
TSOP II
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
A5
A6
A7
OE#
UB#
LB#
DQ15
DQ14
DQ13
DQ12
Vss
Vcc
DQ11
DQ10
DQ9
DQ8
NC
A8
A9
A10
A11
A12
ABSOLUTE MAXIMUN RATINGS*
PARAMETER
Voltage on V
CC
relative to V
SS
Voltage on any other pin relative to V
SS
Operating Temperature
Storage Temperature
Power Dissipation
DC Output Current
SYMBOL
V
T1
V
T2
T
A
T
STG
P
D
I
OUT
RATING
-0.5 to 4.6
-0.5 to V
CC
+0.5
0 to 70(C grade)
-20 to 80(E grade)
-40 to 85(I grade)
-65 to 150
1
50
UNIT
V
V
℃
℃
W
mA
*Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress
rating only and functional operation of the device or any other conditions above those indicated in the operational sections of this
specification is not implied. Exposure to the absolute maximum rating conditions for extended period may affect device reliability.
Lyontek Inc.
reserves the rights to change the specifications and products without notice.
5F, No. 2, Industry E. Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan.
TEL: 886-3-6668838
FAX: 886-3-6668836
LY61L25616
A
B
C
D
E
F
G
H
LB# OE#
DQ8 UB#
A0
A3
A1
A4
A6
A7
A2
NC
CE# DQ0
DQ1 DQ2
DQ3 Vcc
DQ9 DQ10 A5
Vss DQ11 A17
Vcc DQ12 NC
DQ14 DQ13 A14
DQ15 NC
NC
A8
A12
A9
A16 DQ4 Vss
A15 DQ5 DQ6
A13 WE# DQ7
A10
A11
NC
1
2
3
4
TFBGA
5
6
3
®
LY61L25616
Rev. 2.3
256K X 16 BIT HIGH SPEED CMOS SRAM
TRUTH TABLE
MODE
Standby
Output Disable
Read
CE#
H
L
L
L
L
L
L
L
L
OE#
X
H
X
L
L
L
X
X
X
WE# LB#
X
H
X
H
H
H
L
L
L
X
X
H
L
H
L
L
H
L
UB#
X
X
H
H
L
L
H
L
L
I/O OPERATION
DQ0-DQ7
DQ8-DQ15
High – Z
High – Z
High – Z
High – Z
High – Z
High – Z
D
OUT
High – Z
D
OUT
High – Z
D
OUT
D
OUT
D
IN
High – Z
D
IN
High – Z
D
IN
D
IN
SUPPLY CURRENT
I
SB1
I
CC
I
CC
Write
Note:
I
CC
H = V
IH
, L = V
IL
, X = Don't care.
DC ELECTRICAL CHARACTERISTICS
PARAMETER
Supply Voltage
Input High Voltage
Input Low Voltage
Input Leakage Current
Output Leakage
Current
Output High Voltage
Output Low Voltage
Average Operating
Power supply Current
SYMBOL
V
CC
V
IH
*2
V
IL
I
LI
I
LO
V
OH
V
OL
*1
TEST CONDITION
10/12
15/20/25
V
CC
≧
V
IN
≧
V
SS
V
CC
≧
V
OUT
≧
V
SS
,
Output Disabled
I
OH
= -4mA
I
OL
= 8mA
10
12
Cycle time = Min.
CE# = V
IL
, I
I/O
= 0mA
15
Other pins at V
IL
or V
IH
20
25
10/12/15
CE#
≧
V
CC
- 0.2V,
20/25
Others at 0.2V or V
CC
- 0.2V
20/25LL
MIN.
3.15
3.0
2.2
- 0.3
-1
-1
2.4
-
-
-
-
-
-
-
-
-
TYP.
3.3
3.3
-
-
-
-
-
-
-
-
-
50
45
-
0.5
20
*4
MAX.
3.6
3.6
V
CC
+0.3
0.6
1
1
-
0.4
180
160
140
80
70
12
5
5*
6
100*
UNIT
V
V
V
V
µA
µA
V
V
mA
mA
mA
mA
mA
mA
mA
µA
I
CC
Standby Power
Supply Current
I
SB1
Notes:
1. V
IH
(max) = V
CC
+ 3.0V for pulse width less than 10ns.
2. V
IL
(min) = V
SS
- 3.0V for pulse width less than 10ns.
3. Over/Undershoot specifications are characterized, not 100% tested.
4. Typical values are included for reference only and are not guaranteed or tested.
Typical valued are measured at V
CC
= V
CC
(TYP.) and T
A
= 25℃
5. 1mA for special request
6. 50µA for special request
Lyontek Inc.
reserves the rights to change the specifications and products without notice.
5F, No. 2, Industry E. Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan.
TEL: 886-3-6668838
FAX: 886-3-6668836
4
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