®
LY6251216
Rev. 1.0
512K X 16 BIT LOW POWER CMOS SRAM
REVISION HISTORY
Revision
Rev. 0.1
Rev. 0.2
Rev. 0.3
Description
Initial Issue
Added I
SB
Spec.
Revised
FEATURES
&
ORDERING INFORMATION
Lead free and green package available
to
Green package
available
Added packing type in
ORDERING INFORMATION
Deleted T
SOLDER
in
ABSOLUTE MAXIMUN RATINGS
Revised V
DR
Revised
ORDERING INFORMATION
in page 11
Deleted E grade
Revised I
SB1
in page 3
Revised Notes item 1 and 2 in page 4
1. V
IH
(max) = V
CC
+ 2.0V for pulse width less than 6ns.
2. V
IL
(min) = V
SS
- 2.0V for pulse width less than 6ns.
Issue Date
Oct.14.2007
Feb.1.2008
May.20.2009
Rev. 0.4
Rev. 0.5
Rev. 0.6
Rev.1.0
Sep.11.2009
Aug.30.2010
Apr.12.2011
Aug.29.2013
Revised
ORDERING INFORMATION
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
®
LY6251216
Rev. 1.0
512K X 16 BIT LOW POWER CMOS SRAM
GENERAL DESCRIPTION
The LY6251216 is a 8,388,608-bit low power CMOS
static random access memory organized as 524,288
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 LY6251216 is well designed for low power
application, and particularly well suited for battery
back-up nonvolatile memory application.
The LY6251216 operates from a single power
supply of 4.5V ~ 5.5V and all inputs and outputs are
fully TTL compatible
FEATURES
Fast access time : 55/70ns
Low power consumption:
Operating current : 45/30mA (TYP.)
Standby current : 8μA (TYP.) LL-version
Single 4.5V ~ 5.5V 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 : 1.5V (MIN.)
Green package available
Package : 44-pin 400 mil TSOP-II
48-ball 6mm x 8mm TFBGA
PRODUCT FAMILY
Product
Family
LY6251216
LY6251216(I)
Operating
Temperature
0 ~ 70℃
-40 ~ 85℃
Vcc Range
4.5 ~ 5.5V
4.5 ~ 5.5V
Speed
55/70ns
55/70ns
Power Dissipation
Standby(I
SB1,
TYP.) Operating(Icc,TYP.)
8µA(LL)
45/30mA
8µA(LL)
45/30mA
FUNCTIONAL BLOCK DIAGRAM
PIN DESCRIPTION
SYMBOL
DESCRIPTION
Address Inputs
Chip Enable Input
Write Enable Input
Output Enable Input
Lower Byte Control
Upper Byte Control
Power Supply
Ground
Vcc
Vss
A0 - A18
CE#
WE#
OE#
LB#
UB#
V
CC
V
SS
I/O DATA
CIRCUIT
COLUMN I/O
DQ0 – DQ15 Data Inputs/Outputs
DECODER
512Kx16
MEMORY ARRAY
A0-A18
DQ0-DQ7
Lower Byte
DQ8-DQ15
Upper Byte
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
1
®
LY6251216
Rev. 1.0
512K X 16 BIT LOW POWER CMOS SRAM
PIN CONFIGURATION
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
A18
A8
A12
A9
A16 DQ4 Vss
A15 DQ5 DQ6
A13 WE# DQ7
A10
A11
NC
1
2
3
4
TFBGA
5
6
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
®
LY6251216
Rev. 1.0
512K X 16 BIT LOW POWER CMOS SRAM
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 6.5
-0.5 to V
CC
+0.5
0 to 70(C 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.
TRUTH TABLE
MODE
Standby
Output Disable
Read
CE#
H
X
L
L
L
L
L
L
L
L
OE#
X
X
H
H
L
L
L
X
X
X
WE# LB#
X
X
H
H
H
H
H
L
L
L
X
H
L
X
L
H
L
L
H
L
UB#
X
H
X
L
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
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
SB
,I
SB1
I
CC
,I
CC1
I
CC
,I
CC1
Write
Note:
I
CC
,I
CC1
H = V
IH
, L = V
IL
, X = Don't care.
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
3
®
LY6251216
Rev. 1.0
512K X 16 BIT LOW POWER CMOS SRAM
DC ELECTRICAL CHARACTERISTICS
SYMBOL
TEST CONDITION
PARAMETER
Supply Voltage
V
CC
*1
Input High Voltage
V
IH
*2
Input Low Voltage
V
IL
Input Leakage Current
I
LI
V
CC
≧
V
IN
≧
V
SS
Output Leakage
V
CC
≧
V
OUT
≧
V
SS
I
LO
Current
Output Disabled
Output High Voltage
V
OH
I
OH
= -1mA
Output Low Voltage
V
OL
I
OL
= 2mA
Cycle time = Min.
- 55
CE# = V
IL
,
I
CC
I
I/O
= 0mA
- 70
Average Operating
Other pins at V
IL
or V
IH
Power supply Current
Cycle time = 1µs
I
CC1
CE#
≦
0.2V, I
I/O
= 0mA
Other pins at 0.2V or V
CC
-0.2V
CE# = V
IH
I
SB
Other pins at V
IL
or V
IH
Standby Power
-LL
Supply Current
CE#
≧
V
CC
-0.2V
I
SB1
Other pins at 0.2V or V
CC
-0.2V -LLI
Notes:
1. V
IH
(max) = V
CC
+ 2.0V for pulse width less than 6ns.
2. V
IL
(min) = V
SS
- 2.0V for pulse width less than 6ns.
3. Over/Undershoot specifications are characterized, not 100% tested.
4. Typical values are included for reference only and are not guaranteed or tested.
Typical values are measured at V
CC
= V
CC
(TYP.) and T
A
= 25℃
MIN.
4.5
2.4
- 0.2
-1
-1
2.4
-
-
-
-
-
-
-
TYP.
5.0
-
-
-
-
-
-
45
30
6
0.2
8
8
*4
MAX.
5.5
V
CC
+0.3
0.6
1
1
-
0.4
60
50
12
2
30
50
UNIT
V
V
V
µA
µA
V
V
mA
mA
mA
mA
µA
µA
CAPACITANCE
(T
A
= 25
℃
, f = 1.0MHz)
PARAMETER
Input Capacitance
Input/Output Capacitance
SYMBOL
C
IN
C
I/O
MIN.
-
-
MAX
6
8
UNIT
pF
pF
Note : These parameters are guaranteed by device characterization, but not production tested.
AC TEST CONDITIONS
Input Pulse Levels
Input Rise and Fall Times
Input and Output Timing Reference Levels
Output Load
0.2V to V
CC
- 0.2V
3ns
1.5V
C
L
= 30pF + 1TTL, I
OH
/I
OL
= -1mA/2mA
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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