Lyontek LY62W10248ML-70LL 1024k x 8 bit low power cmos sram Datasheet


LY62W10248
1024K X 8 BIT LOW POWER CMOS SRAM
Rev. 1.7
REVISION HISTORY
Revision
Rev. 1.0
Rev. 1.1
Rev. 1.2
Rev. 1.3
Rev. 1.4
Rev. 1.5
Rev. 1.6
Rev. 1.7
Description
Initial Issue
Added ISB Spec.
Revised ICC1/ISB1/VDR/IDR Spec.
Revised VTERM to VT1 and VT2
Revised Test Condition of ISB1/IDR
Revised FEATURES & ORDERING INFORMATION
Lead free and green package available to Green package
available
Added packing type in ORDERING INFORMATION
Deleted TSOLDER in ABSOLUTE MAXIMUN RATINGS
Revised PACKAGE OUTLINE DIMENSION in page 11
Revised VIH to 0.7*Vcc
Revised ORDERING INFORMATION in page 11
Deleted E grade
Added SL grade
Revised VIH in page 3
Revised TEST CONDITION of VIH in page 4
Revised PACKAGE
OUTLINE DIMENSION in page 10
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
Issue Date
Jan.10.2008
Feb.1.2008
Mar.2.2009
May.7.2010
Aug.25.2010
Apr.25.2011
May.13.2011
Jul.27.2011

LY62W10248
1024K X 8 BIT LOW POWER CMOS SRAM
Rev. 1.7
FEATURES
GENERAL DESCRIPTION
 Fast access time : 55/70ns
 Low power consumption:
Operating current : 30/20mA (TYP.)
Standby current : 6A (TYP.) LL-version
3A (TYP.) SL-version
 Single 2.7V ~ 5.5V power supply
 All inputs and outputs TTL compatible
 Fully static operation
 Tri-state output
 Data retention voltage : 1.5V (MIN.)
 Green package available
 Package : 44-pin 400 mil TSOP-II
48-ball 6mm x 8mm TFBGA
The LY62W10248 is a 8,388,608-bit low power
CMOS static random access memory organized as
1,048,576 words by 8 bits. It is fabricated using very
high performance, high reliability CMOS technology.
Its standby current is stable within the range of
operating temperature.
The LY62W10248 is well designed for very low
power system applications, and particularly well
suited for battery back-up nonvolatile memory
application.
The LY62W10248 operates from a single power
supply of 2.7V ~ 5.5V and all inputs and outputs are
fully TTL compatible
PRODUCT FAMILY
Product
Family
LY62W10248
LY62W10248(I)
Operating
Temperature
0 ~ 70℃
-40 ~ 85℃
Vcc Range
Speed
2.7 ~ 5.5V
2.7 ~ 5.5V
55/70ns
55/70ns
FUNCTIONAL BLOCK DIAGRAM
PIN DESCRIPTION
Vcc
Vss
A0-A19
DECODER
DQ0-DQ7
I/O DATA
CIRCUIT
CE#
CE2
WE#
OE#
CONTROL
CIRCUIT
Power Dissipation
Standby(ISB1,TYP.) Operating(Icc,TYP.)
6µA(LL)/3µA(SL)
30/20mA
6µA(LL)/3µA(SL)
30/20mA
1024Kx8
MEMORY ARRAY
SYMBOL
DESCRIPTION
A0 - A19
Address Inputs
DQ0 – DQ7
Data Inputs/Outputs
CE#, CE2
Chip Enable Inputs
WE#
Write Enable Input
OE#
Output Enable Input
VCC
Power Supply
VSS
Ground
NC
No Connection
COLUMN I/O
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

LY62W10248
1024K X 8 BIT LOW POWER CMOS SRAM
Rev. 1.7
PIN CONFIGURATION
1
44
A5
A3
2
43
A6
A2
3
42
A7
A1
4
41
OE#
A0
5
40
CE2
CE#
6
39
A8
NC
7
38
NC
NC
8
37
NC
36
DQ7
35
DQ6
34
Vss
33
Vcc
32
DQ5
31
DQ4
30
DQ0
9
DQ1
10
Vcc
11
Vss
12
DQ2
13
DQ3
14
NC
15
LY62W10248
A4
A
NC
OE#
A0
A1
A2
CE2
B
NC
NC
A3
A4
CE#
NC
NC
C
DQ0
NC
A5
A6
NC
DQ4
NC
16
29
NC
D
Vss DQ1 A17
A7
WE#
17
28
A9
E
Vcc DQ2
NC
A16 DQ6 Vss
A19
18
27
A10
A18
19
26
A11
F
DQ3
NC
A14
A15
A17
20
25
A12
G
NC
NC
A12
A13 WE#
NC
A16
21
24
A13
H
A18
A8
A9
A10
A11
A19
A15
22
23
A14
1
2
3
4
TFBGA
5
6
TSOP-II
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
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DQ5 Vcc
NC
DQ7

LY62W10248
1024K X 8 BIT LOW POWER CMOS SRAM
Rev. 1.7
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Voltage on VCC relative to VSS
Voltage on any other pin relative to VSS
SYMBOL
VT1
VT2
Operating Temperature
TA
Storage Temperature
Power Dissipation
DC Output Current
TSTG
PD
IOUT
RATING
-0.5 to 6.5
-0.5 to VCC+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
CE#
CE2
OE#
WE#
H
X
X
X
I/O OPERATION
High-Z
SUPPLY CURRENT
ISB,ISB1
X
L
X
X
High-Z
ISB,ISB1
Output Disable
L
H
H
H
High-Z
ICC,ICC1
Read
L
H
L
H
DOUT
ICC,ICC1
L
H
X
L
DIN
ICC,ICC1
Write
Note:
H = VIH, L = VIL, 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
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
LY62W10248
1024K X 8 BIT LOW POWER CMOS SRAM
Rev. 1.7
DC ELECTRICAL CHARACTERISTICS
PARAMETER
Supply Voltage
SYMBOL
VCC
Input High Voltage
VIH
Input Low Voltage
Input Leakage Current
Output Leakage
Current
Output High Voltage
Output Low Voltage
VIL
ILI
*1
VCC = 2.7 ~ 3.6V
VCC = 4.5 ~ 5.5V
*2
ILO
VOH
VOL
ICC
Average Operating
Power supply Current
ICC1
ISB
Standby Power
Supply Current
TEST CONDITION
ISB1
VCC ≧ VIN ≧ VSS
VCC ≧ VOUT ≧ VSS
Output Disabled
IOH = -1mA
IOL = 2mA
Cycle time = Min.
- 55
CE# = VIL and CE2 = VIH
II/O = 0mA
- 70
Other pins at VIL or VIH
Cycle time = 1µ s
CE#≦0.2V and CE2≧VCC-0.2V
II/O = 0mA
Other pins at 0.2V or VCC-0.2V
CE# = VIH or CE2 = VIL
Other pins at VIL or VIH
LL
LLI
CE# ≧VCC-0.2V
*5
25℃
SL
or CE2≦0.2V
*5
SLI
Other pins at 0.2V
40℃
or VCC-0.2V
SL
SLI
MIN.
2.7
2.2
2.4
- 0.2
-1
TYP.
3.0
-
*4
MAX.
5.5
VCC+0.5
VCC+0.5
0.6
1
UNIT
V
V
V
V
µA
-1
-
1
µA
2.4
-
2.7
-
0.4
V
V
-
30
60
mA
-
20
50
mA
-
4
12
mA
-
0.15
2
mA
-
6
6
3
3
3
3
30
50
10
10
20
25
µA
µA
µA
µA
µA
µA
Notes:
1. VIH(max) = VCC + 3.0V for pulse width less than 10ns.
2. VIL(min) = VSS - 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 values are measured at VCC = VCC(TYP.) and TA = 25℃
CAPACITANCE (TA = 25℃, f = 1.0MHz)
PARAMETER
Input Capacitance
Input/Output Capacitance
SYMBOL
CIN
CI/O
MIN.
-
MAX
6
8
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 VCC - 0.2V
3ns
1.5V
CL = 30pF + 1TTL, IOH/IOL = -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
UNIT
pF
pF

LY62W10248
1024K X 8 BIT LOW POWER CMOS SRAM
Rev. 1.7
AC ELECTRICAL CHARACTERISTICS
(1) READ CYCLE
PARAMETER
Read Cycle Time
Address Access Time
Chip Enable Access Time
Output Enable Access Time
Chip Enable to Output in Low-Z
Output Enable to Output in Low-Z
Chip Disable to Output in High-Z
Output Disable to Output in High-Z
Output Hold from Address Change
(2) WRITE CYCLE
PARAMETER
Write Cycle Time
Address Valid to End of Write
Chip Enable to End of Write
Address Set-up Time
Write Pulse Width
Write Recovery Time
Data to Write Time Overlap
Data Hold from End of Write Time
Output Active from End of Write
Write to Output in High-Z
SYM.
tRC
tAA
tACE
tOE
tCLZ*
tOLZ*
tCHZ*
tOHZ*
tOH
SYM.
tWC
tAW
tCW
tAS
tWP
tWR
tDW
tDH
tOW *
tWHZ*
LY62W10248-55
MIN.
MAX.
55
55
55
30
10
5
20
20
10
-
LY62W10248-70
MIN.
MAX.
70
70
70
35
10
5
25
25
10
-
UNIT
LY62W10248-55
MIN.
MAX.
55
50
50
0
45
0
25
0
5
20
LY62W10248-70
MIN.
MAX.
70
60
60
0
55
0
30
0
5
25
UNIT
*These parameters are guaranteed by device characterization, but not production tested.
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
5
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns

LY62W10248
1024K X 8 BIT LOW POWER CMOS SRAM
Rev. 1.7
TIMING WAVEFORMS
READ CYCLE 1 (Address Controlled) (1,2)
tRC
Address
tAA
Dout
tOH
Previous Data Valid
Data Valid
READ CYCLE 2 (CE# and CE2 and OE# Controlled) (1,3,4,5)
tRC
Address
tAA
CE#
tACE
CE2
OE#
tOE
tOH
tOHZ
tCHZ
tOLZ
tCLZ
Dout
High-Z
Data Valid
High-Z
Notes :
1.WE# is high for read cycle.
2.Device is continuously selected OE# = low, CE# = low., CE2 = high.
3.Address must be valid prior to or coincident with CE# = low, CE2 = high; otherwise tAA is the limiting parameter.
4.tCLZ, tOLZ, tCHZ and tOHZ are specified with CL = 5pF. Transition is measured ±500mV from steady state.
5.At any given temperature and voltage condition, tCHZ is less than tCLZ , tOHZ is less than tOLZ.
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
6

LY62W10248
1024K X 8 BIT LOW POWER CMOS SRAM
Rev. 1.7
WRITE CYCLE 1 (WE# Controlled) (1,2,3,5,6)
tWC
Address
tAW
CE#
tCW
CE2
tAS
tWP
tWR
WE#
tWHZ
Dout
TOW
High-Z
(4)
tDW
Din
(4)
tDH
Data Valid
WRITE CYCLE 2 (CE# and CE2 Controlled) (1,2,5,6)
tWC
Address
tAW
CE#
tAS
tWR
tCW
CE2
tWP
WE#
tWHZ
Dout
High-Z
(4)
tDW
Din
tDH
Data Valid
Notes :
1.WE#, CE# must be high or CE2 must be low during all address transitions.
2.A write occurs during the overlap of a low CE#, high CE2, low WE#.
3.During a WE#controlled write cycle with OE# low, tWP must be greater than tWHZ + tDW to allow the drivers to turn off and data to be
placed on the bus.
4.During this period, I/O pins are in the output state, and input signals must not be applied.
5.If the CE#low transition and CE2 high transition occurs simultaneously with or after WE# low transition, the outputs remain in a high
impedance state.
6.tOW and tWHZ are specified with CL = 5pF. Transition is measured ±500mV from steady state.
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
7

LY62W10248
1024K X 8 BIT LOW POWER CMOS SRAM
Rev. 1.7
DATA RETENTION CHARACTERISTICS
PARAMETER
SYMBOL
TEST CONDITION
MIN.
VCC for Data Retention
VDR
1.5
CE# ≧ VCC - 0.2V or CE2≦0.2V
LL
LLI
VCC = 1.5V
25℃
SL
Data Retention Current
IDR
CE# ≧VCC-0.2V or CE2≦0.2V
SLI 40℃
Other pins at 0.2V or VCC-0.2V
SL
SLI
Chip Disable to Data
See Data Retention
tCDR
0
Retention Time
Waveforms (below)
Recovery Time
tR
tRC*
tRC* = Read Cycle Time
DATA RETENTION WAVEFORM
Low Vcc Data Retention Waveform (1) (CE# controlled)
VDR ≧ 1.5V
Vcc
Vcc(min.)
Vcc(min.)
tCDR
CE#
VIH
tR
CE# ≧ Vcc-0.2V
VIH
Low Vcc Data Retention Waveform (2) (CE2 controlled)
VDR ≧ 1.5V
Vcc
Vcc(min.)
Vcc(min.)
tCDR
CE2
tR
CE2 ≦ 0.2V
VIL
VIL
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
8
TYP.
4
4
3
3
3
3
MAX.
5.5
30
50
10
10
20
25
UNIT
V
µA
µA
µA
µA
µA
µA
-
-
ns
-
-
ns

LY62W10248
1024K X 8 BIT LOW POWER CMOS SRAM
Rev. 1.7
PACKAGE OUTLINE DIMENSION
θ
44-pin 400mil TSOP-II Package Outline Dimension
SYMBOLS
A
A1
A2
b
c
D
E
E1
e
L
ZD
y
Θ
DIMENSIONS IN MILLMETERS
MIN.
NOM.
MAX.
1.20
0.05
0.10
0.15
0.95
1.00
1.05
0.30
0.45
0.12
0.21
18.212
18.415
18.618
11.506
11.760
12.014
9.957
10.160
10.363
0.800
0.40
0.50
0.60
0.805
0.076
o
o
o
0
3
6
DIMENSIONS IN MILS
MIN.
NOM.
MAX.
47.2
2.0
3.9
5.9
37.4
39.4
41.3
11.8
17.7
4.7
8.3
717
725
733
453
463
473
392
400
408
31.5
15.7
19.7
23.6
31.7
3
o
o
o
0
3
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
9

LY62W10248
Rev. 1.7
1024K X 8 BIT LOW POWER CMOS SRAM
48-ball 6mm × 8mm TFBGA Package Outline Dimension
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
10

LY62W10248
Rev. 1.7
1024K X 8 BIT LOW POWER CMOS SRAM
ORDERING INFORMATION
LY62W10248 U V - WW XX Y Z
Z : Packing Type
Blank : Tube or Tray
Tray : 44-pin 400 mil TSOP-II
48-ball 6 mm x 8 mm TFBGA
T : Tape Reel
Y : Temperature Range
Blank : (Commercial) 0°C ~ 70°C
I : (Industrial) -40°C ~ +85°C
XX : Power Type
LL : Ultra Low Power
SL : Special Ultra Low Power
WW : Access Time(Speed)
V : Lead Information
L : Green Package
U : Package Type
M : 44-pin 400 mil TSOP-II
G : 48-ball 6 mm x 8 mm TFBGA
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
11

LY62W10248
Rev. 1.7
1024K X 8 BIT LOW POWER CMOS SRAM
THIS PAGE IS LEFT BLANK INTENTIONALLY.
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
12
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