LY61L25616A
Rev. 1.4
256K X 16 BIT HIGH SPEED CMOS SRAM
REVISION HISTORY
Revision
Rev. 1.0
Rev. 1.1
Description
Initial Issue
“CE#
≧
V
CC
- 0.2V” revised as ”CE#
≦
0.2V” for
TEST CONDITION
of Average Operating Power supply Current
Icc1 on page3
Revised V
IH(max)
/V
IL(min)
in
Issue Date
Jul.12.2012
Jul.19.2012
Rev. 1.2
May.7.2013
DC ELECTRICAL CHARACTERISTICS
Added in t
BA
/t
BHZ*
/t
BLZ*
in
AC ELECTRICAL CHARACTERISTICS
Added
WRITE CYCLE 3
in
TIMING WAVEFORMS
1. Revise “TEST
CONDITION”
for V
OH
, V
OL
on page 5
I
OH
= -8mA revised as -4mA
I
OL
=4mA revised as 8mA
2. Revise V
IH(max)
& V
IL(min)
note on page 5
V
IH(max)
= V
CC
+ 2.0V for pulse width less than 6ns.
V
IL(min)
= V
SS
- 2.0V for pulse width less than 6ns.
Revised the address pin sequence of TSOP-II pin configuration on
page 3 in order to be compatible with industry convention. (No
function specifications and applications have been changed and all
the characteristics are kept all the same as Rev 1.3 )
Added t
BW
in
AC ELECTRICAL CHARACTERISTICS
Revised
WRITE CYCLE 1,2
in
TIMING WAVEFORMS
Rev. 1.3
Jun.04.2013
Rev. 1.4
Sep.23.2013
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
LY61L25616A
Rev. 1.4
256K X 16 BIT HIGH SPEED CMOS SRAM
GENERAL DESCRIPTION
The LY61L25616A is a 4,194,304-bit high speed
CMOS static random access memory organized as
262144 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 LY61L25616A operates from a single power
supply of 3.3V and all inputs and outputs are fully
TTL compatible
FEATURES
Fast access time : 8/10/12ns
Low power consumption:
Operating current:
50/40/35mA(TYP.)
Standby current:
2mA(TYP.)
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 : 1.5V (MIN.)
Green package available
Package : 44-pin 400 mil TSOP-II
48-ball 6mmx8mm TFBGA
PRODUCT FAMILY
Product
Family
LY61L25616A
LY61L25616A(I)
Operating
Temperature
0 ~ 70℃
-40 ~ 85℃
Vcc Range
2.7 ~ 3.6V
3.0 ~ 3.6V
2.7 ~ 3.6V
3.0 ~ 3.6V
Speed
10/12ns
8ns
10/12ns
8ns
Power Dissipation
Standby(I
SB1,
TYP.) Operating(I
CC1
,TYP.)
2mA
40/35mA
2mA
50mA
2mA
40/35mA
2mA
50mA
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
LY61L25616A
Rev. 1.4
256K X 16 BIT HIGH SPEED CMOS SRAM
PIN DESCRIPTION
SYMBOL
DESCRIPTION
Address Inputs
Data Inputs/Outputs
Chip Enable Inputs
Write Enable Input
Output Enable Input
Lower Byte Control
Upper Byte Control
Power Supply
Ground
No Connection
FUNCTIONAL BLOCK DIAGRAM
Vcc
Vss
A0 - A17
DQ0 – D15
DECODER
256Kx16
MEMORY ARRAY
A0-A17
CE#
WE#
OE#
LB#
UB#
V
CC
DQ0-DQ7
Lower Byte
DQ8-DQ15
Upper Byte
V
SS
I/O DATA
CIRCUIT
COLUMN I/O
NC
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
LY61L25616A
Rev. 1.4
256K X 16 BIT HIGH SPEED CMOS SRAM
PIN CONFIGURATION
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
LY61L25616A
Rev. 1.4
256K X 16 BIT HIGH SPEED 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 4.6
-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
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
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
4
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