®
LY622568
256K X 8 BIT LOW POWER CMOS SRAM
Rev. 2.4
PIN CONFIGURATION
A17
A16
A14
A12
A7
1
2
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
Vcc
A15
CE2
WE#
A13
A8
3
4
5
A11
A9
A8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
OE#
A10
CE#
DQ7
DQ6
DQ5
DQ4
DQ3
Vss
DQ2
DQ1
DQ0
A0
A6
6
A13
WE#
CE2
A15
Vcc
A17
A16
A14
A12
A7
A5
7
A9
8
A4
A11
OE#
A10
CE#
DQ7
DQ6
DQ5
DQ4
DQ3
A3
9
LY622568
A2
10
11
12
13
14
15
16
A1
A0
A6
A5
A4
A1
A2
A3
DQ0
DQ1
DQ2
Vss
TSOP-I/STSOP
SOP/P-DIP
ABSOLUTE MAXIMUN RATINGS*
PARAMETER
SYMBOL
VT1
RATING
-0.5 to 6.5
UNIT
Voltage on VCC relative to VSS
Voltage on any other pin relative to VSS
V
V
VT2
-0.5 to VCC+0.5
0 to 70(C grade)
-20 to 80(E grade)
-40 to 85(I grade)
-65 to 150
℃
Operating Temperature
TA
℃
W
Storage Temperature
Power Dissipation
DC Output Current
TSTG
PD
1
IOUT
50
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
CE#
H
CE2
X
OE#
X
WE#
X
SUPPLY CURRENT
MODE
I/O OPERATION
High-Z
ISB1
Standby
High-Z
ISB1
X
L
X
X
Output Disable
Read
High-Z
ICC,ICC1
ICC,ICC1
ICC,ICC1
L
H
H
H
DOUT
L
H
L
H
Write
DIN
L
H
X
L
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
2
LYONTEK [ Lyontek Inc. ]
