®
LY61L2568
256K X 8 BIT HIGH SPEED CMOS SRAM
Rev. 1.0
ABSOLUTE MAXIMUN RATINGS*
PARAMETER
SYMBOL
VT1
RATING
UNIT
V
Voltage on VCC relative to VSS
Voltage on any other pin relative to VSS
-0.5 to 4.6
VT2
-0.5 to VCC+0.5
0 to 70(C grade)
-40 to 85(I grade)
-65 to 150
V
℃
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
OE#
X
WE#
X
SUPPLY CURRENT
MODE
I/O OPERATION
High-Z
Standby
ISB1
ICC
ICC
ICC
Output Disable
Read
L
H
H
High-Z
L
L
H
DOUT
Write
L
X
L
DIN
Note: H = VIH, L = VIL, X = Don't care.
DC ELECTRICAL CHARACTERISTICS
SYMBOL
TEST CONDITION
MIN.
3.0
2.2
- 0.3
- 1
TYP. *4 MAX.
UNIT
PARAMETER
Supply Voltage
VCC
3.3
3.6
VCC+0.3
0.6
V
V
V
*1
Input High Voltage
Input Low Voltage
Input Leakage Current
Output Leakage
Current
VIH
VIL
-
-
-
*2
ILI
V
V
CC ≧ VIN ≧ VSS
CC ≧ VOUT ≧ VSS,
Output Disabled
1
A
µ
ILO
- 1
-
1
A
µ
Output High Voltage
Output Low Voltage
VOH IOH = -1mA
2.4
-
-
-
V
V
VOL
IOL = 2mA
-
-
-
-
-
-
-
0.4
150
115
50
20
25
20LL
25LL
Normal
110
90
40
35
0.5
10
mA
mA
mA
mA
mA
Cycle time = Min.
Average Operating
Power supply Current
ICC
CE# = VIL , II/O = 0mA
Others at VIL or VIH
45
5*5
Standby Power
Supply Current
Notes:
CE# ≧VCC - 0.2V
Others at 0.2V or VCC - 0.2V20/25LL
ISB1
50*6
A
µ
1. VIH(max) = VCC + 2.0V for pulse width less than 6ns.
2. VIL(min) = VSS - 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 valued are measured at VCC = VCC(TYP.) and TA = 25
5. 1mA for special request
6. 20 A for special request
µ
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