Rev. 1.1
UTRON
UT62L2568
256K X 8 BIT LOW POWER CMOS SRAM
TRUTH TABLE
MODE
Standby
Output Disable
Read
Write
CE CE2 OE
H
X
X
X
L
X
L
H
H
L
H
L
L
H
X
Note: H = VIH, L=VIL, X = Don't care.
ABSOLUTE MAXIMUM RATINGS*
WE
I/O OPERATION SUPPLY CURRENT
X
High - Z
ISB,ISB1
X
High - Z
ISB,ISB1
H
High - Z
ICC,ICC1,ICC2
H
DOUT
ICC,ICC1,ICC2
L
DIN
ICC,ICC1,ICC2
PARAMETER
SYMBOL
RATING
UNIT
Terminal Voltage with Respect to VSS
Operating Temperature
Commercial
Extended
Storage Temperature
VTERM
TA
TA
TSTG
-0.5 to 4.6
V
0 to 70
℃
-20 to 80
℃
-65 to 150
℃
Power Dissipation
PD
1
W
DC Output Current
Soldering Temperature (under 10 secs)
IOUT
Tsolder
50
mA
260
℃
*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.
DC ELECTRICAL CHARACTERISTICS (VCC =2.5V~3.6V, TA =0℃ to 70℃ / -20℃ to 80℃(E))
PARAMETER
SYMBOL TEST CONDITION
MIN. TYP. MAX. UNIT
Power Voltage
Input High Voltage
Input Low Voltage
Input Leakage Current
Output Leakage Current
Output High Voltage
Output Low Voltage
55 2.7 3.0 3.6 V
VCC
70/100 2.5 3.0 3.6
V
VIH*1
VIL*2
2.2 - Vcc+0.3 V
- 0.2 -
0.6 V
ILI
VSS ≦VIN ≦VCC
-1 -
1
µA
ILO
VSS ≦VI/O ≦VCC, Output Disabled
-1 -
1
µA
VOH IOH= - 1mA (IOH= -0.5mA when Vcc<2.7V) 2.2 2.7
-
V
VOL IOL= 2.1mA
--
0.4 V
Cycle time=Min.100% duty,
55
- 20 35 mA
Operating Current
ICC CE =VIL and CE2 = VIH,
70
- 18
II/O =0mA
100
- 15
ICC1
100%duty, II/O=0mA, CE ≦0.2V TCycle=
and CE2≧Vcc-0.2V, other pins 1µs
-
4
ICC2 at 0.2V or Vcc-0.2V
TCycle= - 8
500ns
30 mA
25 mA
5
mA
10 mA
Standby Current (TTL)
ISB CE =VIH or CE2 = VIL
- 0.3 0.5 mA
Standby Current (CMOS) ISB1 CE =VCC-0.2V or CE2=0.2V,
other pins at 0.2V or Vcc-0.2V
-L - 20 80 µA
-LL - 2
20 µA
Notes:
1. Overshoot : Vcc+3.0v for pulse width less than 10ns.
2. Undershoot : Vss-3.0v for pulse width less than 10ns.
3. Overshoot and Undershoot are sampled, not 100% tested.
UTRON TECHNOLOGY INC.
1F, No. 11, R&D Rd. II, Science-Based Industrial Park, Hsinchu, Taiwan, R. O. C.
TEL: 886-3-5777882 FAX: 886-3-5777919
4
P80059