UTRON
UT62V25716(I)
Rev. 1.0
256K X 16 BIT LOW POWER CMOS SRAM
UTRON TECHNOLOGY INC. P80066
1F, No. 11, R&D Rd. II, Science-Based Industrial Park, Hsinchu, Taiwan, R. O. C.
TEL: 886-3-5777882 FAX: 886-3-5777919
2
ABSOLUTE MAXIMUM RATINGS
*
PARAMETER SYMBOL RATING UNIT
Terminal Voltage with Respect to V
SS
V
TERM
-0.3 to 4.6 V
Operating Temperature
Industrial T
A
-40℃~85℃℃
Storage Temperature T
STG
-65 to 150
℃
Power Dissipation P
D
1.0~1.5 W
DC Output Current I
OUT
20 mA
Soldering Temperature (under 10 secs) Tsolder 260.10
℃.sec
*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
1
CE
CE2
OE
WE LB
UB
I/O1-I/O8 I/O9-I/O16
SUPPLY
CURRENT
H X X X X X High – Z High – Z ISB, I
SB1
X L X X X X High – Z High – Z ISB, I
SB1
Standby
XXXXH HHigh – ZHigh – Z I
SB
, I
SB1
Output
Disable
L
L
H
H
H
H
H
H
L
X
XLHigh – Z
High – Z
High – Z
High – Z
ICC,I
CC1,ICC2
Read L
L
L
H
H
H
L
L
L
H
H
H
L
H
L
H
L
L
D
OUT
High – Z
D
OUT
High – Z
D
OUT
D
OUT
ICC,I
CC1,ICC2
Write L
L
L
H
H
H
X
X
X
L
L
L
L
H
L
H
L
L
D
IN
High – Z
D
IN
High – Z
D
IN
D
IN
ICC,I
CC1,ICC2
Note: H = VIH, L=VIL, X = Don't care.(Must be low or high state)
DC ELECTRICAL CHARACTERISTICS
(Vcc = 2.3V~2.7V, TA = -40℃~85℃(I))
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX. UNIT
Power Voltage Vcc
2.3 2.5 2.7
V
Input High Voltage V
IH
2.0 - Vcc+0.3
V
Input Low Voltage V
IL
- 0.2 - 0.6
V
Input Leakage Current I
LI
VSS ≦VIN ≦Vcc
- 1 - 1
µA
Output Leakage Current I
LO
VSS ≦V
I/O
≦Vcc, Output Disabled
- 1 - 1
µA
Output High Voltage V
OH
IOH= - 0.5mA
2.0 - -
V
Output Low Voltage V
OL
IOL= 0.5mA
-- 0.4
V
70
-20 30
mAI
CC
Cycle time =min,100% duty, I
I/O
=0mA,
CE2=V
IH
,
1CE
=V
IL, VIN=VIH
or VIL,
100
-
15 20
mA
Icc1 Cycle time = 1us,100% duty, I
I/O
=0mA,
1CE
≦
0.2V, CE2≧Vcc-0.2V
other pins at 0.2V or Vcc-0.2V,
-3 4
mA
Operating Power
Supply Current
Icc2 Cycle time =500ns,100% duty, I
I/O
=0mA,
1CE
≦
0.2V, CE2≧Vcc-0.2V
other pins at 0.2V or Vcc-0.2V,
-6 8
mA
Standby Current (TTL) I
SB
1CE
=V
IH,
or CE2=VIH,other pins =VIH or VIL,
-0.3 0.5
mA
-L
-20 80
µAStandby Current (CMOS) I
SB1
1CE
≧
V
CC
-0.2V,or CE2 ≦0.2V,
other pins at 0.2V or Vcc-0.2V,
-LL
-2 15
µA