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CS62LS4008GI Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers

Part No. CS62LS4008GI
Description  Low Power CMOS SRAM 512K X 8 Bits
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Low Power CMOS SRAM
512K X 8 Bits
UC62LS4008
-20/-25
PIN DESCRIPTION
Name
Type
Function
A0 – A18
Input
Address inputs for selecting one of the 524,288 x 8 bit words in the RAM
CE\
Input
CE\ is active LOW. Chip enable must be active when data read from or write to the device. If chip
enable is not active, the device is deselected and not in a standby power down mode. The DQ
pins will be in high impedance state when the device is deselected.
WE\
Input
The Write enable input is active LOW and controls read and write operations. With the chip
selected, when WE\ is HIGH and OE\ is LOW, output data will be present on the DQ pins, when
WE\ is LOW, the data present on the DQ pins will be written into the selected memory location.
OE\
Input
The output enable input is active LOW. If the output enable is active while the chip is selected
and the write enable is inactive, data will be present on the DQ pins and they will be enabled.
The DQ pins will be in the high impedance state when OE\ is inactive.
DQ0 – DQ7
I/O
These 8 bi-directional ports are used to read data from or write data into the RAM.
Vcc
Power
Power Supply
Gnd
Power
Ground
TRUTH TABLE
Mode
WE\
CE\
OE\
I/O state
Vcc Current
Not Selected
X
H
X
High Z
ISB,ISB1
Output Disabled
H
L
H
High Z
ICC
Read
H
L
L
DOUT
ICC
Write
L
L
X
DIN
ICC
ABSOLUTE MAXIMUM RATINGS
(1)
SYMBOL
PARAMETER
RATING
UNIT
VTERM
Terminal Voltage with
Respect to GND
-0.5 to VCC+0.5
V
TBIAS
Temperature Under Bias
-40 to 125
TSTG
Storage Temperature
-50 to 150
PT
Power Dissipation
1
W
IOUT
DC Output Current
20
mA
1. 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 at these or any other conditions above those
indicated in the operational sections of this specification is not
implied. Exposure to absolute maximum rating conditions for
extended periods may affect reliability.
OPERATING RANGE
RANGE
AMBIENT
TEMPERATURE
VCC
Commercial
0℃ to 70℃
3.0V ~ 3.6V
CAPACITANCE
(1)(TA=25℃,f=1.0MHz)
SYMBOL
PARAMETER
CONDITIONS MAX.
UNIT
CIN
Input
Capacitance
VIN=0V
6
pF
CDQ
Input/Output
Capacitance
VDQ
8
pF
1. This parameter is guaranteed and not 100% tested.
U-Chip Technology Corp. LTD.
.
Preliminary
Rev.1.0
Reserves the right to modify document contents without notice.
PAGE
2




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