merging Memory & Logic Solutions Inc.
ABSOLUTE MAXIMUM RATINGS *
Parameter
Voltage on Any Pin Relative to Vss
Voltage on Vcc supply relative to Vss
Power Dissipation
Operating Temperature
EM641FU16E Series
Low Power, 256Kx16 SRAM
Symbol
V
IN
, V
OUT
V
CC
P
D
T
A
Ratings
-0.2 to Vcc+0.3 (Max. 4.0V)
-0.2 to 4.0V
1.0
-40 to 85
Unit
V
V
W
o
C
*
Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. Functional
operation should be restricted to recommended operating condition. Exposure to absolute maximum rating conditions for extended
periods may affect reliability.
FUNCTIONAL DESCRIPTION
CS
H
X
L
L
L
L
L
L
L
L
OE
X
X
H
H
L
L
L
X
X
X
WE
X
X
H
H
H
H
H
L
L
L
LB
X
H
L
X
L
H
L
L
H
L
UB
X
H
X
L
H
L
L
H
L
L
I/O
1-8
High-Z
High-Z
High-Z
High-Z
Data Out
High-Z
Data Out
Data In
High-Z
Data in
I/O
9-16
High-Z
High-Z
High-Z
High-Z
High-Z
Data Out
Data Out
High-Z
Data In
Data In
Mode
Deselected
Deselected
Output Disabled
Output Disabled
Lower Byte Read
Upper Byte Read
Word Read
Lower Byte Write
Upper Byte Write
Word Write
Power
Stand by
Stand by
Active
Active
Active
Active
Active
Active
Active
Active
Note: X means don’t care. (Must be low or high state)
3
EMLSI [ Emerging Memory & Logic Solutions Inc ]
