BSI
PIN DESCRIPTIONS
BS62LV4006
Function
These 19 address inputs select one of the 524,288 x 8-bit words in the RAM
CE is active LOW. Chip enables must be active when data read from or write to the
device. if chip enable is not active, the device is deselected and is in a standby power
mode. The DQ pins will be in the high impedance state when the device is deselected.
Name
A0-A18 Address Input
CE Chip Enable Input
WE Write Enable 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 Output Enable 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 Data Input/Output
Ports
Vcc
GND
These 8 bi-directional ports are used to read data from or write data into the RAM.
Power Supply
Ground
TRUTH TABLE
MODE
Not selected
Output Disabled
Read
Write
WE
X
H
H
L
CE
H
L
L
L
OE
X
H
L
X
I/O OPERATION
High Z
High Z
D
OUT
D
IN
Vcc CURRENT
I
CCSB
, I
CCSB1
I
CC
I
CC
I
CC
ABSOLUTE MAXIMUM RATINGS
(1)
SYMBOL
V
TERM
T
BIAS
T
STG
P
T
I
OUT
PARAMETER
Terminal Voltage
Respect to GND
with
OPERATING RANGE
UNITS
V
O
O
RATING
-0.5 to
Vcc+0.5
-40 to +85
-60 to +150
1.0
20
RANGE
Commercial
Industrial
AMBIENT
TEMPERATURE
0
O
C to +70
O
C
-40
O
C to +85
O
C
Vcc
2.4V ~ 5.5V
2.4V ~ 5.5V
Temperature Under Bias
Storage Temperature
Power Dissipation
DC Output Current
C
C
W
mA
CAPACITANCE
(1)
(TA = 25
o
C, f = 1.0 MHz)
SYMBOL
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.
C
IN
C
DQ
PARAMETER
Input
Capacitance
Input/Output
Capacitance
CONDITIONS
MAX.
UNIT
V
IN
=0V
V
I/O
=0V
6
8
pF
pF
1. This parameter is guaranteed and not 100% tested.
R0201-BS62LV4006
2
Revision 1.1
Jan.
2004
BSI [ BRILLIANCE SEMICONDUCTOR ]
