WCMB4016R4X Datasheet, PDF (9/12 Pages) Weida Semiconductor, Inc. – 256K x 16 Static RAM

WCMB4016R4X
Typical DC and AC Characteristics
(Typical values are included for reference only and are not guaranteed or tested. Typical values are measured at V_CC = V_CC Typ, T_A = 25°C.)
Operating Current
vs. Supply Voltage
2.4
2.0
(f = f_max)
1.6
1.2
0.8
0.4
0.0
1.65
1.80
SUPPLY VOLTAGE (V)
(f = 1 MHz)
1.95
Standby Current vs. Supply Voltage
3.5
3.0
2.0
1.5
1.0
0.5
0
1.65
1.80
1.95
SUPPLY VOLTAGE (V)
Truth Table
CE WE
H
X
X
X
L
H
L
H
L
H
L
H
L
H
L
H
L
L
L
L
L
L
Access Time vs. Supply Voltage
40
35
30
25
20
15
10
1.65
1.8
1.95
SUPPLY VOLTAGE (V)
OE BHE BLE
Inputs/Outputs
X
X
X High Z
X
H
H High Z
L
L
L Data Out (I/O_O–I/O₁₅)
L
H
L Data Out (I/O_O–I/O₇);
I/O₈–I/O₁₅ in High Z
L
L
H Data Out (I/O₈–I/O₁₅);
I/O₀–I/O₇ in High Z
H
L
L High Z
H
H
L High Z
H
L
H High Z
X
L
L Data In (I/O_O–I/O₁₅)
X
H
L Data In (I/O_O–I/O₇);
I/O₈–I/O₁₅ in High Z
X
L
H Data In (I/O₈–I/O₁₅);
I/O₀ –I/O₇ in High Z
Mode
Deselect/Power-Down
Deselect/Power-Down
Read
Read
Read
Output Disabled
Output Disabled
Output Disabled
Write
Write
Write
Power
Standby (I_SB)
Standby (I_SB)
Active (I_CC)
Active (I_CC)
Active (I_CC)
Active (I_CC)
Active (I_CC)
Active (I_CC)
Active (I_CC)
Active (I_CC)
Active (I_CC)
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