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White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
WS256K32-XXX
Parameter Symbol Min Max Unit
Operating Temperature T
A -55 +125 °C
Storage Temperature T
STG -65 +150 °C
Signal Voltage Relative to GND V
G -0.5 Vcc+0.5 V
Junction Temperature T
J 150 °C
Supply Voltage V
CC -0.5 7.0 V
TRUTH TABLE
RECOMMENDED OPERATING CONDITIONS
ABSOLUTE MAXIMUM RATINGS
Parameter Symbol Min Max Unit
Supply Voltage V
CC 4.5 5.5 V
Input High Voltage V
IH 2.2 VCC + 0.3 V
Input Low Voltage V
IL -0.5 +0.8 V
Operating Temp (Mil) T
A -55 +125 °C
CS OE WE Mode Data I/O Power
H X X Standby High Z Standby
L L H Read Data Out Active
L H H Out Disable High Z Active
L X L Write Data In Active
CAPACITANCE
(TA = +25°C)
Parameter
Symbol
Conditions Max Unit
OE capacitance COE
V
IN
= 0 V, f = 1.0 MHz
28 pF
WE
1-2 capacitance CWE
V
IN
= 0 V, f = 1.0 MHz
pF
HIP (PGA) 20
CQFP G4 28
CS1-2 capacitance CCS
V
IN
= 0 V, f = 1.0 MHz
20 pF
Data I/O capacitance CI/O
V
I/O
= 0 V, f = 1.0 MHz
20 pF
Address input capacitance C
AD
V
IN
= 0 V, f = 1.0 MHz
28 pF
This parameter is guaranteed by design but not tested.
Parameter Symbol Conditions Units
Min Max
Input Leakage Current ILI VCC = 5.5, VIN = GND to VCC 10 µA
Output Leakage Current ILO CS = VIH, OE = VIH, VOUT = GND to VCC 10 µA
Operating Supply Current x 32 Mode ICC x 32 CS = VIL, OE = VIH, f = 5MHz, Vcc = 5.5 550 mA
Standby Current ISB CS = VIH, OE = VIH, f = 5MHz, Vcc = 5.5 34 mA
Output Low Voltage VOL IOL = 8mA, Vcc = 4.5 0.4 V
Output High Voltage V
OH IOH = -4.0mA, Vcc = 4.5 2.4 V
NOTE: DC test conditions: V
IH = VCC -0.3V, VIL = 0.3V
DC CHARACTERISTICS
(VCC
= 5.0V, GND = 0V, TA = -55°C to +125°C)
LOW POWER DATA RETENTION CHARACTERISTICS
(WS256K32L-XXX ONLY)
(T
A
= -55°C to +125°C)
Parameter Symbol Conditions Units
Min Typ Max
Data Retention Supply Voltage V
DR CS ≥ VCC -0.2V 2.0 5.5 V
Data Retention Current I
CCDR3 VCC = 3V 1.0 16 mA