WCMS0808U1X Datasheet, PDF (3/10 Pages) Weida Semiconductor, Inc. – 32K x 8 Static RAM

WCMS0808U1X
AC Test Loads and Waveforms
R1
Vcc
OUTPUT
50 pF
R2
INCLUDING
JIG AND
SCOPE
Equivalent to:
THÉVENIN EQUIVALENT
R_th
OUTPUT
V_th
Vcc
10%
GND
< 5 ns
ALL INPUT PULSES
90%
90%
10%
< 5 ns
Parameters
R1
R2
RTH
VTH
3.3 V
1103
1554
645
1.75V
Unit
KOhms
KOhms
KOhms
Volts
Data Retention Characteristics (Over the Operating Range)
Parameter
Description
Conditions^[4]
Min.
Typ.^[2]
Max.
Unit
V_DR
V_CC for Data Retention
1.4
V
I_CCDR
Data Retention Current
V_CC = 1.6
CE > V_CC – 0.3V,
V_IN > V_CC – 0.3V or V_IN < 0.3V
0.1
6
uA
t_CDR[3]
Chip Deselect to Data
Retention Time
0
ns
t_R[3]
Operation Recovery
Time
t_RC
ns
Data Retention Waveform
DATA RETENTION MODE
V_CC
1.8V
V_DR > 1.4V
1.8V
t_CDR
t_R
CE
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